Arduino Array Of Arrays

Arduino has a max of 2K of RAM. For each structure variable we specify set of values in curly braces. I'm trying to use Rosserial Arduino to process some data from a low cost laser rangefinder. Storing an array of structs should not be an issue, you can store an array of any type. 2] of integer, defines a new array data type called MyTable. 00} Above set of values are used to initialize first element of the array. Introduction. CJMCU 8x8 WS2812 Addressable LED Array with an Arduino. The following figure illustrates a two-dimensional array, a. It outputs Arduino C code (automatically uses the found filename as the array name, so name your files appropriately). Arrays with two or more dimensions are known as multidimensional arrays and can have more than two dimensions. This is due to the Arduino's capabilities. How to Initialize a Multidimensional Array. In this tutorial we will check how to filter arrays using cpplinq. The Byte Array Generated. We do a simple averaging program to show the concept. This can be done like in the example above. There are ways to store a constant array onto the actual memory, but it is quite the workaround. "The Boost Multidimensional Array Library provides a class template for multidimensional arrays, as well as semantically equivalent adaptors for arrays of contiguous data. When doing this in Arduino/C++ you have to specify the length of the array (number of elements) when declaring it. so once the program runs the user enters two value. Offsetting into one giant led array - you set up one CRGB array for all of your leds, then each strip points to a different segment of that giant array. It should also compute the median and mean. For comments, please send me an email , or reach out on Twitter. When my Arduino code is acting up, these are the first things I check. Save this php script in a directory and name it ‘sprite2hex. I have designed the code so that you can insert 1-12 leds but you can edit it so that you can insert 13 or more. I converted all of my String objects into char arrays and wrote my own manipulation functions because I didn't think that strcpy(), strcat(), and the like were versatile enough. Bash Array Declaration. As the number of elements in the array is already known, it’s not a problem. To calculate the total number of elements in a multidimensional array you must multiply each dimension together giving a total count. 432 doubles would equal about 3. Arduino interfacing with DHT11 sensor and LCD. Arduino: Windows simulator of driving matrices of 8x8 LED arrays. You will learn to declare, initialize and access array elements of an array with the help of examples. Bash Array Declaration. For example, the following declaration creates a two-dimensional array of four rows and two columns. An element in an array refers to each value in the array. Technical Article Driving LED Arrays with an Arduino July 11, 2016 by Cezar Chirila All you need to know about LED arrays. If we use a line of code like Serial. Additional function print_cstring_array is used for printing string array contents. An array is a collection of data items, all of the same type, accessed using a common name. The array pins should contain the Arduino analog input pin number for each sensor. It's been a couple of weeks since I've been able to play hands-on with electronics because I've been busy with client work and out-of-town traveling. In short, the array without any brackets will act like a pointer. If you think of a variable as a cup that holds values, you might think of an array as an ice cube tray. max(), but that function returns only the greater of two values. Copy with detailed index positions to copy the two. However, sometimes these structures are not enough to solve certain types of problems, then we need seek solutions in external libraries. We have also seen two methods for determining how many cells of an array hold useful information - storing a count in a separate variable, and marking the end of the data with a special. An array of led arrays - a sort of in between option that gives you one data structure still, but also somewhat separated data as well. Neste tutorial vamos mostrar como declarar arrays unidimensionais em um sketch do Arduino Na próxima lição trataremos dos arrays bidimensionais (matrizes). We could use it for any data type we can find in the C language for Arduino programming. Few keynotes: Arrays have 0 as the first index, not 1. Now, to use an Array, we need to address it by the index number. All of those Serial. Here are my 5 common Arduino programming mistakes, I use to debug non-working code. On the off chance that a program utilizes an articulation as a subscript, at that point the program assesses the articulation to decide the subscript. Arrays You can file this post under "if Rhett doesn't write it down, he will forget". Simple updated examples of arduino serial communications - arduino_multibyte_serial_example. Arrays are useful when dealing with data that needs to be accessed and changed in a systematic way. Arduino 1-12 Blinking Led Array: In this tutorial I will show you how to blink 1-12 leds. Arduino has only one way to create collections as part of the language: arrays. The following figure illustrates a two-dimensional array, a. They can be used to dynamically store information in a volatile table without having it written to a real database in a file on the disk. Arduino creates an extra spot for a special character (called the null termination) that keeps track of where the array ends. Here: We see successful calls to Array. The ULx200xA devices are high-voltage, high-current Darlington transistor arrays. Para efecto de este post nos centraremos en los tipos de datos: "Arrays". In JSON, array values must be of type string, number, object, array, boolean or null. However, because of the generality of C's type system, you can have arrays of arrays, which are almost as good. A copy of the string now exists in the out_num[] array, but only takes up 18 elements of the array, so we still have 22 free char elements in the array. Two-dimensional arrays can be thought of as tables - with a fixed number of rows and columns, and each cell being a single element. Learn more about array, serial communication, arduino, sinewave. For example, the following declaration creates a two-dimensional array of four rows and two columns. In this tutorial we learn how to declare, dimension, and use arrays and array variables with the Arduino. Add strings, arrays and functions to your wonderful sketches. Whilst some programming languages can tell you how many elements are in an array (usually with syntax like array. for example, // initialize all the variables char array[] ={“1”,”2″,”3″,”4″}; String value = “”; int integerValue; void setup(){} void loop(). Arrays are often used to represent multiplication or division. Second, you cannot have "[][]" in the parameter list; all but the last dimension must have a constant dimension in it (the last [] gets converted to a pointer). The following figure illustrates a two-dimensional array, a. If we use a line of code like Serial. The LCD1602 display module is a very popular and inexpensive LCD display. You can call memset on any value that has a memory address (e. Lights multiple LEDs in sequence, then in reverse. The QTR-3A reflectance sensor array is intended as a line sensor, but it can be used as a general-purpose proximity or reflectance sensor. Arrays with two or more dimensions are known as multidimensional arrays and can have more than two dimensions. The sketch below shows the basic use of an array. Equals and Assignment. In some cases you want to “re-initialize” the array (which means, setting every element to zero). Methods preferred by the functional programming paradigm. Most commonly, arrays are presented in rows and columns of dots, cubes, grids or other formats to teach students multiplication. In this tutorial we will check how to filter arrays using cpplinq. while() loop 72 73. 0 in floating point was all zeroes – so clearing a float array with this is fine. In this tutorial will be looking at getting more outputs from less pins, listening to some tunes, saying hooray to arrays, and even build a self-contained data logger. If we use a line of code like Serial. Copy with detailed index positions to copy the two. Using arrays in Google Sheets An array is a table (consisting of rows and columns) of values. Enumerated Arrays A static index array that is created on base of an enumerator list. Dual ScrollPhatHD 17×14 LED Array. Arrays can have more than one dimension. As in previous cases where we needed to store a list of items, we can use an array as our data structure. After some research in the web, found some experiments with TSL1401, TSL202R and TSL201R, many of them without a happy ending. See below a refreshed schema (compared to the previous article). それは言語がどのように機能するのかという理由だけで同じです。そして、はい、 [] インデックス演算子は本当にその左へのポインタを間接参照します、それは値を得るためにそれをしなければなりません。. Lights multiple LEDs in sequence, then in reverse. The 6 in the brackets means that our cargo ship has got six containers where we can put cargo (numbers) in. An array keeps track of multiple pieces of information in linear order, a one-dimensional list. Later you can use ARRAY_SIZE to find how many elements there actually are in the array. Offsetting into one giant led array - you set up one CRGB array for all of your leds, then each strip points to a different segment of that giant array. In this example, mark[0] is the first element. - jshaw/arduino-array. An array is a variable with multiple parts. ) arranged in rows andor columns. It's not a lot. More realistically, a useful program may need to handle many such records. Arduino/C++ (and many other languages) differs quite a bit from Python when it comes arrays. Whenever you need to keep track of an ordered list of items, you'll use an array: a list of songs, a list of each keystroke a user clicks. In this chapter we'll study three workarounds, three ways to implement a. To know more about how to program a TFT display for Arduino, you may read this note. Un Array en Arduino , así como en otros lenguajes de programación, es una colección de variables que se almacenan en posiciones sucesivas, determinadas por índices numéricos. The Arduino library has a sizeof function that can help with this. So here is an example; If this is helpful, please say Thx below. Bei einem teilweise initialisierten eindimensionalen Array führt eine fehlende Größenangabe dazu, dass die Größe des Arrays womöglich nicht ausreichend ist, weil nur so viele Array-Elemente vom Compiler erstellt werden, um die Werte aus der Liste aufzunehmen. Associative arrays are created using the Object function or the brace syntax, while simple arrays are created using the array function or bracket syntax. So, to access the third element, we need to increment our pointer by 2, as follows:. Values and array items are closely linked as the value index of in the static value list is used as item index in the static index array. Arduino interfacing with DHT11 sensor and LCD. Arduino Workshop for Beginners By Sam , updated on 26 March 2019 Welcome to the Arduino Workshop , where you'll be able to follow our guided course which covers everything you'll need to know in order to create your own Arduino projects and become a leveled up maker. In the code below, the asterisk after the datatype char "char*" indicates that this is an array of "pointers". An in-depth introduction to how Arduino arrays and Arduino functions work in C; including an introduction to function pass by value and pass by reference. It’s getting confusing because I see many examples of object arrays such as: LED ledarray[5] = { LED(1), LED(2), … LED(5) } I don’t see why an array of SoftwareSerial only allows the last one to “exist” and not the others before it which appear to be non. A close-up of Jaffa’s huge Christmas tree, 2016, picture by Dafna Mordechai. antenna_array_controller_settings. The first sets. from_array(ints) Then, we can start chaining cpplinq operators by using the >> operator. Arduino IDE; The TFT. Compare arrays in Arduino Sample Code: // Compare arrays int array1[6] = Labels: array arduino, compare arduino, compare array arduino. Currently I send 2 "orders" to Arduino: 'a', which ask the board to collect, analize and store the data and 'b', which sends the arrays. Few keynotes: Arrays have 0 as the first index, not 1. Hi guys, Im having problems storing arrays of data from the serial input of the arduino, I made a program to read the data and print back the array. Multidimensional Arrays (C# Programming Guide) 07/20/2015; 2 minutes to read +3; In this article. Part 8 of Arduino Programming for Beginners. Additional function print_struct_array is used for printing array of struct. toInt() function on it. ‣The array declaration causes the. It doesn't leave much when dealing with char arrays. One of the nice things about arrays is that you can use a loop to manipulate each element. To refer to a particular location or element in the array, we specify the name of the array and the position number of the particular element in the array. The fine print-In order to keep things simple, I assume some background in Arduino and familiarity with working with. Not exactly sure how to implement this in practice however or if there is a more elegant way. So the logic Im following is this: Save the adquire data into an array of defined size (lets say 100 and initialized with zeros) [Cannot understand why in the VI it doesnt work]. For example, if an array hourlyTemperatures has been declared as the function, the call passes array hourlyTemperatures and its size to function modifyArray. Lights multiple LEDs in sequence, then in reverse. T he first item in the array is item 0, the second is item 1, and so forth. First, there is the introduction to arrays and then a program explaining the functionality of simple 1D integer type array. In this tutorial we will check how to filter arrays using cpplinq. This operator is called where. それは言語がどのように機能するのかという理由だけで同じです。そして、はい、 [] インデックス演算子は本当にその左へのポインタを間接参照します、それは値を得るためにそれをしなければなりません。. You will always get 2 (the size of the pointer), not the size of the array. Also, we shall look into some of the operations on arrays like appending, slicing, finding the array length, etc. In our sketches, we create an instance of Hackscribble_Ferro for each FRAM connected to the Arduino:. Hi guys, Im having problems storing arrays of data from the serial input of the arduino, I made a program to read the data and print back the array. Arduino Workshop for Beginners By Sam , updated on 26 March 2019 Welcome to the Arduino Workshop , where you'll be able to follow our guided course which covers everything you'll need to know in order to create your own Arduino projects and become a leveled up maker. For example, the following declaration creates a two-dimensional array of four rows and two columns. The only drawback is increased usage of RAM: we are creating 2D array that allocates 8 bytes per each LED Kit plus few pointers that are usually required to maintain arrays. These methods are static. In C programming, you can pass en entire array to functions. I want to be able to address each one by a number, so the logical solution to that for me was to make the whole thing into an array. So I put together a function that would take an array and set the state of the 74HC595N based on that. This might look wrong since there are only 11 characters in “Hello World”. Nested arrays. The result is the number of elements in the array. •An array variable is similar to a pointer of that type that has been initialized to the address of the first entry of the block. I'm reading data from accelerometer and want to send xyz values in array message. So out comes the trusty 74HC595N. Ein Array ist kein Datentyp, ein Array ist eine Möglichkeit für die Aufzählung von mehreren Werten zu einem Datentyp. In C99, the bounds of an array can now be a run-time expression. You can create a new array with the size of the total of the two arrays. It recognizes 2-dimensional discrete touch events by sensing the intersection between two arrays of contact points: one array along the index fingertip and the other along the thumb tip. Also, note that boolean arrays in embedded program can be horribly inefficient. An array is a special variable, which can hold more than one value at a time. It is created to help simplify the handling of raw c++ arrays. Para efecto de este post nos centraremos en los tipos de datos: "Arrays". What is Arduino Passing Arrays to Functions? To pass an array argument to a function, specify the name of the array without any brackets. Arduino Statistics Library The first library that we will look at is the Statistics library. Happy Coding! Morten Wennevik [C# MVP]. Copy with detailed index positions to copy the two. For instance, an array can store five integers (1919, 1940, 1975, 1976, 1990), the years to date that the Cincinnati Reds won the World Series, rather than defining five separate variables. コミュニティ (5) arrays c++ terminal assignment-operator 配列データが正しい計算結果を出力しない だから私はUniのためにやっている重量計算機の割り当てを持っていて、私の先生は私の問題を解決することができません。. Thank you so much for explaining it well. For more information, see the AutoHotkey Beginner Tutorial or the Objects page. A jagged array is an array of arrays, and therefore its elements are reference types and are initialized to null. For example, I might declare "line0" and "line1" each with 21 characters. Hi guys, Im having problems storing arrays of data from the serial input of the arduino, I made a program to read the data and print back the array. How to Initialize a Multidimensional Array. It's a perfect solution for a beginner which I assume Doongas is. For example, if pins is {0, 1, 7}, sensor 1 is on analog input 0, sensor 2 is on analog input 1, and sensor 3 is on analog input 7. There are two types of strings in Arduino programming: 1) Arrays of characters which are the same as the strings used in C programming 2) The Arduino String which lets us use a string object in a sketch. sort_structs_example() uses struct_cmp_by_price() and struct_cmp_by_product() as compar callbacks. The Arduino For Loop. We have also seen two methods for determining how many cells of an array hold useful information - storing a count in a separate variable, and marking the end of the data with a special. But I can't figur. My project uses various states and I didn't want to have to shift out or set bitmasks repeatedly throughout my code. The following code shows the CharToFloat function that turns the split Character Array into a float. For example, if an array hourlyTemperatures has been declared as the function, the call passes array hourlyTemperatures and its size to function modifyArray. Arduino - Array de bits Como sabemos arrays são estruturas de dados utilizados para armazenar dados de um mesmo tipo em sequência. The iteration method works but it is waste of energy so here is the code you need. "The Boost Multidimensional Array Library provides a class template for multidimensional arrays, as well as semantically equivalent adaptors for arrays of contiguous data. An array of led arrays - a sort of in between option that gives you one data structure still, but also somewhat separated data as well. As what was done in the previous topic, the measured temperature and humidity values are displayed on 1602 LCD screen. The Arduino For Loop. Arduino: Windows simulator of driving matrices of 8x8 LED arrays. Arduino 1-12 Blinking Led Array: In this tutorial I will show you how to blink 1-12 leds. Lights multiple LEDs in sequence, then in reverse. A two-dimensional array is simply an array of arrays. An array is a collection of variables that are accessed with an index number. sort method by default uses an ascending sort, meaning elements are ordered from low to high. On the off chance that a program utilizes an articulation as a subscript, at that point the program assesses the articulation to decide the subscript. These methods are static. If you think of a variable as a cup that holds values, you might think of an array as an ice cube tray. In computer programming, a variable-length array (VLA), also called variable-sized, runtime-sized, is an array data structure whose length is determined at run time (instead of at compile time). The iteration method works but it is waste of energy so here is the code you need. The idea is to store multiple items of the same type together. More specifically, we'll be using single-dimension arrays in our code. Arduino IDE; The TFT. First, this is an array of arrays of references. The other way to think of three-dee[] is as an array of arrays of arrays. You could create a string from your characters and run the. An array is a collection of items stored at contiguous memory locations. The JavaScript Array class is a global object that is used in the construction of arrays; which are high-level, list-like objects. Suppose we have 3 Array Elements then we have to initialize each array element individually and all individual sets are combined to form single set. So out comes the trusty 74HC595N. This tutorial targets people who are beginners. Array types are reference types derived from the abstract base type Array. In this example, mark[0] is the first element. How to Initialize a Multidimensional Array. Your code can then divide the number of bytes for the variable type into the number of bytes in the array. Getting string value in character array is useful when you want to break single string into parts or get part of string. while() loop 73 Condition 74. Suppose you declared an array mark as above. This blog post is about learning how to use arrays with Arduino. Searching Through Arrays Another common way you will see programmers poking around inside arrays is with "for" loops. ” In order for those arrays to work properly, they get loaded into the ATmega’s RAM before your code starts running. The Statistic library calculates the average and stdev of a set of data (floats). Arduino IDE; The TFT. It should be noted that the function splits the float into a forward half and a back half. You can call memset on any value that has a memory address (e. The index starts at 0, and will always therefore go up to 1 less than the total number of things inside it ( so with 9 items, the last one would have an index of 8 ). What is Arduino Passing Arrays to Functions? To pass an array argument to a function, specify the name of the array without any brackets. Arduino creates an extra spot for a special character (called the null termination) that keeps track of where the array ends. Introducing the F() Macro. A uno's chip has 2kB of ram. Using the Arduino, I can't make the amplifier thing or have a negative voltage input. Imagine if you have a very large array. Unlike the For Loop tutorial, where the pins have to be contiguous, here the pins can be in any random order. print() statements are composed of c-style strings. to refer to a particular location or element in the array, we specify the name of the array and the position number of the particular element in the array. Hi can someone help me with this? Do you know how to compare two arrays, one is coming from the read serial funtion and another is a constant, both have 12 byte and I want to campare it and get a bit if both are equal, thanks for the help. All of those Serial. The code In our code, we will compare the use of a variable length array versus the dynamic allocation of an array on the heap, using a malloc call. An array is a special variable, which can hold more than one value at a time. A jagged array is an array of arrays, and therefore its elements are reference types and are initialized to null. When using multi dimensional arrays you need to consider what information you need. An array named «nums» is created. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. Ascending: The Arrays. This sensor offers digital output (I 2 C) for thermal presence, direction, and temperature values. I had a char array of exactly 8 chars ending with /0: char a[] = "///////0";. For example in the case of a 6x6 matrix, there are 15 4x4 submatrices. Fast, Efficient Data Storage on an Arduino. We'll use two-dimensional arrays as examples in this section, although the techniques can be extended to three or more dimensions. cc, but examples are lacking. If you are using a char, unsigned char, or byte array there is a way to accomplish the copy without knowing the length of the data. Similarly –. "The Boost Multidimensional Array Library provides a class template for multidimensional arrays, as well as semantically equivalent adaptors for arrays of contiguous data. In C and C++, arrays are zero based, that is the first element in an array is 0 and the last element in an array should be N-1. Try &stringX[0], a pointer to the first element of stringX, which is what you want, anyway. Arrays are groups of the same kind of data that are placed consecutively in memory. From your arduino, you send every cell in your array in certain order. To pass a variable size array to a function you need to pass the array, and its size. Note: > Zoom in and Out with the mouse wheel. The letters in double quotes are 1 dimension char arrays themselves, that's what C strings are. Arduino creates an extra spot for a special character (called the null termination) that keeps track of where the array ends. The Byte Array Generated. Lights multiple LEDs in sequence, then in reverse. Part 17 of the Arduino Programming Course. The array contains three rows and four columns, so it is a 3-by-4 array. What is Arduino Passing Arrays to Functions? To pass an array argument to a function, specify the name of the array without any brackets. r/arduino: A place for all things Arduino! The reason I was using char arrays is because the real code I am working on for my project receives text messages and reads them in one character at a time and puts them into a char array. In this tutorial we will check how to filter arrays using cpplinq. An array is a collection of variables that are accessed with an index number. In the preceding code, myPointer holds the value of the first element of our array. The strcpy() function is used to copy the str[] string to the out_num[] array. The driver board design is based on an Arduino Mega and can control 64 channels with a square wave of up to 17 Vpp and ?/5 phase resolution. To me this meant storing a four byte long in four bytes. Arrays in the C++ programming language Arduino sketches are written in can be complicated, but using simple arrays is relatively straightforward. Such arrays are called variable length arrays or VLAs for short. Your code can then divide the number of bytes for the variable type into the number of bytes in the array. numSensors must be no greater. However, sometimes these structures are not enough to solve certain types of problems, then we need seek solutions in external libraries. If one input is a character array with multiple rows, and the other input is either a scalar cell or a string scalar, then tf is an n-by-1 array, where n is the number of rows in the character array. In general, an array with m rows and n columns is called an m-by-n array. The array contains three rows and four columns, so it is a 3-by-4 array. A one-dimensional array (or array) is a data structure that stores a sequence of (references to) objects. Last but not least, I have to remove undefined values from the array with _. I have designed the code so that you can insert 1-12 leds but you can edit it so that you can insert 13 or more. An array stores multiple values of the same type – the element type; The element type can be a primitive type or an object reference; Therefore, we can create an array of integers, an array of characters, an array of String objects, an array of Coin objects, etc. Arrays in the C++ programming language Arduino sketches are written in can be complicated, but using simple arrays is relatively straightforward. Because strings themselves are arrays, this is actually an example of a two-dimensional array. are the same). I was a bit dismayed to find out that Flash had no simple built-in way of getting the maximum value from an array. An other way to create an array: int nums[] = {10, 78, 45, 67, 38, 14};. char sentences[3]; Is an array of three characters. Offsetting into one giant led array - you set up one CRGB array for all of your leds, then each strip points to a different segment of that giant array. Dual ScrollPhatHD 17×14 LED Array. The goal of this course is to give you, step by step, the Arduino programming foundation that you need, along with a ton of practice, so you will be more confident to create much more complex and nice Arduino programs in the future. Grid-EYE® Infrared Array Sensor Panasonic Grid-EYE® is an 8x8 (64) pixel infrared array sensor. You can use these arrays with programs for embedded systems with microcontrollers to output graphics on monochromatic LCD's or thermal printers (like Arduino with the Adafruit mini printer , which I needed this for). There are two types of strings in Arduino programming: 1) Arrays of characters which are the same as the strings used in C programming 2) The Arduino String which lets us use a string object in a sketch. Note that the array length (or the number of items that we plan to store in the array) is ballCount. Methods on the array prototype and how to use them. Arrays An array is an ordered collection of variables which are of the same type. This comes quite handy in C++. Sending strings/char arrays to arduino // first we need to know how long the string was in order to prepare an array big enough to hold it. Sort an array of Characters. As sizeof returns its information relative to a single dimension. In this tutorial we will focus on learning the working of 1D array and I tried to be brief as well as precise with the description of every little concept. In short, the array without any brackets will act like a pointer. Each Flash type provides a mechanism for determining its size: String and String Array: size_t length(); Array: size_t count(); Table: size_t rows(); size_t cols(); Access. Much better to use integers as bit arrays if possible (if you stick with 8x8 arrays, you can use chars/uint8_t). Arduino Convert Long to Char Array and Back I wanted to log data from an Arduino to an SD Card in the most space and time efficient manner possible. When comparing arrays to variables, both can be. I assume an array of objects cannot be empty but has to be filled when created. Core Electronics is your home in Australia for: Arduino https://core-electronics. 2] of integer, defines a new array data type called MyTable. We do a simple averaging program to show the concept. Second, we don't use the ampersand! It turns out that when we pass arrays into functions, the compiler automatically converts the array into a pointer to the first element of the array. An array is a collection of variables that are accessed with an index number. It is created to help simplify the handling of raw c++ arrays. In JSON, array values must be of type string, number, object, array, boolean or null. Here we will explore using the versatile ULN2003A Darlington Transistor array with a typical micro-controller such as Arduino. You know you have a memory problem when "The memory is the first thing to go. Searching Through Arrays Another common way you will see programmers poking around inside arrays is with "for" loops. In general, an array with m rows and n columns is called an m-by-n array. length), Arduino does not make it so simple (it involves a bit more maths). Arrays might store vertex data for complex shapes, recent keystrokes from the keyboard, or data read from a file. If you're "trying to allocate an array 64 bytes in size", you may consider uint8_t Buffer[64]; instead of uint8_t *Buffer[64]; (the latter is an array of 64 pointers to byte) After doing this, you will have no need in malloc as your structure with a 64 bytes array inside is. Multi-Dimensional Arrays with Arduino (aka Matrix) I don't know if you are into Zen or not - I don't know Zen from jack. Learn more about array, serial communication, arduino, sinewave.