Questions tagged [arduino]
Arduino is an open-source electronics prototyping platform.
88
questions
7
votes
2
answers
426
views
Arduino library to simplify differential drive robots
I've written code for an Arduino library to abstract away some of the underlying logic in a particular way of moving robots. Code is posted after explanations.
I'm not assuming a high degree of ...
- 400
6
votes
2
answers
511
views
Drift correction for sensor readings using a high-pass filter
An embedded project my team is working on is having issues with sensor drift over time. To solve this, I thought it might work to use a high-pass filter, since the portion of the signal that we care ...
1
vote
1
answer
108
views
Simulate 2-bit half adder with 2-bit inputs on Arduino without using logic gates
You are to simulate a 2-bit half adder. You are not required to implement a real 2-bit half adder using logic gates; you are going to implement a black-box system using the microcontroller that ...
- 13
2
votes
1
answer
110
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Matrix led 7x10 with arduino
Good afternoon, a few days ago I finished a personal project of a 7x10 led matrix programmed with the ATMEGA328p microcontroller. To control the matrix I use 2 74HC595 shift registers in cascade in ...
0
votes
0
answers
254
views
Function block diagram code in CPP to program Arduino
I have created a processing program (Java) with which a programmer can use a GUI to make a program for an Arduino using logic function blocks. It looks like this:
Ofcourse it still needs some work. I ...
- 136
3
votes
0
answers
78
views
Arduino portenta H7 compatible message encryption and decryption
I am looking to build a message encryption/decription method that would allow messages to be encrypted in a timely fashion on board an Arduino Portenta H7, using as much of the onboard hardware ...
- 131
2
votes
2
answers
191
views
State-machine class based upon arduino toolchain
In my quest to search or develop the 'perfect' state machine I have built the following class. With the class you can make a state machine object which comes with timing and transition methods. Being ...
- 136
4
votes
1
answer
451
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Gear Shift Indicator using Hall Effect Sensors & 8x8 LED Display
I wired up a Gear Shift Indicator for my dad's car to display what gear it is currently in, and showing changes with animations (sliding up and down as appropriate, with a few bonus ones for fun at ...
- 43
6
votes
4
answers
430
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Interactive shell for Arduino
Goal
I needed to interact with microcontrollers (ESP8266 & ESP32) via the Serial interface, so I wrote a small interactive shell with the command pattern.
The defined commands can either accept no ...
- 3,960
1
vote
1
answer
93
views
Arduino algorithm
I have 3 push buttons, 3 leds, and 2 relays. When you push button1 once, the led1 turns on and timer is set to 10 sec. When push button1 twice, led2 turns on and timer is set to 20 sec. When push ...
- 125
4
votes
1
answer
94
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Arduino Code for Juggling Machine (Stepper Motors)
I have built a machine that juggles. An Arduino sends signals to stepper motor drivers that drive NEMA 23 size stepper motors.
Video of the machine: https://youtu.be/-9zD_8erkck
Currently, each arm ...
- 195
0
votes
4
answers
230
views
Faster map function
For my job I was tasked with writing a faster version of Arduino's map. The requirements were only use addition and subtraction, since these are cheap operations on our board.
For reference, here is ...
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3
votes
2
answers
175
views
Arduino code and PING))) ultrasonic rangefinder
Context
I've started digging into Arduino and different type of sensors which is fun, but I'm worried that that my coding is too explicit. I've lots of experience for coding corporate programs, though ...
- 387
1
vote
1
answer
60
views
Calling a function once a threshold is met
I'm currently writing an API for our codebase that allows us to use an Arduino Leonardo for our tests. This code is uploaded to the Arduino, and we read through the analog for work.
As stated in the ...
- 9,977
5
votes
0
answers
673
views
Arduino-based darkroom timer
Description
I have created a darkroom timer, which is used for enlarging and developing film.
It has four separate timers, and can toggle mains via a relay to turn on the enlarger for a specified ...
4
votes
0
answers
87
views
Control 30 LED NeoPixel clock with IR color and brightness changing
This code is designed for my 30 LED NeoPixel clock, the reason for not using the ds3231 library is due to the fact that I use codebender to download programs to my Arduino, I wanted some critique on ...
3
votes
0
answers
44
views
esp8266 code for correctness of reset and overall performance [closed]
Please review my code for the performance and correctness, everything works and we get visible wifi access points by opening http://esp8266_ip_addres/hotspots ...
- 830
3
votes
1
answer
986
views
Arduino code for multi button state change detection
I created state change detection for multiple buttons, which is intended to run on my Arduino for a touchpad project. In a nutshell, the code makes sure that the Arduino only reacts to button presses ...
user222535
2
votes
2
answers
856
views
Reading and Storing Integer from Serial Monitor
Description
I wanted to understand how integers can be written and stored inside variables without the use of Serial.parseInt(). I couldn't find any code examples about this. Perhaps this is the ...
- 57
2
votes
1
answer
231
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Arduino Conways Game of Life using FastLED
So I attempted to write Conway's game of life on an Arduino and display using the FastLED library. I use a custom bitset class to manage the game board state. I'm looking for feedback on performance, ...
- 875
1
vote
1
answer
139
views
Traffic Light which revolves around Serial Communication
Assignment description
This is the improved code for a question I've posted earlier. I'd like to receive feedback on an assignment which I'm currently working on. I have to make two traffic lights ...
- 57
2
votes
1
answer
150
views
Feedback on Traffic Light which revolves around Serial Communication
Assignment description
I'd like to receive feedback on an assignment which I'm currently working on. I have to make two traffic lights which allow traffic to run smoothly. I'm using a master Arduino ...
- 57
-1
votes
1
answer
336
views
Interlock of some equipments in electrical power system using simple Arduino Uno code [closed]
I'm trying to implement some logic functions essential to control a small power system consisting of 2 Transformers labeled T1 and T2, 2 Generators (G1 and G2) and a bus tie (BT). I'm not going to ...
- 1
9
votes
1
answer
866
views
Arduino Code for Talking to an RFID Reader
I've written some C++ code, intended to run on an Arduino, the purpose of which is to talk to SparkFun's Simultaneous RFID Reader.
The current situation:
The code runs fine, most of the time.
...
- 441
4
votes
1
answer
78
views
This program reads from serial port, Saves this to a text file, increments file name each time it is run
I want to condense it and get rid of any noob programming errors.
The code works fine but I know it's not as elegant as it could be and I really want to improve. Your advice would be brilliant!
I've ...
- 43
-1
votes
1
answer
75
views
How do I re-write 3 for loops into one function [closed]
I am building a color sorting machine using a Arduino uno and a TCS3200 color sensor. I have a code that is working perfectly fine however I feel like the code could be a bit more clean seeing that I ...
- 1
4
votes
2
answers
93
views
Arduino project to indicate soil moisture using LEDs
I've recently started going through the Head First C book. I'd like to get up to speed in terms of writing good, idiomatic, modern C. I have read the first few chapters of the Modern C book too but ...
- 141
1
vote
1
answer
111
views
Python's eval command in Arduino
I have made an equivalent of Python's "eval" command in Arduino (which in itself is quite a feat) but the part that decodes the output of it is not small enough to fit in another 30 functions since ...
- 113
1
vote
0
answers
421
views
Arduino code to control motor speed based on MPU-6050 sensor
I have been trying to create arduino code where my MPU6050 reads its angle and based on that angle, change the motor speed. For example, 45° is the max motor speed, 22° is roughly half speed, and so ...
- 11
1
vote
1
answer
53
views
Arduino Adafruit Motor Shield v2 wrapper for parsing text into commands
This wrapper library parses text into commands for the Adafruit Motor Shield v2 using the Regexp library. Currently, only the DC motor functions setSpeed and ...
- 369
4
votes
1
answer
428
views
Vertical "moving" text on a LCD-display
Following idea:
You have a LCD-display with 2 rows.
You write the first line of a "text" to the second row. Then you clean the screen.
After a delay you write the first line to ...
- 4,248
-1
votes
1
answer
69
views
An interface for designing Arduino code [closed]
Writing code could be divided into three parts.
1.Interface structure
At this stage programmer should describe all the devices used in his project. Of course, only those of them which Arduino ...
- 781
4
votes
1
answer
466
views
Arduino: Change the color & color intensity of a LED periodically
Prerequisites:
A RGB-LED is attached and wired to the Arduino Uno-board.
Process description:
In the beginning the LED is turned off.
A loop starts and an output-signal is put on the red-part of ...
- 4,248
4
votes
1
answer
70
views
Average readouts from multiple IR sensors with Arduino
I've written an Arduino sketch to continuously read values from multiple analog IR distance sensors, average the last 7 values and output in millimeters. Being pretty new to both Arduino and embedded ...
- 143
5
votes
2
answers
319
views
Read an image with ADNS2610 optical sensor and Arduino Uno
Preliminaries
I have optical sensor ADNS2610 (see datasheet here). There are a few problems which it can be used to solve, but for now let us focus on getting an image from that sensor. This sensor ...
- 781
4
votes
1
answer
738
views
Basic C++ IOT Weather Station
I am making an IOT weather station based on a particle photon that sends data via webhook to one of my other projects. I am very new to c++ and programming in general.
What can I do better with my ...
- 73
2
votes
1
answer
113
views
Display temperature readings, with averaging
I've created a program to read temperature from 4 sensors, get an average and close/open 4 relays according to min/max values. Right now I'm trying to add a 16x2 LCD display to show those temperatures ...
8
votes
2
answers
975
views
Digital clock with many functions
I made a digital clock with the use of an RTC (DS3231) and an LCD (16x2).
Current functions:
Display time
Display date (different formats)
Display temperature (Celsius and Fahrenheit)
Display day ...
2
votes
0
answers
51
views
Generic prologue/epilogue for interrupt driven Atmega328P system
My thinking is that with every application, there are a few fundamentals indicative of all interrupt driven systems. Contrary to popular opinion, assembly programs can be as maintainable as HLL's, ...
- 970
1
vote
0
answers
557
views
Arduino-based photo-gate timer (for physics experiments)
The purpose and operation of this program can be found within the comments.
I would like feedback on my commenting style:
too little?
too much?
too frequent?
(god forbid) not frequent enough?
too ...
- 108
0
votes
0
answers
231
views
Matlab and WidowX robot arm communication and control
For a class, we needed to control the WidowX arm from Trossen Robotics from Matlab and get as real-time of a feedback as possible.
So I came up with a code for the Arbotix Robot-controller which is ...
- 41
2
votes
1
answer
1k
views
Initialize union with array?
I want to create a datastructure for network communication (TCP), where I can build up a byte array from small tagged pieces (like in serialized class). And of course I need a reverse behavior of ...
- 131
2
votes
1
answer
266
views
Arduino Create and send data to Serial Port (Software Serial function)
I have this code written and functioning that will write out the chars in cmd to a serial port for an input of two int values. As the majority of the byte values ...
- 123
4
votes
0
answers
371
views
A GUI program for a Buzzer system using arduino
At the outset, I am a beginner at python, having started out about 2 weeks back.
Aim- To create a GUI program, that can adequately work as a buzzer-management system. A buzzer, like those used in ...
- 315
5
votes
1
answer
2k
views
Simon Says using Arduino UNO
I built a Simon Says game using an Arduino UNO board. This was my first "real" arduino project. I would like to know how to make it better, game mechanics and code efficiency.
...
- 161
5
votes
0
answers
785
views
8-bit AVR delay using TIMER0 (8-bit)
Using an Atmega328P clocked externally @ 16 MHz, this procedure is analogous to delay routines that use instructions to consume clock cycles. The intent of this algorithm is not to advocate any ...
- 970
4
votes
1
answer
764
views
4x4 Matrix Keypad on Arduino UNO
I recently bought a 4x4 keypad.
It is one like this:
http://www.learningaboutelectronics.com/images/4x4-matrix-keypad-pinout.png
Now every code I found on the net was either using a highly overloaded ...
- 171
6
votes
1
answer
96
views
Arduino controller to control the backlighting of a gear selector
Background
The gear selector on a car allows the driver to select which state the transmission should be in.
In the example picture, one of the five letters (P, R, N, D & S) lights up to ...
- 163
1
vote
1
answer
12k
views
Read and write data to/from Serial Port in C#
I am building a console application which will be scheduled in Task Scheduler of Windows to run my code every day at a set hour. Summing up, this application will read and write through serial port. ...
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4
votes
1
answer
419
views
Reading analog moisture signal from Arduino over USB to RPi3 and publishing via paho MQTT
This program is meant to read a moisture sensor attached to an Arduino UNO board via USB to a Raspberry Pi3 which broadcasts it over MQTT.
I am looking for any constructive criticism.
...
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