I'm looking to communicate between ~5-10 Arduinos to send commands and data between them. By "Arduino" I mean the ATmega328 programmed using the Arduino programming framework.
Each of the devices would be on the same PCB.
I know I2C and SPI can…
I'm working on a project where I need to control the light of 5 buttons as well as listen when each button is switched on/off by the user. I would furthermore like to provide feedback on an OLED display. It looks like I'm running out of pins. This…
I am quite new to idea of encryption and am trying to use aes-256-ecb encryption. I am using library called "Arduino cryptography". Unfortunately I could not find any tutorial that would explain how to encrypt a json string (and other things…
I'm making a project and i'm trying to send bits from an Arduino to another Arduino with the digital pins. So my setup are 2 Arduino's connected with a jumper.
I connected the grounds and they have both a different power supply.
Now I tried this…
I have a system that uses two Arduino boards. One is used to control several different functions, and the other is dedicated to driving a 45 second countdown display (comprised of two large 7 segment displays.) All this second Arduino needs is a…
I want to transfer float data between two Arduinos. This is what I sent:
0.00
0.00
0.00
0.00
-9.06
-9.80
16.85
16.24
0.00
-16.93
8.13
0.00
0.00
And this is what I received:
0.001****8u
0.001****8u
0.001****8u
0.001****8u
-9.061****8u
…
I know this module is super old but the network I am on still uses GPRS so should work.
This is the module:
I am using the Adafruit example scipt FONAtest. I can connect to GPRS
<--- SHUT OK
---> AT+CGATT=1
<--- OK
--->…
I want to message and call arduino board. I want some type of automation. But where should I get started I don't know I've tried sim900a module which was disappointing experience for me. Then I found out that this module was designed for asian…
I had a thought about making myself an arcade cabinet. I found a nice cheap and sturdy 8 directional arcade joystick online, and now I'm thinking about the possible ways of displaying graphics.
I would like to know how can I send graphical data to a…
There is small board with gyroscope. Controller - Atmega 8a, com-usb chip is CH340G. Board is handmade but not by me so I don't sure is it Arduino clone or not. It works with "ch341ser" driver on the computer and is used in small video game writed…
My fellow programmers,
I'm planning on creating a fan controller for my PC using an Arduino Duemilanove and a generic motor sheild. (Fan controllers are not exactly cheap here and i'd rather spend my money on an SSD than on a fan controller =)
On a…
Assuming I have all the necessary hardware...
I want to develop a system where you type in an email address and the Arduino will send hourly updates on attached sensors to the provided email address.
I can only get this to work if I enter my email…
I wanted to install a 5 LED strip underneath my PC's front panel. I want to send color over PC so it can change when i open different apps, with temperature or etc!
So all I think the best way to do this is to just use Arduino to set the LED…
I have situation where I need to read RFID cards. There is already installed Roger security system, Roger gate control board and two rfid readers in parallel. By default board and RFID readers communicate in RACS(some sort of coded protocol) but at…
Can I connect two ARDUINO UNO circuit boards in serial to increase room for more code and more functionality. For instance I wish to connect six sensors to a board. I need code for all six sensors and there is not enough space on one board. If I…
