Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.
-1
votes
0answers
35 views
Multiple baud rates on Arduino [on hold]
I am using the Arduino Uno. I tried changing the baud rate mid-program as my sketch below shows. The sketches work fine separately, but not when combined into the sketch below.
...
0
votes
2answers
86 views
How can I write an analog voltage on arduino?
My question reference's a problem I'm having with my eletronic solution. I'm using a CI LM3915N-1 to build a bargraph circuit, where I need to turn on a few LED's depending the voltage that my CI ...
3
votes
4answers
147 views
Using an arduino in below-freezing temperatures
I intend to use an Arduino in an environment with highly variable weather. It will be an outdoor project staying outside during the entire year with temperatures ranging from a maximum high of ...
0
votes
2answers
66 views
Motor speed control using arduino and quadrature encoders
I am trying to get precise control over the speed of rover 5 based robot. It has four PWM controlled motors and 4 Optical Quadrature Encoders. I am using 4-channel motor controller with rover 5 ...
2
votes
0answers
57 views
Strange stepper motor behavior- moves too far
I have 3 CD drive stepper motors on a 9V 2A power supply, and they are being driven with EasyDrivers. I am using an Arduino with grbl to control the drivers. The current for the motors is at the ...
2
votes
2answers
98 views
How can I get this to not read an arduino digital input?
I have been working on this for a while. It is a small part of a much bigger code.
I have a digital input pin connected to a on/off switch and another input pin connected to a momentary push button. ...
0
votes
0answers
29 views
Arduino project using GSM, GPS and RFID [on hold]
This is my first Arduino project, so please be gentle. I want to integrate a GPS to get the device coordinates, a RFID reader to identify the person close to the device and a GSM to send all this ...
0
votes
3answers
64 views
How to transfer from arduino uno to strip board (rgb mood light) [on hold]
I am new to circuits and just got a arduino uno. made this simple mood light with it for a project im working on.
I used this for a start and just want to know what I need to do to transfer this to ...
0
votes
0answers
73 views
Control audio volume with a micro controller
I have an old amp that has no remote control. I already played with arduino IR library and it was pretty easy in using a IR module.
I want to control the input level before it goes to the amp input, ...
0
votes
1answer
70 views
Measure 0-10V using Arduino
A thermocouple amplifier outputs a voltage range of 1.2V to 8.8V for the temperature range -260C till 1380C when using a K-type ...
0
votes
1answer
49 views
How to run Arduino-on-breadboard at 3.3V and still have USB communication to PC
I have built an Arduino on a breadboard (using an ATmega328PU) with an 5V FTDI USB controller.
I want to be able to run the Arduino at 3.3V instead of 5V.
It works completely at 5V supplied by the ...
1
vote
2answers
84 views
Can ATmega88 be run at 3.3V with internal clock?
I want to use a few ATmega88s with Arduino bootloaders to act as I2C stepper drivers and temperature controllers that will interface with a Raspberry Pi. The thing is just that it seems the RPi ...
8
votes
5answers
204 views
Sensor for ultralow (to -85°C) freezer monitor
I am planning to build a series of Arduino-controlled temperature-reporting units for a room full of "Ultracold" -80°C freezers. (I ultimately want to convert the signal to a serial stream that will ...
0
votes
2answers
70 views
Do I have a bad relay module?
I'm aware that there have been many questions about this series of relays, but I've read them and still can't get this working.
I have this version, with 4 relays.
I'm currently wiring:
5v Arduino ...
1
vote
2answers
84 views
Data lost writing on Arduino serial port. Overflow?
I have an Arduino connected to a linux box (a Raspberry Pi). I'm reading an analog pin and writing it out with Serial.println() together with the value of ...
