Reddit reviews MCIGICM 2 Channel DC 5V Relay Module for Arduino UNO R3 DSP ARM PIC AVR STM32 Raspberry Pi with Optocoupler Low Level Trigger Expansion Board
We found 3 Reddit comments about MCIGICM 2 Channel DC 5V Relay Module for Arduino UNO R3 DSP ARM PIC AVR STM32 Raspberry Pi with Optocoupler Low Level Trigger Expansion Board. Here are the top ones, ranked by their Reddit score.
5V 2-Channel Module Relay Board, Driver Current:15-20mA eachIndication LED's for Relay output statusIN: can be low level control relayEquiped with high-current relay, AC250V 10A ; DC30V 10AStandard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
Yea of course! Relays are usually used to handle large voltage and current so 12v 2 amps is nothing. Something like this would be perfect
https://www.amazon.com/gp/aw/d/B072BY3KJF#Ask
There are some tricks to using the rapaberry pi with the relay but its pretty simple
The voltage is right, but we are worried about the current. The gpio pin is designed as a signal, which means very fast switching at nearly no current. The relay however does real work and needs current to do it. The transistor will act as the switch that turns the current on at the response of a signal voltage.
You can buy a relay package made for Arduino and Pi that have the transistor and flyback diode preattached, as well as some other protection and a led. I recommend you do that instead of making it yourself.
Edit: For example: https://www.amazon.com/MCIGICM-Channel-Raspberry-Optocoupler-Expansion/dp/B072BY3KJF This one also includes an optocoupler which is a very common and highly recommended safety feature to prevent any voltage spikes on the mains from getting in to the RPi.
You are going to need to do a bit of research. You will need two additional things: something to read the temperature (one-wire type ones like DS18B20 are easy to use: https://www.amazon.com/SunFounder-DS18B20-Temperature-Arduino-Raspberry/dp/B013GB27HS/ref=sr_1_7 ) and a relay to turn on the heat lamp: https://www.amazon.com/MCIGICM-Channel-Raspberry-Optocoupler-Expansion/dp/B072BY3KJF/
The rest you can find on the internet, how to read the temperature, how to operate the relay, and then put them together.