Dear forumers, I am a "neophyte" in hardware. It mans that my question could be stupid :cold_sweat: I want to connect 48 relays ( 6 eight channel relay modules) on my MEGA. Each relay via its optocoupler needs 30mA. Thus the controller has to deliver 48 x 0.030A = 1.44A. Wat's the solution? …

MEGA 2560 with 48 relays

minaamir March 27, 2018, 11:58pm 11

so how did you connect them (power & mega )as i have the same project and lots of probelm my post link
http://forum.arduino.cc/index.php?topic=537877.0

Topic		Replies	Views
Help understanding relay datasheet? Motors, Mechanics, Power and CNC	14	5565	May 6, 2021
Arduino Mega driving multiple relays (40+) Motors, Mechanics, Power and CNC	4	1364	May 6, 2021
maximum number of relays with ethermega General Guidance	20	10247	May 5, 2021
Advice needed on Limits... General Guidance	11	5287	May 5, 2021
[solved] Arduino Mega to 16 channel relay board General Electronics	13	9360	May 6, 2021