Introduction: Multi Task Arduino UNO
Control 4 relay in 8 channel relay module with 4 push button and arduino uno all at the same time locks like multi task it is go around lake of multi task in uno and it is works
*** Important Note : there is an error when Arduino restart or first boot the relay 4 triggered because it is connected to pin 13 so to fix this issue use pin 5 instead of pin 13
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