I have four 6V, ~80mA Relays mounted on a Perfboard which are being controlled by the 2N2222 Transistors.
The basic problem is that after mounting everything the diodes can't fit in easily.
Is the Flyback Diode really necessary?
I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...
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