RFID reader for 125 kHz with 1602 display on Arduino. This is how our setup at the American International School Vietnam looks like: Connect the RFID kit to the Arduino, as well as the 1602 with the ...

I have a little CNC machine where I'm having some issues with the Z-axis motor (long story) so I thought I'd turn the voltage on it up just a touch. However, I don't want the motor running hot, either ...