Help with CNC 3018 from Banggood

[JeanB]

Good Morning Doddy,

Thank you for your reply. Just to inform you I am not very proficient in electronics, so it may be difficult for me to answer your questions.

My CNC works with GRBL and I use the free version of Easel at this time in order to practice……..not much practice has been done at this time.  

My switches are wired as NO and when I check the voltage across the + and - pins, I get ~2 volts and if press the micro switch, I get 0 volts. From all the information I gathered, the bottom row of pins are all to ground???? Before changing my switch wiring to shielded wires, I tried, as suggested on the internet, to add a .47µF capacitor across the micro switch………nothing.

Please find attached a picture of my board. It says: Developower V2.0

Thanks