This a relay CNC I/O Module designed for use with the 6 Pack Universal CNC Controller. It converts the ESP32s 3.3V signals to 5V. You can use it to supply PWM signals to spindles and lasers. It can also driver external relay drivers.

Features

• 4 5VDC signals.
• 8 Position Plugin Terminal Block with a ground connection for each signal
• LED to indicate when each channel is outputting 5V
  
  Buying assembled from JLCPCB
  
  They will only assemble one side. You should specifiy the top side. You must purchase and solder the 12 pin header on the bottom. It is a standard 0.100" (2.54mm) pitch header. You can buy snap off style many places or the exact part here. LCSC part number C225487
  
  You also need to buy the mating terminal block (Cixi Kefa Elec KF2EDGK-3.5-8P) from LCSC
• 
  Both those parts are on the BOM of the schematic.
  
  PCB Specs
  
  You can use all of the defaults. I typically change the solder mask to black for 6 Pack modules.
  
  Material:FR4
  Layers: 2
  Thickness: 1.6mm
  Copper Weight: 1oz

How to order

Here is a video on how to order.