This a relay CNC I/O Module designed for use with the 6 Pack Universal CNC Controller (standard and external version). It can be used to turn on/off spindles, vacuums, coolant devices, control valves, etc.

Features

• Contact rating: 10A 30VDC, 10A 250VAC, 10A 125VAC. Datasheet is here.
• 3 Position Plugin Terminal Block (Common, N.C. & N.O.)
• LED to indicate when coil is energized

FluidNC Configurations.

It can be controlled by any digital output pin. This can be for a relay spindle, coolant control, user ouptput, etc. It uses the first I/O pin (next to the 5V) on the module socket.

Here are some relay spindle examples

6-Pack socket #3, external version socket #1

relay:
  output_pin: gpio.26
  enable_pin: NO_PIN
  direction_pin: NO_PIN
  disable_with_s0: false
  s0_with_disable: true
  spinup_ms: 0
  spindown_ms: 0
  tool_num: 100
  speed_map: 0=0.000% 0=100.000% 1=100%

6-Pack socket #4 , external version socket #2

relay:
  output_pin: gpio.14
  enable_pin: NO_PIN
  direction_pin: NO_PIN
  disable_with_s0: false
  s0_with_disable: true
  spinup_ms: 0
  spindown_ms: 0
  tool_num: 100
  speed_map: 0=0.000% 0=100.000% 1=100%

6-Pack socket #5, external version socket #3

relay:
  output_pin: i2so.24
  enable_pin: NO_PIN
  direction_pin: NO_PIN
  disable_with_s0: false
  s0_with_disable: true
  spinup_ms: 0
  spindown_ms: 0
  tool_num: 100
  speed_map: 0=0.000% 0=100.000% 1=100%

Coolant Example

coolant:
  flood_pin: gpio.26
  mist_pin: NO_PIN
  delay_ms: 0

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 here. LCSC part number C504905

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.