Develop a PCB for the stepper controls and wax temperature

[cheapjack]

• Could we make a PCB that does the temperature control for PCR also?
• We want a modular kit but we dont want a cure-all everywhere approach - what is the balance?
  • We might want a board that lets you plug in an arduino nano or esp8266...
• Might be too hard to integrate into the grbl software - it makes sense you can maybe get a pin to trigger the temperature/flow system.