Hi,

I'm looking for some help/advice about the above. I am about 4 months into my CNC journey so please excuse the lack of electronic knowledge.

I have a fault on my Chinese machine machine. I've diagnosed it as an issue with the Leadshine DMA860A driver for Z axis. I have a new one in transit.

In due course I would like to change out the RichAuto A11 controller and replace with UC300ETH and run it with UCCNC. This is because I have only read good things about the set up and also because I want to add an ATC spindle with linear tool rack once I am confident to take on such a project.

My Questions:

1. Am I correct in thinking that the 5LPT is a Breakout board for the UC300ETH? If so, what are it's disadvantages? I have read that it needs a 5V supply rather than a 24V supply so this is something I will need to tackle. Anything else.

2. I understand that the pins have been arranged in ports. What tyre of connectors can be used for my inputs/outputs?

3. I have read a fair bit of talk about the UB1 and UBB as BB options. Which in your opinion is the strongest option for the hardware below.


3 x stepper motors Nema 34
3 Omron homing switches
Spindle speed control
outputs for ATC
Fixed Z probe following tool changes
Mobile Z probe,

Thank you.