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I will do both lathes the same way so that components can be used interchangeably and in future the mill will also get the same boards. The steppers are connected using GX16 4 pin connectorsįor the lathes I will make a board to connect the sensors and switches. The CPU board will be connected directly to a D-Sub25 connectorįor the lathe I will use D-Sub25 connectors and D-Sub25 parallel port cable(s) I will use a PWM to 10V module for the conversion of PWM to 10V The spindle will be driven by step/dir (servo) for position modes and 10V for speed modes and manual mode, selectable by a control pin (CPU side) and a switch (Lathe side). The main board will do the 5V level converting for the all drivers and sensors by using optocouplers. The main board will do the level converting to the CPU by using FET modules. The main board will have an ESP32 or ESP8266 Wi-Fi board to connect the RX/TX of the CPU board, I prefer WiFi connections. The main board will be powered by 24V and supply the CPU power 3V3 and 5V.

I want CPU boards with no electronics, just wiring CPU pins to a main board. The boards I make are just replacements of wiring. Basically I want to use as little as possible self made electronics.

Do you have pinlayouts and/or pics how you did or will do it on your machine?No it is on my to do list and waits for some other projects to be finished first.

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