I managed to fix the issues in the last video then it was on to the next set of problems. I've been making slow progress programming the code for the microcontroller but I've probably put 20+ hours into it already and there is still so much to sort out. I've been holding off as I like to do things myself, but now I am at the point of exploring the options for PLC control. Basically these take a range of digital and analog inputs and output some digital and analog signals to control automated machinery. They use ladder logic to control them and should be ideal for this application. Now there are plenty of Mitsubishi clones (using the FX3U48MT system) on Amazon etc, and some 24 channel in / out versions are in the £70-£80 range:
https://www.amazon.co.uk/Industrial-...zcF9tdGY&psc=1

This example looks like enough inputs, outputs, high pulse rate (up to 100kHz), and can be programmed using software over the RS485 port. The problem is the software to programme them only seems to be the original Mitsubishi versions and this is £600 upwards. Does anyone have any experience of using PLCs to drive servos and what low cost software is available to the hobbiest? Now I know these units have memory limitations and limited feature support Vs the originals but surely they can do the basics? All thoughts and experiences welcome . . .