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Hi Sam,

Yes, I thought maybe you'd simply overlooked my query. I've sort of set myself a goal to make a PCB to suit this unit. I'd hoped to adapt one of the PCB layouts posted by other builders...

Hi Terry,

Yes, I'd noted Khalid's layout as a useful basis for adaptation to my keyboard. Your diagrams and explanation of 4-terminal key switch operation in that layout certainly helps to clear...

Hi Steve,

Only up to a point. In terms of literal hardwiring it's easy enough — two sets of 4 wires arranged at right angles, one set being being soldered to the 'row' pins, the other set to the...

Hi Sam,

I've now obtained the keypad type you used and I certainly like the tactile feel and the ease with which I'll be able to apply lettering — see pics below:
...

Hi Sam,

Nice job. I especially like your keypad. How did you go about making that up?

Joe

Allan,

Are you sure you've quoted the type number correctly? This project is designed for the 18F452 or the 18F4520. The 18F4525 appears to have significantly different specs e.g 48K program...

Well, I'm no expert on PIC programming, Kwackers' project being the first occasion I've used a PIC processor (I've some past experience with burning old-style EPROMs and EEPROMs). I used a bog...

Hi Chuck,

Lucas posted the final version of his PCB layout in Post #346 which included the 'Silk' as an attachment. This, I believe, is where the 'C8' capacitor first appeared. Lucas did say in...

The very latest firmware is, I believe 'Rotary2.12c.zip' linked at Post#419 (Page 35). This version is thought to work for both the 18F452 and the 18F4520. However, if you've already burned v.2.12 to...

Hi,

I had the same trouble producing a usable PCB based on Steve's design using toner transfer methods. The close ground plane and fine traces defeated me.

However, member Lucas produced an...

Thanks Steve. That's given me a starting point.

Joe

Hi,

Can I raise the vexed question of suitable drives/stepper motors again, please?

I imagine this excellent project appeals to a lot of people like me who've no intention of getting into...

Hard to say without a picture. Have a look here:

http://www.lathes.co.uk/colchester/index.html

Don't know this mill or the VFD but some points you should note:

1. This inverter outputs a 230V 3-phase supply. You'll need to check that the mill motor is "dual-voltage" i.e. it can be...