Kit's Machine

[Kitwn]

I really wasn't impressed with the directly wired result, it might work but... see below.

A quick rummage through the goody box showed that I already have everything I need for a proper break-out board in stock. So I decided a day playing with CamBam was called for. The result is a design for a Veroboard interface to connect the AXBB-E to the outside world. By using multiple layers I now have a pretty picture of a design which suits my requirements and might even be of use to others.

If it works out OK I'll start a new thread with further details of how to use Veroboard for those who had a misspent youth chasing girls/boys (your preference), riding motorbikes, drinking beer and playing football instead of a misspent youth chasing girls (my preference), riding motorbikes, drinking beer and messing about with electronics.

The result will have a header for each stepper with four pins for Step, Dir, Enable (all commoned to pin O17) and 0V. Providing +5V instead involves changing one jumper wire. Similar headers connect the proximity sensors with 0V, +12V (or 24V if I ever upgrade the PSU) and sensor output. Headers are also used for power in (one 3-pin connector for 0V, +5v, +12V) and the 8 isolated outputs, including a header for an interlock switch on O1 to prevent accidental starting of the spindle during tool changes. 5 pin headers (3 of) connect to the analog port allowing a single cable to connect to a board with two potentiometers on it or any combination of IN/OUT you require.

The design has the AXBB-E sitting above the Verobard connected to it by a short jumper wire to each of the 40 terminals. Both boards will be fixed to a plastic base board to effectively make a single, large circuit board which will drop into place and have everything plugged in.