I am now dreaming about wire. It is entirely possible that I will be able to wire the left-hand jamb in my sleep.

Over the last two weeks I have wired up the right-hand jamb, tested it, and screwed everything back into place. This has been a painful experience, requiring several hours of bending over in an awkward position. I confess to a distinct lack of enthusiasm about doing the whole thing again for the other jamb.

Each stop jamb has two feeds: a 12VDC input to the reed switches, and an 18VDC input to the electromagnets (two on each stop). Activating the lower magnet pushes the stop out, and activates the reed switch, while activating the upper magnet pulls the stop back in and deactivates the reed switch. Activating both magnets at the same time causes the culprit to be placed on the Interpol Most Wanted list. As an extra bonus, this jamb also includes the on/off relay switch (incorporating a pot), a second pot, and a 3-way rotary switch. I’ve wired these up too, although I’m not sure just yet what I will use them for.

The next stage of the process is to install the MIDI hardware which converts between electrical signals and MIDI messages. The reed switch signal pathway is fairly easy – it’s basically the same as for the pistons. On the other hand, the electromagnet switching is a whole new world of exploration. I’ll make a start on it next weekend.