Simple adapter that goes in your Amiga's serial port and gives you MIDI in and out. You can have the last laugh at those Atari ST users! Ha ha ha hyena style. Compatible with weird stuff like phantom-powered thru and merge boxes too! Opto-isolated the way God intended. God is Dave Smith don't you know? He will live to 127 in our hearts.
No warranty! If you blow up your Amiga and MIDI gear it's your own bloody fault!!
All parts are through-hole, the way they bloody well should be!!
Build it on stripboard like this, then shove it in the D-sub headshell. Bonus points if you make it all wobbly like this too:
Resistors and diodes should be installed standing up, with one leg bent over. Oh yeah, my favourite position daddy. Diodes are labelled "A" (anode) and "K" (cathode). Cathode is the end with the stripe. Ceramic capacitors aren't polarized but tantalums are marked with a + symbol. Get this wrong and it will blow up, so exciting!! They use tantalums exclusively in the IRA. The chip must be installed with the pin 1 dot and notched section at the top. Transistors should be installed matching the drawn shape. If it's a round package, whack it with a frying pan until it's a semicircle. Resistors can be installed any way.
If using the BC547, install it backwards because the pinouts on that one are reversed! Bloooody 'ell.
Remember to install the jumper wires under the chip before soldering the chip down! You read this after you installed the chip didn't you? You bell-end!!
Is it a squeeze to get it in the headshell? Pull the bottom row of pins out of the D-sub connector with some pliers to make room. Grab firmly, wriggle and twist. It's exactly like removing your own teeth with pliers. If you have socialised healthcare you know what that's like. They sound like teeth coming out too, it's beautiful.
