Never Got Around To It, Pt. 2

More orphan pictures.

Yard sale chorus pedal, needed the battery snap repaired.

Fixed this Petzl headlamp cord for a friend.

 
Picked up this 80’s Yamaha MIDI sequencer. Some neanderthal had spilled liquid into the buttons so I cleaned them.

A “Baby 10” sequencer that is still sitting on the breadboard 6 months later… An audio breakout box. Useful for troubleshooting and synth experiments. Each column is connected.

This video shows the Baby 10 in action with my hacked Monotrons.

Never Got Around To It, Pt. 1

I have a bunch of half-finished projects, various random vacation pictures, etc. Rather than completely ignoring the blog I thought I would throw them up. I may not even explain them, depending…

Vancouver, Seattle summer vacation:

Neskowin summer vacation II:

Brooks Steam Up:

HP-21 Calculator

Picked up this HP-21 calculator at a yard sale. Plugged in and it doesn’t seem to work and the display is not refreshing quickly. Power adapter is putting out what I think is the correct voltage more or less. Batteries looked ok, but are probably bad. With the batteries out (something you’re not supposed to do) the calculator display is stable but pressing buttons does nothing. Removed two rubber feet and the screws underneath. Careful prying separated the halves. The board interconnectors are pretty neat. So this is a problem (corroded and lifted trace)
And this as well…  More corrosion.
So I’ll have to see about removing all of the corrosion and rebuilding the broken traces. I hope I won’t have to desolder any of the ICs but some of the corrosion runs underneath. Fun!