This PCB dates from 2017 ..It's a Mark 1
There are modern ones using Teensy 4.0 ..... Mk II
which you can still buy.
This is part two on my build notes.
Part 1 is here:
Links
This Mk I uses the old Teensy 3.2.
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C16 & C21 - are these part of the +5v section of the PCB?
I've soldered c16 in anyway.
C6 --- DNP ??? do not place?
1N5819HW 2 D1, D2 DO-41 schottky rectifiers 511-1N5819
L2 = ferric bead.
These are connected in parallel ... across either side of the PCB.
Thus I used one ferric beath .. the through hole one. (L1)
Caps : 47uF x 2
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C17 - 100n (SMD ceramic)?? I think this is not right.
looks like an electro maybe 33uF ??
Is it C21 in the BOM??
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MPR121 board & headers
It's a Adafruit 12-Key Capacitive Touch Sensor Breakout. This connects to the touch plates of the front panel
Cut the trace on the bottom of Teensy next to VIN pin to separate VIN from VUSB. This prevents
powering the Teensy simultaneously from USB and the eurorack power supply.
Teensy 3.2
The two pots - 10K B ... linear (B103)
Encoder
position the two displays and LEDs
The lower header is tricky.
I had to do some gentle bending of the ends.
you need to keep enough room for the two matrix displays... the legs aren't long
Bend these headers so you can solder them directly to the front panel
This is a side on view
to be continued.....
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