Q: where can I buy a Proteus?
A: As of Feb 2022 please DM Andrey on the forum, Proteus is in stock just not listed on eBay!
With fabrication files for Proteus you can get a 80% assembled unit from JLCPCB. QTY 2 price XXX, QTY 10 price YYY. While the most complicated main chip is soldered you would still solder a few dozens of surface mount components.
Forum thread here
Source & production files here
TE Ampseal Connectors¶
Ampseal application specification (instruction manual): This document includes how to crimp connectors, how to install them in to headers, and how to remove pins from a header.
We have a plastic CNCed case here
McM 90417A118 black oxide, #4 3/8" long screws recommended
Most boards will need a debug header installed if you want to attach a debugger (not used for normal users). The recommended connector is Samtec PN
FTSH-105-01-F-DV-007-K. When soldering the connector, the keying notch goes towards the center of the board, nearer to the 23p center connector.
Any debugger compatible with the standard 10-pin Cortex Debug Header should work, though the STLINK-V3 Mini is recommmended. It's available for $10-12 US from normal distributors like Mouser/Digikey. A ribbon cable is included so the connector and programmer are all that's required to debug on Proteus.
20A Power GND
2A Low side, High side