ELY07V552J Viewfinder CRT
Found these little gems in a local surplus store. This is my journey to making these display work.
Tektronix 2755 repair
Picked up a Textronix 2755 at a flea market recently for a "hefty" $60 USD. It looked to be in reasonable condition (nothing that can't be reasonably attributed to a couple of decades of service). Absolute worse case there might be some savagable RF components and for the price, I'm willing to ignore the big dot sticker on the front.
Accessing all my phone's cameras
The stock app is the only one that can really switch to the wide angle and the macro cameras but is misses a few features, like manual focus, macro video and viewing the fourth camera. There are a few apps out there for manual focus but none could access the macro or wide angle cameras.
Stick to TIG welder
TIG welders on the online stores are ~ 2x the price of a stick welder. How hard can it be to convert?
Encoder motor driver
Using the cheap DC motors, with gear box and a quad encoder, in place of stepper motors. This has the benefits of being closed looped.
One thing lead to another. I found an intersting SMD transformer on mouser. Built a HV (not very HV, like 600V HV) power supply from it. And stuck a thyristor between HV caps and a small coil. Next thing I knew, I had everything I needed to try out some EM fault injection
Simple IR TX
Needed a quick wireless comms with minimal component and code.