I'm not sure if I ever mentioned it anywhere, but one of my price targets for Tetrinsic was £20/ea.
While making this BOM, I determined that it was best to continue the strategy I had for the 11P cable to Tetent by making sure that I can't accidentally solder the LED strip backwards. At the same time, there isn't a 2P FPC. Instead of 2 separate cables, I'm going to use a single 7P cable. This saves both money and simplifies manufacturing. The pinout is below:
- 5V
- LED
- GND
- Force
- GND
- LED
- 5V
Then it's conveniently broken out with this through-hole connector:
At this price, I'm further considering the potential for water resistance. The current limitations at the moment are:
- IP20-rated LED strip
- MR62ZZ bearings might be prone to rusting
In other news, this is how close to the wire everything is fitting:
In other news, I've cobbled together a low-resolution render to finally replace the outdated one:
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