search

tetrabiodistributed / papra

Documentation repo for PAPRa - an open-source hardware (OSHW) Powered Air-Purifying Respirator (PAPR)
https://tetrabiodistributed.github.io/papra
MIT License
4 stars 7 forks source link

Black wall on M12 controller at 2 layers blocks LED #46

Closed mechatroniks-git closed 3 years ago

mechatroniks-git commented 3 years ago

Current limiting resistor for LED swapped out to 100 ohms, LED is driven at 18mA

image

mmroden commented 3 years ago

Not a problem for the pink papr

mmroden commented 3 years ago

not a problem for grey-- blue may not shine through black very well? Maybe spec a brighter LED?

mmroden commented 3 years ago

we do need to spec the specific LED. Don't have a problem with superbrights, because have to go through plastic. Didn't matter with direct exposure with the light pipe, but now that the light pipe is encased in plastic, should use superbrights

mmroden commented 3 years ago

targeting a red LED

mmroden commented 3 years ago

red LEDs are hard to get right now, may have to look at a different color.

mechatroniks-git commented 3 years ago

Blue LED: https://www.we-online.de/katalog/datasheet/150080BS75000.pdf With 100ohm LEDs, we were driving the led at about 18mA, which is about 135mcd. These LEDs have a 140° viewing angle, which is close to the 160° recommended here.

image

mechatroniks-git commented 3 years ago

Recommend using this JLC LED see datasheet

mechatroniks-git commented 3 years ago

image

mmroden commented 3 years ago

Don't print it in black; make sure to document

mmroden commented 3 years ago

Won't fix, don't print in black