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geekhack Projects => Making Stuff Together! => Topic started by: HeroXLazer on Fri, 20 January 2017, 18:08:08

Title: Hand wiring LEDs
Post by: HeroXLazer on Fri, 20 January 2017, 18:08:08

I want to use a Teensy 2.0, 38 switches and 38 LEDs. What LEDs (based on current, beccause of the 1000 mah limit on USB) should I use for through switch and how would I wire the LEDs? I want to also use white or gold LEDs.

Title: Re: Hand wiring LEDs
Post by: Cortes on Fri, 20 January 2017, 20:21:36

Uses leds of 3mm or leds 2x3x4mm.

If you are going to use them in a teensy, you should program them in the PWM pins, since using them there, you can program them to consume much less amps.


I am now fighting with the programming led for a teensy in TMK, and I will use 93 leds, and if I can, +44 leds more to illuminate the case.

Title: Re: Hand wiring LEDs
Post by: HeroXLazer on Fri, 20 January 2017, 20:56:24

Should I use a seperate controller or just the Teensy?

Title: Re: Hand wiring LEDs
Post by: Tactile on Fri, 20 January 2017, 21:10:05

You'll need to add a resistor for each LED. The resistor value you choose will determine the current through the LED.

I like 1.8mm leds for switches. They fit nicely in the little recess in the switch housing.