deskthority

Hello, this is a follow up to a string of posts from about a year ago: https://deskthority.net/post240050.html#p240050.

I was successfully able to get everything working as recommended with a transistor and LED+470ohm resistors, however I keep blowing through transistors. I've tried both NTE123A ...

Ok, so instead of the Femtobuck and external power supply, lets say I get a 2N2222 transistor, hook that up to a PWM pin on the Teensy then wire all the leds+470 ohm resistors in parallel. Should this setup work?

How would I go about controlling this setup using this firmware?

My concern with connecting straight to the Teensy was power draw.

Leds could draw:
.020A * 3.6V * 105 = 7.56W
.020A * 3.3V * 105 = 6.93W
.020A * 3.0V * 105 = 6.3W
.005A * 3.3V * 105 = 1.73W
.005A * 3.0V * 105 = 1.575W
.005A * 2.7V * 105 = 1.4175W

USB is spec'd at .5A * 5V = 2.5W.

I would love to ...

Alright geniuses, my keyboard is fully functional, so on to the next part of my project: backlighting.

I purchased white LEDs from maxkeyboard ( http://www.maxkeyboard.com/max-keyboard-white-3mm-flangeless-replacement-led-for-backlit-mechanical-keyboard-110-pcs.html ) and contacted their customer ...

Sorry, the code I supplied was a copy/paste example, not my actual code. I have edited my edit with my actual working code.

Independent of what is supposed to occur, with "(PINC&(1<<3) ? 0 : (1<<15))" the rest of the keys in the row would fire. With "(PINC&(1<<3) ? 0 : (1UL<<15))" they would not. I ...

Hello Gurus - I'm having an issue with this firmware and I am hoping someone can point me in the right direction.

For one of my columns, when I press the top key, the rest of the keys in that column also fire.
eg, Press F5: F5/6/y/g/b all fire

I am also having a similar problem another column, but ...

I'm thinking this: http://www.keyboard-layout-editor.com/#/layouts/6fb240ca6d2c3b095cd5e08408ba54ca

I don't intend to have status lights at all. Years of having wireless keyboards has conditioned me to not use the indicators. I can type 3 keys to discover the CapsLock is on. Thinking about it, I ...

Layout.png I also am in the process of designing a programmer's keyboard, though with a couple fewer keys than yours...

I don't hate the shift key, so I don't need all the special characters exploded out. I also rarely use anything other than decimal, so the additional hex keys are of no interest ...

Oh great and wise Keyboard Oracle, I am in search of a unicorn!

In the early aughts, Microsoft introduced a key layout with a reorganized Home/End/Page Up/Page Down/Delete key area. By all accounts it was a colossal failure and now is nearly impossible to find. I happen to be the sole person on ...