deskthority

The Kalih Click Bar is on another level of clicky.

Kalih's switches have increased a ton in quality now, and the click bar is so nice.

I really like GMK Terminal.

I really like the Kalih Speed Bronze switches.

The 3733 is not compatible to the 3731/3732. It uses slightly different registers to store the led enable and PWM values. So there are at last some changes needed for the code writing the PWM values to the 3733. AFAIK there is until now no firmware supporting the 3733. I started to writing some ...

I'm making a custom RGB keyboard, and I'm very confused on the firmware. I'm going to use QMK. It's going to use the IS31FL3733. How would I implement the driver into the firmware? I haven't ever touched QMK, so I'm completely inexperienced. I'm using the ATMEGA32U4.

For my RGB keyboard, I need a 12 pin connector to connect two sides. Do you guys know of any connectors that would be the best at this? I was wondering if there is anything smaller than USB C that would work for me?

For my PCB with RGB LED support, I plan to use throug-hole-LEDs like those available from Zeal PC (https://zealpc.net/collections/accessories/products/4-pin-rgb-led-through-hole). They have 4 pins, a common anode, and a cathode for each color. That is the same pinout as for the smd RGB LED from the ...

Looks like LEDs with common anode. Should be no problem to wire them as in the documentation. Just think of the one VCC pin as three pins.

You can have a look at this schema: https://github.com/anorak-47/keyboard_pbc/tree/master/anorak_91tkl
It uses an 31FL3733 and 4-pin LEDs. Beware, it is ...

Thank you very, very much.

So, I want to use a LED driver with RGB LEDs, and I want to use SMD RGB LEDs that only have four pins. They have a R pin, a G pin, a B pin, and a VCC pin. The driver I'm going to use uses Charlieplexing, and I'm confused on how to Charlieplex with single pins. I figured out to do it if you have two ...

pomk wrote: Yes. What are you interested in? I can send the schematic to you if you wish to use the same MCU in some design of yours.

I'm thinking about using this in my RGB keyboard build instead of the ATMEGA32U4.

Is this going to be open sourced or not?

OK. I saw on Geekhack that you just want to backlit 40 keys. What kind of LEDs have you found? They must fit inside or below (SMD) the switch you want to use.
Most full-spectrum (...) LEDs are RGB, not RGBW. Red, green and blue together makes white. That would be 40×3 = 120 LEDs.

LEDs are usually ...

It seems that you are correct on this. I thought that the kinetis SDK would allow for a 'battery charging' device to be developed regardless of the MCU used, but it seems that that specific service is not allowed for MKL2X devices. The USB2.0 battery charging service would have allowed for 1,5A ...

Yes, there are many controllers. You might want to check out this thread:
https://deskthority.net/workshop-f7/can-we-design-the-teensy-alternative-for-keyboards-t13662.html

You don't necessarily need USB 3.0 for the higher current limit. You could use two USB 2.0 connections or a device that ...

What other MCUs are good alternatives to the ATMEGA32U4? I want to build a custom RGBW PCB with USB C 3.0 or 3.1. I got the RGBW part almost down, but I need to know what MCUs will work with USB 3.0 or 3.1, I need it for the higher power through USB from 500ma to 900ma. Which controller are the best ...

Okay, thanks. USB-A wasn't a mistake. I wanted to use USB-C, but it's confusing to even do 2.0 on a controller. I'll try to do USB-C 2.0. Do you have any recommendations on which model to use?

DMA wrote: Also you are much better off the atmega as a family. It's not even "yesterday", it's "eons past", things are done much i much easier way nowadays.

What do you mean? Should I use a different "brain"?

I want to make a USB-A ATMEGA32U4 controller, and was wondering what the schematic would be compared to a normal keyboard schematic. How would I do that?

Hey, if I want to design a PCB like this with the ATMEGA32U4, what capacitors/resistors/etc., do I need? I also want to use a USB-A port, so how would the schematic look like compared to a normal keyboard PCB using an ATMEGA32U4?

matt3o wrote: yes, if you want 1-to-1 control over the LEDs you need an additional controller (possibly even 2 of them) speaking I2C with the IC. I believe you should start with something simpler

Okay, I'll just do all of them at once. What else do I need except for resistors and LEDs? Do I need a transistor?

I have two simple KLE files for now, and will design some CAD files soon, but I was wondering if I could do two buttons and a scroll on the left half of the keyboard instead of thumb clusters, and I want a trackball on the right half. I do want to hand wire (for now...), and I was wondering how I ...

BLANK

I'm still confused. I am wondering if I need a separate controller if I want each LED to be controllable. Can anyone give me a simple explanation. I am so sorry for bugging all of you guys.

Have a look at these:

https://deskthority.net/workshop-f7/tmk-firmware-with-leds-help-t15694.html
https://deskthority.net/workshop-f7/hand-wiring-switches-and-led-backlighting-questions-t7615.html
https://deskthority.net/workshop-f7/minimal-animal-complete-build-log-t7779.html#p157190
I'm still ...

You probably choose the colour and formfactor yourself, after that choose an efficient one, so you don't need too much power to drive them.

As for wiring: a PWM output will drive a mosfet, through which you can supply enough current for all the leds. You will probably pair each led with a resistor ...

he used wrong nomenclature but the concept if perfectly understandable. why attack the poor guy :D

The limit on a standard USB is 500mA, which is really low for a full backlit keyboard, you should check how to PWM-drive them. I don't feel you need a dedicated controller if you don't want 1:1 ...

LOL please do your homework HeroXLaser.

There is no 1000mAh limit on USB. Where did you get this? mAh is a CAPACITY and not a CURRENT.

The number 1000mA is super random, too! If there is any universal value for USB, it is 500mA!
Only USB 3.0 and up supports higher current draw (900mA, 1.5A or ...

I want to use a Teensy 2.0, 38 switches and 38 LEDs. What LEDs (based on current, beccause of the 500 ma 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. Also should I use a separate controller>