I will absolutely hate soldering this, but it will provide 15 PWM channels with MOSFETs able to switch 12V/1A each - so enough to power and control 5 LED RGB strips of at least 1m length with a resolution of 10 bit on each channel; the ProMicro nRF52840 will provide control and BLE, and a PCA9865 will take care of the PWM stuff (using those instead of the MCU PWM makes interfacing and enhancing the platform easier - I figure).

#diy #electronics #led #pwm #lpmesh

While at MOSFETs, those little fellows here seem to be quite capable to handle LED strips (SSM3K324R) - again, PWM at 3.3V logic level. They should be able to handle up to 1A safe and sound in this setup, I guess. Why are spec sheets always guesswork. Just a real nightmare to solder these… guess I finally need to figure out where to order PCBs with parts already assembled :/

#diy #mcu #mosfet #led #homecontrol

Finally found a MOSFET with a small footprint and a low price that seems to be able to easily handle PWM for 12V/6W dimmable LED spots when driven by only 3.3V logic level: AOD424.

I use NRF52840 dev boards, as they have a minuscule power consumption of less than 15mA at 3.3V even with Bluetooth on and discoverable. Sure, not much of a difference when the lights are on; but when the lights are off, and you throw 20 of those onto your offgrid net, it suddenly matters!

#diy #ble #homecontrol

Received this little sprocket wheel from Australia last week; it should fix the date setting on my recently acquired Seiko 5606-8110.

The 56 movement series is a great Seiko movement series from the 70s; with the little issue that the date quickset can literally fall apart, as they used a plastic wheel - which reduces wear on the day/date disc, but after 50 years, the gear gives up instead. Wish me and my staking set luck :)

#watchmaking #seiko #vintagewatches #vintage

I just learned about Ronnie’s 153 break, while watching the latest video of the fantastic Break From Life Channel.

I believe we can finally agree that Ronnie is GOAT. I think even for his opponent Ryan Day this must have been a historic achievement, just being present.

Let’s just appreciate what hyperfocus can do for us. And I need to drink water.

#snooker #therocket #ronnie

Audio crackles/clicks in FinalCut with OBS...

This has been pestering me a long time: when cutting videos in FinalCut, sometimes I had the worst crackles in my audio recordings. I always suspected my "cheap" lavalier microphone or my audio setup. Until I noticed that the raw files played fine with VLC.

BUT: it's actually an issue in OBS remuxing, combined with FinalCuts handling of VFR.

Demuxing using Handbrake or ffmpeg instead of the internal OBS - and everything is fine!

#obs #finalcut

When you build an Arduino application with the Bluefruit library - say, for a SuperMicro/Nice!Nano/Feather - and you can't create more than 9 characteristics on your BLE service:

There is a limit of 10 for the UUID128 numbers. You can increase it like this:

// set max number of UUID128
Bluefruit.configUuid128Count(20);

// start Bluefruit
Bluefruit.begin(); // 1 peripheral, 1 central

I sunk four hours into this - thank me later :)

#arduino #adafruit #bluetooth #ble #nrf52

Back in 2021, I build this little thing…

8 rotary encoders, sending midi control events by an Arduino Leonardo (that can pose as a USB MIDI device out of the box), and a small Bitwig driver script.

To show controller position, a shift register per encoder drives seven LEDs. The Bitwig driver can push the logic controller states down to the device :)

It’s actually pretty neat. Still need to do a video and set up a proper code repository and instructions

#midi #diy #diycontroller #bitwig