Reddit:Electronics

I am stumped by this potentiometer manufacturer. Internet searches reveal no information. This dual concentric stack has a manufacturers label on the back C.C.M. & Co. Ltd. There is a type CG. indicated. The middle wiper is switchable. The two two pots are 50K and 500K.

18 x 2n2222 transistors

Works with basically everything, the sound card is from a usb-c headset

So I sort of bought all the resistors here by ordering 3 times and forgetting about the first 2 times. Atleast they are not all the same value. Altough i bought double the sets on 2w. Atleast i wont need too be buying resistors anytime soon.

So I wanted a nice and small proximity sensor module for my gesture-driven lights switch project, and found this nice device from ST: VL6180X proximity and ambient light sensor. There are newer sensors in VL53* family, but they lack ambient light part which is nice to have for a smart home device.

I've purchased a couple of test modules from Amazon (https://www.amazon.com/vl6180x/s?k=vl6180x) and shortly found that ALS (light) sensor produces garbage output no matter which software library is used.

After many hours of debugging and online search I've found out the reason: many modules sold on Amazon, AliExpress, etc, marked as VL6180X are actually VL6180. Which is exactly the same device in terms of pinout, software interface, etc - but lacks the ALS sensor.

The visual difference is prominent - VL6180X does have third large optical window in the center (which is the ALS sensor), while VL6180 does not. However, many many vendors sell cheaper VL6180 as VL6180X, as shown on the picture and on half of the modules on the Amazon link above.

So if you also want a proximity/ambient light sensor - look carefully at what you buy.

My Ibanez WD7 wah half-died (see: i damaged it). The "special" IC that created the effect (NJM2777) got damaged due to overvoltage. After trying a couple of circuits, this one is the one that won!

V2164 (Quad-VCA) used with single supply, and TL072 for virtual ground and control voltage inversion. PCB milled at work's CNC (yes, i'm privileged😁)
Quick 3d print to hold it in the casing (using existing screw ofc) and back in action!

So happy i could rescue my 15year old beloved beast with ~€7 in parts (and saved ~150 for a new wah!)

After a while i really wanted to make a pcb (or let a manufacturer produce it for me, like jlcpcb) and going from 1 idea to the next, i settled on making this somewhat universal usable pqfp-100 adapter board. The Z80 cpu was something i already had laying arround for a project, but dint want to spend too much design time if it where a dud.

Well, after designing the board, waiting a week or so. Soldering my first ever pqfp(or tqfp alike) it works ☺️ some wires to a generic z80 testboard and its walking the memory space for new instructions (all nop).

Now i need to programm a eeprom and get that pio and sio working. The pcb should also work for a RTL8019AS-LF network ic i got for a retro pc build.