I had a few problems assembling the PCB into the PVC tube, this was because I had not thought in detail about two things: * how to solder on the wires, so that afterwards the PCB could be pushed into the tube.* how to secure the PCB in the tube. When...
I cut the PVC tube to match the width of my keyboard (256mm), then drilled the following holes:3mm hole in the center of the middle of what will be the top of the tube, for the two prongs on the bottom of the LED.Two 1.5mm holes 105mm from the right...
2024-01-20 I've just found and bought this board from eBay. Made by DSP Design Ltd. It uses the 7-thou pitch DIL packaged device (ugh!) which can only access half the memory of the PLCC68 version. I don't expect this to come with a manual or circuit...
Whipped up a prototype PCB in KiCAD, ordered a batch of parts from Digikey, all set to go, yeehaw.(not pictured in the above schematic: power LED and some other board affordances.)Of course I knew that this probably wouldn't work first-time, but I still...
I'll put the cool part right up top: it works. (and i blew up zero mosfets in the process!)Version 0.2 boards arrived lookin' nice and spiffy. Everyone else I've seen who does a variant on this project uses a primary inductor made either of regular...
First Light accomplished. What did I learn?The circuit in its current iteration,1: gets hot alarmingly quickly2: is trying to draw more power than I can actually supply. Those seem related, yeah. apologies for the excessively american temperature...
Spent a big chunk of the weekend adjusting a variety of component values. Here's the waveforms with the circuit unloaded (no toroid), at 18V supply: Yellow is Gate (5V/div), purple is Drain (50V/div), blue is feedback network bias input at TP5...
The application skeleton for ESP32 (main CPU) was built on my ksIotFrameworkLib, which provides some fancy stuff like device configuration portal, MQTT support, LED management etc. Then the E-180 module has been studied in relation to firmware update....
In my previous post I rambled on about having to plug little wires into a breadboard. It turns out that this is a good thing. I did have a mistake in my design, not with the schematic but the footprint for one of the components. If you have been reading...
I was think that I need get my hands on a a caliper first and disassemble it. To be honest I did not get any super interesting information out of that. I just ruined perfectly good caliper. The t-scale PCB is 0.5mm thick and has copper only on one side...
A story of developing this mod...I was asked to do a latch mod on a Boss pedal, a thing people already did in a different way: by using a latching footswitch, either added to the pedal itself or external. Both ways required drilling of the pedal's enclosure...
I've been busy working on the PCB and routing on the computer, but while I'm getting much quicker and better at it, I've ran myself into a corner. We're gonna need a bigger board... This project is one of odd anachronistic design choices, pulling in...
Bottom Line Up Front Plug it in, turn it on, Darn it, my coin acceptor does nothing. OK, so what’s this orange (amber) LED all about? TL;DR I got such a deal. So, I saw an auction for a dozen Microcoin QLs, about $100 + shipping. That’s a great...