by Sjaak | May 28, 2019 | Blog, china, decap, testing |
It has been a while before I posted something useful. On my search for obscure chips, I came around another interesting Chinese chip (which I don’t reveal yet). The chip was advertised as a cheap drop-in replacement for a American IC so I suspected it would be a...
by Sjaak | Jan 18, 2018 | arm-cortex, Blog, gd32, stm32, testing |
Most of us do know the ST line of ARM chips called STM32. They come in multiple flavours and the STM32F103 is one of the most common entry level family of chips. They are called by ST as mainstream. They are a full featured 32 bit ARM Cortex M3 chip running at...
by Sjaak | Sep 22, 2017 | Blog, EAGLE, manufacturing, testing |
I played some time with the idea of making a cheap testing/programming jig. For the T12 controller I had one professionally made in Shenzhen. It wasn’t too expensive but IIRC it was about 65-75 USD and came without any wiring. Testing jigs are basically a...
by Sjaak | Jul 23, 2017 | Blog, PCB, testing, tipsntricks |
As a good electronic hobbiest tradition I started to design a businesscard from PCB material. Downside of all the businesscards (and PCBs in general) is the limited number of colors you can use: FR4, soldermask (with or without copper behind it), silkscreen or bare...
by Sjaak | May 1, 2017 | Blog, china, Prototyping, testing |
When I was in China last year I sourced a couple of small E-ink displays (GDEH0124S01) through Taobao. They were simple ones with 8 14 segment characters. After some searching on the Chinese website from the manufacturer I found the datasheet. It was by all means not...
by Sjaak | Mar 22, 2017 | Blog, Prototyping, testing |
Today came in a new batch of PCBs from DirtyPCB.com, of which one is a new revision of the BlackMagicProbe. This revision is almost the same except it has a polyfuse in its powersupply to the target, a dedicated voltage regulator instead of P-FET, its programming...
