by Sjaak | Dec 12, 2017 | Blog, PCB, Prototyping |
A couple of times a year I send in a bunch of PCBs. As usual I combine multiple designs and have them delivered express. That sounds a bit expensive but when ordering about 4-5 designs the cost is almost the same as the other snailmail options. I also make sure I send...
by Sjaak | Dec 4, 2017 | arm-cortex, Blog, gd32, stm32 |
It has been a while since I wrote about ARM development. I recently made a Black Magic Probe (BMP) clone which acts different then the original. The BMP can source power to the target, but on my version control signal is inverted. Not a big deal, but can give...
by Sjaak | Oct 2, 2017 | Blog, PCB |
Designing a PCB businesscard seems to be the go-to for a hobbyist electronic engineers. Most people design either a passive PCB, USB HID/MSD device or battery powered LED frenzy. Uptill now I haven’t seen any cart that has a RFID, not even regular paper ones. As...
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...
