Electronic designer & maker https://nitter.cf/t.co/Z96YFEuXcW https://nitter.cf/t.co/Oc0jzfXKlY https://nitter.cf/t.co/mQ1g0MfJ0O
Mexico
Joined October 2015
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How old are you?
Well, there was a time when you made your own training boards at home,the delivery could take a month and the size was limited to 50x50mm,very expensive,no amazon,no PCBway nor JLCPB.
I almost forgot the battle " PIC vs AVR", asm vs c 😝. 8bits papi!
Fabrizio retweeted
If you've put an ESP32 on a board, where it sits matters more than you'd think.
Espressif tested one of their modules two ways: antenna past the board edge, and mid-board over copper. On channel 11, the mid-board one put out 6.9 dB less, about a fifth of the power.
Fabrizio retweeted
Where you put a buck converter's input cap matters. Each time the chip switches, current jumps around a loop. A longer loop rings harder due to the increased inductance. Keeping the input capacitor close reduces the ringing.
Fabrizio retweeted
Should a USB-C connector's shell go straight to ground, or through an RC (1 MΩ ‖ 4.7 nF)? Open boards are split.
I hit both with a simulated 8 kV zap. Either way, 30 A lands in your ground. The cap is just left holding 249 V.
Answer: straight, unless the box is earthed. 🧵
Fabrizio retweeted
Thinking of a AR APP for my boards, who thinks this is an interesting idea ?
Maybe I can add in the chronicles to it too!
Fabrizio retweeted
Efemérides. Hace poco más de 15 años (finales de Septirembre de 2011) de la charla "Robots Libres e imprimibles" dada en la mítica OSHWCon 2011 de Madrid
El proyecto CloneWars estaba en sus inicios...
obijuan.github.io/iearobotic…
Fabrizio retweeted
How WCH combines eUSB2 signal translation, USB 3.2 Gen 1 hub functionality, and native USB Type-C support in a single chip.
Read below~
Fabrizio retweeted
It was cool, you can download the slides here fpgahorizons.com/london-26/
Next up FPGA Horizons US, April 27!
Fabrizio retweeted
This is easily the most complex board I’ve ever made. Trion T120 FPGA connected to 112 buffer IO lines. I attach (much cheaper) daughter boards to it and use the FPGA to explore and measure their behavior. NEC V35 in the hot seat this week.
Fabrizio retweeted
Finished bringup of the STM32 G474 LMG5200 half bridge GaN 3 phase BLDC controller board.
Testing using a small gimbal motor in FOC with sensorless BEMF observer feedback
Fabrizio retweeted
cool concept to harvest chips from old boards, need to do that on DDR ram ;)
Full board scan and plan. This technique scans the whole board for chips that need to be removed and creates a path to move to the next chip for full autonomy. Tuurny.com
Fabrizio retweeted
Last 3 units of this Epdiy Kindle controller for any Eink of 34 pins (usually 6” 1024*758)
tindie.com/products/fasani/e…
