Category: Educational

ST/STM32 SW Quality

I have written about this issue before, but ST never fail to suprice me on their SW quality – crap that don’t work: Bugs, bugs and bugs! I updated STM32CubeIDE to version 1.6.0 yesterday and discovered that the IDE fail to load the images – I had to default to STM32-Link Utility to be able…

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Raspberry Pi PICO – RP2040

Having worked with computers in 40+ years I must admit that I sometime dig into nostalgia and look at vintage computers before I recall how little you got done and how much time things took. The world has moved on – and thanks for that. RP2040 or Raspberry Pi Pico if you like is a…

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Automotive Control System

The wheels above are cool, specially since they can carry a lot of weight. But, the motors are 2 x 2.5KW and the belt driven design is very open making it easy to be contaminated. The powerfully motors are more designed for speed than for driving slowly, but I will optimize that later. Position system…

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Using old solder paste

I just started on 2 new motor drivers for my new project and soldered DRV8301 which is a dense 58 pin crab using an old solder paste. Soldering these crabs are easy and done in minutes, but I struggled with this paste and ended up with a driver that had pins not connected causing 2…

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ISO1042 Galvanic CANbus

I recently discovered this chip (ISO1042) and wanted to share a circuit I found. This circuit is excellent, but it has two flaws: Firstly you need a small isolation coil 10-20uH between ISO 1042 and VCC1. This act as a filter so that higher frequencies used by the buck converter in ISO1042 do not disturb…

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