First foray into OpenOCD has not gone well. 😅 I seem to be able to communicate with the SAMD21, but I can't flash the bootloader. First issue seems to be "no flash bank found for address 0x00040000". Now I just have to figure out what the f✖✖k that means.

#diy #maker #openocd #pcb #pcbdesign

Ach ich freu mich so 😍. Unsere SampleCards sind endlich hier ❤️😘🥳. Für #pcbdesign perfekt geeignet mit allen Farben und Formen von #jlcpcb (andere Hersteller folgen noch). #lötenVerbindet #pcb #kicad #lotenistliebe

https://shop.blinkyparts.com/de/SampleCard-PCB-Musterkarten-Set/blink23203

Very interesting section about 1970s PCB design on this video; drawn by hand, yes, but the use of pre-printed transfer symbols and *VELLUM GRAPH PAPER!* :O https://www.youtube.com/watch?v=_YfN3LBaGkE&t=543s

#pcb #pcbdesign #retrocomputing

Your BMS measurement error is probably a layout problem

Even with a good IC, poor PCB design ruins everything.

Top mistakes:

Shared ground paths for power and sensing
No Kelvin connection for shunt resistor
High-current traces too close to signal lines

📉 Result:
Offset errors, noise injection, unstable protection behavior.

👉 Fix:
Treat current sensing like analog precision design, not power routing.

#PCBDesign #Electronics #BMS #PGYBMS