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Hardware issues
Hardware issues
Although usual intention of the original hardware designer is to produce high quality electronics, this cannot always be guaranteed by vendors re-using open-hardware design or altering it in any way.
The purpose of this page is to facilitate board inspection to detect deviations from the original design, which may deliver sub-optimal performance.
Typical causes of failures
- Chip with less memory or lower clock different from original STM32 F405
- Prototype chip (ARM A) with bugs instead of latter silicon revisions (ARM Z, 1, 2, Y)
- Shorts or not enough solder paste
- Bad capacitors causing resets when connecting board over USB
- Bad regulators
- Missing ESD protection diodes on Flexi, Flexi-io or Main port (except Nano which has none by design).
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