3 ms·
Nope. If you look at the schematics for the Pi 4 the power distribution is flawed. The USB-C 5v in is directly connected to the internal 5V rail. There is no b
by hughrr 5y ago
Nope.
If you look at the schematics for the Pi 4 the power distribution is flawed. The USB-C 5v in is directly connected to the internal 5V rail. There is no buck-boost or power conditioning or protection past a 5v-ish TVS diode. So any I2R losses on the PDU can cause a rail drop and the device to shat itself and trip BOD. And this is likely because to cut costs there's fuck all decoupling on the power supply rails. One high current drain or spike and bye bye kernel and SD card - corruptathon!
It's a joke of a product built to a price point which barely works. Most people are running on pure luck, not engineering.
This has been a problem with every generation of Pi so far. The tradeoff is a really bad one.
- tjoff 5y agoI'm talking about fire risk, not system stability. And with proper care raspberries are very stable as well. SD-card is the biggest downfall but for most applications you can either more or less have a read-only system or boot from network.