4 ms·
> I don’t think it’s a power issue as it’s getting 5V1A from a power outlet directly to USB-C into the device. It's not the total voltage/wattage the PSU can p
by filterfiber 3y ago
> I don’t think it’s a power issue as it’s getting 5V1A from a power outlet directly to USB-C into the device.
It's not the total voltage/wattage the PSU can provide, but the voltage at the processor.
The ESP's varying current draw notoriously causes too much noise and a lot of boards don't have large enough decoupling capacitors so the voltage drops too much and it glitches out. Also a warning that USB PSU's can very MASSIVELY in quality (I'd suggest an apple one for testing if you have one handy).
I think you're right that the RISC-V processor is either better behaved and draws power more consistently, or the board has shorter traces to it's bypass capacitor or a larger bypass capacitor.
- stavros 3y agoThis is correct, I thought it wasn't and was going crazy trying to debug my Pi 3 resetting my 3D printer every time, with any of ten power supplies I tried, including a configurable bench PSU. I switched to the official Pi PSU after someone said "trust me on this" online, and yep, zero issues in all the years since.
- numpad0 3y agoIt's voltage for Pi 3. They forgot to account for voltage drop due to protection or something. Official as well as third-party Pi 3 specific adapters are rated at 5.1V to mitigate that problem.
- nottheengineer 3y agoEarly alexa devices also have power supplies that are rated at 5.2V, those could be an alternative. I also had a good experience with a 30W oneplus warp charger after some power issues with cheap 5V2A ones.
- iicc 3y ago>don't have large enough decoupling capacitors Is this something you can eyeball to guess at quality?