In theory, this is a straightforward breakout board that should "just work", because Adafruit wired it in roughly the same way:
https://learn.adafruit.com/adafruit-max ... p?view=all
Since good low impedance power generally solves things, it's possible that your board may have less-than-ideal caps, specifically the 10uF one. The Pico board schematics specify X5R for the 47uF DC-DC tank capacitors. It's the one thing that keeps gnawing at my mind -- what kind of 10uF cap they put into that board. I don't know all that much about such specs myself, but see this:
https://www.allaboutcircuits.com/techni ... tor-types/
For low power sensor breakout boards etc, I guess we can get away with using cheaper caps, but maybe not so for more power-hungry chips.
[Edit] The manufacturers in Shenzhen probably don't get their SMD caps from Farnell.![:D]( "Very Happy")
If we take stock of the components on the breakout board, it doesn't look like anything can go wrong... except for that 10uF.
https://learn.adafruit.com/adafruit-max ... p?view=all
Since good low impedance power generally solves things, it's possible that your board may have less-than-ideal caps, specifically the 10uF one. The Pico board schematics specify X5R for the 47uF DC-DC tank capacitors. It's the one thing that keeps gnawing at my mind -- what kind of 10uF cap they put into that board. I don't know all that much about such specs myself, but see this:
https://www.allaboutcircuits.com/techni ... tor-types/
For low power sensor breakout boards etc, I guess we can get away with using cheaper caps, but maybe not so for more power-hungry chips.
[Edit] The manufacturers in Shenzhen probably don't get their SMD caps from Farnell.
If we take stock of the components on the breakout board, it doesn't look like anything can go wrong... except for that 10uF.Statistics: Posted by katak255 — Wed Jan 08, 2025 1:04 am