@davee @josiah430 Bill (dronebot-workshop) did an excellent video/article about this type of thing for the PICO. I know it's a totally different board...

@davee I will be using my scope that has built-in I2C decoding. I will report back.

@davee @allocsb I just bought 6 of them so I can see for myself, but according to Bill, 5V I2C is actually ON or positive at slightly less than 3V so ...

@allocsb If yoiu have a scope, you may be able to see what is happening better, some scopes even have I2C decoding. Or maybe a digital logic probe, bu...

Here is the Ali link for the dual

Don't we all. The SMD issue may be a problem, but have you considered using an interposer board? These are small boards that you stick normal header p...

@davee The OP has at least attempted the test I suggested. Although using a VOM is not ideal, he did have the guts to believe the other evidence and a...

I looked at the datasheets you linked to. Even if there is some data I have not seen, the fact that other folks have connected the board to the Pi 5VD...

@davee Yes the Pi 5VDC power pin.

@davee That is exactly the circuit diagram I am referring to. There is only two mentions of 5VDC, pin 40 VBAT and pin 38 RSTPDN. I also note that b...

@davee He started with Pi suplying 3.3v, then tried external power using a cheap PSU and it gave poor results so then he tried the Pi 5V pin as the li...

@davee I do not see the following on the datasheet. Which page do you see it on? but the incoming 5V also goes to the 'logic voltage converter' co...

@davee We can ask the OP @allocsb but I am fairly sure that at one point as noted by you, he had both I2C pins plus ground to the Pi and VCC to 5VDC o...

@davee According to the library author there is no danger to the Pi by using the Pi 5V pin, it is just as not sufficient as the 3.3V pin. The origin...

@davee @allocsb But this board immediately converts 5V to 3.3V and the 5V is never seen again. Did you look at the pages I mentioned as well as the Us...