The two I ordered from Adafruit both behave the same way. I wanted to be certain that it wasn't because both of them don't friction-fit well (they both wiggle), so I soldered a 2x3 socket header onto one of them. When contact is made with the GPIO pins, they both supply power to the two connected devices (an SCD-30 board and an LPS22 board). Both connected devices work (also tested on a Qwiic pHAT to confirm). When I run i2cdetect for either one, these are the results I get:
Code: Select all
pi@[redacted]:~ $ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Code: Select all
pi@[redacted]:~ $ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- 5d -- --
60: -- 61 -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
I ran the same tests on a Raspberry Pi 3 and received the same results.
Ran the same tests with other sensors attached, same results.
The attached images show the three Qwiic SHIMs together, each taking a turn on the GPIO.
Will add 4th photo (close-up of my soldering) in a reply because I suspect someone might ask for that.