@gmx, good advice ![:D]( "Very Happy")
I think my Pico pins are safe -- I'm not tempted to try such adventures. ![:D]( "Very Happy")
@ascii_is_7_bits, good move with the 'scope -- getting solid troubleshooting data is good embedded practice. Often it's hard to move forward without good data.
Let's see what the scope show. If the I2C waveforms are there, check the levels and the shape or slew rate. About using another level converter... dicey, especially if the new board has 2N7002s for the signal to get through. My thinking is that the circuit is an old design and the SMD parts are big, so modifying it is fairly appealing (to me) if you've done some SMD soldering.
I think my Pico pins are safe -- I'm not tempted to try such adventures. @ascii_is_7_bits, good move with the 'scope -- getting solid troubleshooting data is good embedded practice. Often it's hard to move forward without good data.
Let's see what the scope show. If the I2C waveforms are there, check the levels and the shape or slew rate. About using another level converter... dicey, especially if the new board has 2N7002s for the signal to get through. My thinking is that the circuit is an old design and the SMD parts are big, so modifying it is fairly appealing (to me) if you've done some SMD soldering.
Statistics: Posted by katak255 — Fri Feb 07, 2025 12:08 am