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- Jun 11, 2019
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Thank you for this tutorial. I tried to add a PH sensor to my RPI4 with reef-pi version 3.5. All the steps are clear but I run into a problem, maybe you know the solution?
When I connect the PH probe and card (PH-4502C) to the RPI4, the RPI4 won't boot. When I disconnect the 5v to the PH-4502C, the RPi4 boots normally. When I plug the 5v from the RPI4 to the PH-4502C when the RPI4 runs, the system runs normally but doesn't find any signal from the PH probe...
Hopefully my problem is clear and someone knows what is going wrong?
Thanks in advance.
When I worked on this,
The ads1115 was connected to the 3.3 v and ground of the pi, the phboard was connected to th 5v and to the ground of the pi. The signal out of the phboard connected to pin0 of the ads1115. And the ads1115 needs to be connected to the pi with sda and scl.
I hope this helps.