Troubleshooting ADC Readings from Photodiode on Arduino
Hi everyone,
I am trying to rebuild a device and have wired everything according to the schematic:
You can see that the output pin of the photodiode (pin 5) is connected to the ADC pin A0 of the Arduino. By adjusting the potentiometer, I should of course get values between 0 - 1023 (10 bit ADC). However, no matter how I adjust the potentiometer, I always get 1023, so I think the sensor is "overshooting" all the time. I have tested the potentiometer previously and it works fine. I suspect there is something wrong with the wiring diagram.
Any ideas? Thanks in advance.
I am trying to rebuild a device and have wired everything according to the schematic:
You can see that the output pin of the photodiode (pin 5) is connected to the ADC pin A0 of the Arduino. By adjusting the potentiometer, I should of course get values between 0 - 1023 (10 bit ADC). However, no matter how I adjust the potentiometer, I always get 1023, so I think the sensor is "overshooting" all the time. I have tested the potentiometer previously and it works fine. I suspect there is something wrong with the wiring diagram.
Any ideas? Thanks in advance.
Solution
In the circuit i cant see where the arduino is connected to the power source
The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.
2,984Members
Resources
Similar Threads
Was this page helpful?
