ESP8266 connected to ADC4-20mA v1.2
Posted: Fri Jun 21, 2019 8:48 amDears,
I'm trying to connect and communicate an ESP8266 nodeMCU board with a current sensor ADC4-20ma v1.2, by using communication protocol I²C, with no success.
I have used two libraries to establish communication:
- Wire_h;
- Nanoshield_h;
For the communication between then, I connect pin 4(nodeMCU) to SDA(ADC4-20ma) and pin 5(nodeMCU) to SCL(ADC4-20ma), and I tried others, but no answer.
I have used 5V power supply on the ADC4-20ma as power supply, but I know that ESP8266 operates with 3,3V. Could it be the problem, or is there other parametrization I have to pay attention?
I have tested the same application with Arduino UNO, and it worked perfectly.
Thank you for your help!
Regards,
Richard.
I'm trying to connect and communicate an ESP8266 nodeMCU board with a current sensor ADC4-20ma v1.2, by using communication protocol I²C, with no success.
I have used two libraries to establish communication:
- Wire_h;
- Nanoshield_h;
For the communication between then, I connect pin 4(nodeMCU) to SDA(ADC4-20ma) and pin 5(nodeMCU) to SCL(ADC4-20ma), and I tried others, but no answer.
I have used 5V power supply on the ADC4-20ma as power supply, but I know that ESP8266 operates with 3,3V. Could it be the problem, or is there other parametrization I have to pay attention?
I have tested the same application with Arduino UNO, and it worked perfectly.
Thank you for your help!
Regards,
Richard.