VCC pins usage for several sensors
Posted: Mon Mar 23, 2020 7:53 pm
I am using ESP32 with micropython code to read sensors data (mainly DHT22 and DS18B20 for temp and humidity). Both sensors that I mentioned use pull up resistor between data and VCC pins. Let say I want to connect 10 sensors (combo of above) to one ESP32. Can I use same VCC pin and 10 pull up resistors between that single VCC pin and 10 different data pins on 10 sensors? Or is it not a good practice? If this is bad practice, what solution do I have?
I see that my ESP32 (LOLIN32) has several 3V pins. Are those "independant" or just are there for convenience?
I see that my ESP32 (LOLIN32) has several 3V pins. Are those "independant" or just are there for convenience?