ds18b20
Posted: 12 Feb 2023, 12:48
Hello
I have a wt32 eth01 with ESP_Easy_mega_20221224_normal_ESP32_4M316k_ETH.
I have temperature sensors connected to GPIO5, GPIO4 and GPIO2. This works and I can see that the sensors are all OK.
ESP reports that Parasite Powered is false. I have 4.7 k Ohm between DQ and VDD (3.3V).
Now I want to add a 4 string.
However, I can't get any success on any other GPIO.
I have tried on a test environment all combinations with a working temperature string to get the other GPIO to work, but without success.
GPIO 12 would have worked, but then prevents the ESP from booting because of the 4.7 k Ohm (Must be at 0V during the BOOT).
What am I missing? Why can't I get the other GPIO's to work? Unfortunately, I am reliant on the cable-bound network and cannot switch to a d1 mini or somethingelse.
I have a wt32 eth01 with ESP_Easy_mega_20221224_normal_ESP32_4M316k_ETH.
I have temperature sensors connected to GPIO5, GPIO4 and GPIO2. This works and I can see that the sensors are all OK.
ESP reports that Parasite Powered is false. I have 4.7 k Ohm between DQ and VDD (3.3V).
Now I want to add a 4 string.
However, I can't get any success on any other GPIO.
I have tried on a test environment all combinations with a working temperature string to get the other GPIO to work, but without success.
GPIO 12 would have worked, but then prevents the ESP from booting because of the 4.7 k Ohm (Must be at 0V during the BOOT).
What am I missing? Why can't I get the other GPIO's to work? Unfortunately, I am reliant on the cable-bound network and cannot switch to a d1 mini or somethingelse.