02-24-2023, 03:02 AM
Hi,
Thank you for the fast reply! I should have provided more information in my first message
.
I currently use 3 x DS18B20 sensors as the Tasmota software can support up to 8 sensors on the same input. This inquiry is not for additional temperature sensors but to add a Temperature and humidity sensor (AM2301) to the design.
Examining the circuit diagram it should have been able to do this as the circuit shows 2 x TEMP inputs (GPIO 12 & 13). However you made a smart decision and the pin was replaced with 3V3. This is understandable (and actually very good!) but it does make a second TEMP input problem as I initially selected the A4 board based on examination of the circuit diagram as it showed 2 x TEMP which I now find does not match the REV 1.2.4 board.
Because R27 and R28 are not used I think I am asking for the correct diagram in case I can make these adjustments.
Please see attached pictures. These highlight the areas on the circuit diagram which are in error.
You can also see the photo where I have used 3 x DS18B20 sensors connected to the header. The presence of the 3V3 made this very simple.
Thank you for any assistance you can with an updated circuit or information that may help.
(Perhaps I can use the IR RX Led circuit [GPIO 23] with modification if GPIO 12 is too difficult?)
Thank you
Adam
Thank you for the fast reply! I should have provided more information in my first message
.I currently use 3 x DS18B20 sensors as the Tasmota software can support up to 8 sensors on the same input. This inquiry is not for additional temperature sensors but to add a Temperature and humidity sensor (AM2301) to the design.
Examining the circuit diagram it should have been able to do this as the circuit shows 2 x TEMP inputs (GPIO 12 & 13). However you made a smart decision and the pin was replaced with 3V3. This is understandable (and actually very good!) but it does make a second TEMP input problem as I initially selected the A4 board based on examination of the circuit diagram as it showed 2 x TEMP which I now find does not match the REV 1.2.4 board.
Because R27 and R28 are not used I think I am asking for the correct diagram in case I can make these adjustments.
Please see attached pictures. These highlight the areas on the circuit diagram which are in error.
You can also see the photo where I have used 3 x DS18B20 sensors connected to the header. The presence of the 3V3 made this very simple.
Thank you for any assistance you can with an updated circuit or information that may help.
(Perhaps I can use the IR RX Led circuit [GPIO 23] with modification if GPIO 12 is too difficult?)
Thank you
Adam