Are the pinouts of the screw terminal block on the emonTx documented anywhere?
I’ve looked on https://wiki.openenergymonitor.org/index.php/EmonTx_V3.4 and on https://wiki.openenergymonitor.org/index.php/EmonTx_V3 but they both seem to have incomplete lists of the pin assignments:
|Screw terminal pin||Connection|
|1||5V (if powered via 5V USB)|
|4||IRQ 0 / Dig2|
|Screw terminal pin||DS18B20 Connection|
|3 - GND||GND (Black)|
|5 - Dig19||Power (Red)|
|6 - Dig5||Data (White)|
Firstly, am I correct in assuming that these two lists document subsets of the same overall pin assignment list?
Then, am I right that pin 5 is 3.3 V? And that pin 1 has 5 V available iff there is a USB power supply? And that I could connect a DS18B20 daisy-chain to pins 1, 3 and 6 to use 5 V as recommended by Maxim on https://www.maximintegrated.com/en/app-notes/index.mvp/id/148 ? Or would that cause problems for the input?
Edit: the post from albundy in the discussion at
https://www.raspberrypi.org/forums/viewtopic.php?t=36163 may be relevant.