29-10-2023, 07:55
Hello Andre
The + from solar cell connects to "SOLAR" on the TX board, the - connects to GND
The output pin of the UVM-30A connects to "UV" on the TX board, the other two connect to 5V and GND.
- If you are using the solar cell provided with the solar/UV interface set RV1 to around 2.7K Ohm
- For the UVM-30A UV sensor set RV2 to 0 (zero) Okm
40W should be fine, also important is battery capacity, 7Ah is minimum.
If you which to try the HTU21 its ok, system supports that sensor.
Hope I had helped.
Rgs
Werk_AG
(28-10-2023, 21:51)Sun_Dancer Wrote: and here lies my problem, how or where do I connect the solar cell to the transmitter unit? Plus of the solar cell to solar input on the solar/UV/I2C connection block and minus to GND on the solar/UV/I2C connection block?
UVM-30A signal line to UV on the solar/UV/I2C connection block, plus and minus each to 5V and GND?
Unfortunately I couldn't find any information about it anywhere.
The + from solar cell connects to "SOLAR" on the TX board, the - connects to GND
The output pin of the UVM-30A connects to "UV" on the TX board, the other two connect to 5V and GND.
- If you are using the solar cell provided with the solar/UV interface set RV1 to around 2.7K Ohm
- For the UVM-30A UV sensor set RV2 to 0 (zero) Okm
(28-10-2023, 21:51)Sun_Dancer Wrote: Unfortunately, I have already discovered that my 20 watt panel is not enough, in sunny weather I can get through the night, but now in the autumnal weather it is not enough. A 40W panel is already ready.
40W should be fine, also important is battery capacity, 7Ah is minimum.
(28-10-2023, 21:51)Sun_Dancer Wrote: I had read that the HTU21 delivers the most accurate values and just wanted to test this sensor. Thanks for the tip about it not being suitable for outdoor use. There are still several SHT31 sensors available, so I will probably use them again.
If you which to try the HTU21 its ok, system supports that sensor.
Hope I had helped.
Rgs
Werk_AG