Soil probe rf 433mhz or Lora

Hardware
21

I am interested to know what sort of battery life you get from those esp32 lora boards?

22

Here is some feedback on that :

Note that in the architecture proposed before, the esp32 board is used as a gateway with continuous power. For the nodes the envisaged solution is a moteino or equivalent on a battery (not an esp32 board)

23

The TTGO I am using, running openmqttgateway (just BT and LoRa), was powered by an 18650 (one of those phone charger bricks, 3350 mAh) and the device remained up for about 8 hrs.
I’m not at my setup so this is from memory, but I’m happy to get you more granular metrics if you’d like.

24

Took me a minute to get it working, but i’m definitely getting better range with this one.

Thanks!

1 Like
25

Found one!!!

Can’t wait to try it out!
@1technophile
Do you think you could help me figure out how to code this to work with OMG?
Happy to buy you one if you need.

Thanks

26

Of course !

1 Like
27

First step would be to test with 2 esp32 lora board that you can send and receive.
See below :
https://docs.openmqttgateway.com/use/lora.html
Once done you can upload OMG to the receiver one, configured as a lora gateway. Check that you receive now the msgs at the MQTT broker level.

If yes you can go further and upload the program example included with this sensor. Check before that all the Lora parameters matches.

If it is working. Congratulation. If not you can give more details here.

28

So I’ve gotten OMG working for some time now on a lora capable heltec mcu with BLE devices, so I think I’m good there. I guess I can test the sender sketch in the other board to ensure I can reciever lora.

Where I do need help for sure is how to get data from a sensor and send it as mqtt via lora. Hopefully getting the soil probe to do that won’t be too hard!

I appreciate your help!!!
Thanks

29

Yes this would be a good step

You need to test the program provided as an example with the sensor first and see if the data are received properly.
Regarding MQTT via LORA, the gateway LORAtoMQTT will deal with this, and you are going to verify that this is working prior to this step.

31

Here it is!
Enjoy!

1 Like