Hello everyone,
I am thinking of starting a new project to learn about LoRa. I would like to make a small network with 4 devices where one is the Master and asks for information from the other 3 devices that will have a DHT22 sensor each to read temperature and humidity. I would like to know what LoRa modules would you recommend using if the 3 devices will be outside and battery supported.
Thank you!
have a look at at a similar project decimals-strings-and-lora
the choice of Lora Board can depend on location and frequiencies allowed
I use Adafruit 32u4 Lora boards but a cheaper alternative wouldd be RA-02 Lora boards if suitable for your location
Thank you @horace I will look into the allowed frequencies and to the post!
have a look at LoraWAN frequencies-by-country
The Adafruit Feather series features a couple of Arduino-compatible LoRa modules, with chargers for LiPo battery power.
Anything that will be kept outdoors and powered must be well protected from condensation, which causes corrosion leading to rapid (days to weeks) destruction of unprotected circuit boards.
reading online there is plenty of discussion of problems with DHT devices in particular with negative temperature readings- see post dht22-negative-readings-is-there-a-solution
consider BME280 and BMP280 sensors
Thank you again @horace! I didn't know about these problems...
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