The quick question is can I input a string of data from an RF24l01 to and Ra-02 unit?
The reasons why
with a lot of help from this forum over the past two or three years I managed to build a unit to monitor our water tanks at our remote cottage.
Using an ultrasonic HS04 (waterproof) unit I measure the water level in the tank. The processor is a nano. The nano passes the info on to the LoRa. The Lora sends the data to the cabin, where a LoRa in receiver mode receives the data. The LoRa is physically attached to an ESP8266 that connects to the internet (Internet is not available at the well, but is at the cabin). The data is sent to the Blynk cloud, and then down to my phone. Works great. Thanks again.
HOWEVER... there are four tanks. We don't keep them all on at the same time. So I switch between them, and they are at slightly different levels. Only one tank at a time is connected to the distribution system.
I created a "mini" tank. A six foot piece of ABS pipe that is placed vertically and attached to the main system, so that no matter which tank is "on" the mini tank will read the level. However if I change from one tank to another, the "0" level changes, so I've had to build a "Fudge" factor into the system to add a specified figure depeneding on which tank is used. Cumbersome, but works.
I got to thinking that if I could build self contained mini sensors and place them on top of each tank it would work better. The tanks are not too far apart, but running wires between them would be messy.
I began to think that if I could use NRF24L01 as the transmitters on each tank, send then data to a nearby NR24L01/nano "hub", process the data and send it as a "string" to the cabin, it would be a superior system. The problem is that NRF24L01 won't go through the forest to the cottage. I've tried it - it doesn't work. But the Ra-02 works great!
My understanding (and it's limited) is that the Ra-02 is great for distance - not terribly great for handling lots of data. The other problem is that there is no way of keeping the data on seperate channels or frequencies with Ra-02 as there is with the NRF24l01 - which is great at that job. So I thought my a combo where the NRF24l01 gathers up all the sensor data , packages it as a string, then hands it off to the LoRa which transmits it to the cottage.
I spent most of the day searching the internet to see if anyone had tried this method of having the NRF24l01 handshake with the Ra-02 and came up empty. The rest of the equation looks very doable.
So has anyone seen any projects that have attempted the NRF24L01/Ra-02 combo?
Also any alternative suggestions or approaches would be welcome. ALso I'm happy to share the sketches from my working system.