After 2 years of usage, My home made monitoring scale (arduino, sigfox) took on water. My case was not waterproof enough, wire was not really made to stay outside… so many problem…
Recently I found a prepackaged lora component : Dragino LSN50
This system seems to fit perfectly to my need (robust, low power, wireless…) except the load cell connectivity.
My idea is to plug directly my load cell. And using the internal 12bit ADC .
I know I will not get the same accurency if I’m using a dedicated HX711. But for me, as I’m using a 72kg load cell (HBM PW2C), I should get 17.5g precision (72/4096 = 0.01757). And this precision is enough for me.
Any comment about this solution ? I’m totally wrong ? Is it something feasible ?