Ok thanks, here is a link to the one I had in mind:
http://www.mouser.com/ds/2/261/FX1901-8147.pdf
The object I’m trying to weigh (bee hive) can be up to 150kg. What I’m particularly interested in is getting an initial measurement and then monitoring the deviation + / - to this. Ideally I’d like to measure this in grams.
The hive itself sits on 4 wooden legs, the simplest solution I guess would be to have a load cell under each leg, as this is only a hobby that particular approach looks to be cost prohibitive, so not entirely sure how you’d get the weight of something with 4 legs and centre the load to single point?
This project is still in the early stages and my background is more software, however just looking at it one step at a time
Other things that I need investigate are drift, if you stick a 50kg weight on a load cell and come back in month would it still report 50kg (assuming constant power supply). Also this would be outside albeit in fairly moderate climate would that impact it?
I also not sure how multiple loads cells are connected. Found this online example for connecting a single load cells
http://edg.uchicago.edu/tutorials/load_ … ematic.png
If you connect two does it mean that you need another amplifier and that then connect that amplifier to another analog port, then leaving you to combine the two readings in software?
As for cost, I already have Arduino Uno, so for the rest I’d to keep it under £100 all in.
Happy to receive any suggestions / pointers