We're building a bicycle product involving loadcells, and one of the issues with them is that strain gauges typically have pretty low resistance. As we need readings at a relatively high sample rate (measuring pedalling dynamics) it's a lot of fun waking up loadcells, getting the sigma delta ADCS to get nicely-settled 24-bit results across multiple channels and synchronising the whole thing across 4 separate sensor nodes. Basically we have to pedaL and chew minimal joules at the same time.
Latest hardware has coulomb counters to keep track of charge state; you probably already know it but the nPM1100 has some good press.
Latest hardware has coulomb counters to keep track of charge state; you probably already know it but the nPM1100 has some good press.
* https://www.nordicsemi.com/products/npm1100