Why I Shipped Coulomb Counting Before the Hardware Worked

An embedded battery SDK story about ambitious algorithms, stubborn breadboards, and the discipline of shipping anyway. I spent a weekend implementing coulomb counting for my open-source battery monitoring SDK . The code is in production. The hardware doesn't actually work yet. That sentence used to make me anxious. Now I think it might be one of the most useful things I've learned about embedded engineering. The voltage-lookup-table problem My SDK has been shipping state-of-charge estimation for