A high-altitude balloon flight computer in KiCad. The INA228, LDL1117 LDO, TPS2121, shunt, fuse and AO3401A symbols came in from EasyEDA with "every pin set to unspecified, so ERC couldn't check their connections." Setting real pin types turned the checks on, which then fired "power input pin not driven" on rails fed through connectors, fuses or FETs, so the PWR_FLAGs had to be reworked. The same PR shows about 165k changed lines in the EasyEDA STEP models that are line endings only, with the fix parked in a different PR. A clean ERC here meant the check had nothing to look at.