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1. When RESET or initial power on happens on non 5V USB power (using LiIon battery and MCP1700)

   1. WiFi radio begin() will fail and system reboots

   2. second connect will pass

   3. sequence fails again after deep sleep and timer WAKE

2. TODO: Scope 3.3V supply and look for any signs of droop

   1. monitor regulator output and 3V3 pin on dev module

3. 01 Jul 2021 Observed that fully charged battery will RESET controller after deep sleep, but as voltage gets < ~4.1V controller stops resetting.

4. 01 Jul 2021 4:30am - Experiment start

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01 Jul 2021 5:55am - checkpoint before work

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More data to follow. This is a placeholder chart. I expect to see /boot/ topic to start to increase when batteryVoltage goes down.

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