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by nappleton
Wed Mar 11, 2020 12:31 pm
Forum: General Discussion
Topic: Power rail transience when using SPI on battery
Replies: 2
Views: 5055

Power rail transience when using SPI on battery

Hi everyone, Working on a small datalogger project using an ESP32-WROOOM that involves an analog sensor signal being recorded and saved to SD card. Having a big power rail spike issue that has been isolated down to the SPI. Setup is as follows: 1. Core → ESP32-WROOM 2. Power circuitry for USB and ba...