How do you mitigate voltage ripple in a battery-powered ESP32 project?
Douglas.Duncan 2025-12-23 11:46:50 5 Views0 Replies Hi everyone,
I’m working on a battery-powered ESP32 IoT project and looking for practical insights on handling voltage ripple when powering both sensors and a radio module. I know ripple and noise can cause instability, especially when sensors draw bursts of current or when the radio transmits, which can lead to ADC errors, resets, or weird sensor readings.
Here’s my setup:
ESP32-S3 board (DFRobot FireBeetle / similar)
Sen0368 Temperature/Humidity Gravity sensor
SEN0xxxx generic Gas sensor
Wireless radio (e.g., Wi-Fi / BLE)
Powered from LiPo battery + onboard regulator
I want to make sure the power rail stays stable and avoid brownouts or noise that might affect sensor accuracy.
I’m especially interested in techniques that work well for battery-powered, low-power, and compact designs.
How do you handle sensor current spikes that exceed regulator capacity? Any tried-and-true circuit topologies or filtering schemes for clean 3.3V rails in battery projects?
Looking forward to your experiences and tips! Thanks in advance!
