My custom ESP32-S3 data logger with RTC & Micro SD

[Smartbeedesigns]

Hey all,

Thought I'd share my ESP32-S3 data logger I designed and built. I spent a lot of time on it and several revisions to try and get the best data logging experience out of it.



Here are some features.

• High precision RTC built in (DS3231). 
• CR1220 RTC battery backup. 
• Micro SD card slot for storing data. (supports up to 16gb micro sd cards). 
• Deepsleep as low as 21uA.
• Dual 600ma LDOs for extra power headroom for powering external sensors.
• Dual stemma/qwiic connectors for easily attaching adafruit/sparfun sensor breakout boards. 
• 1S LiPo battery connector. 
• LiPo battery charging circuitry.   
• Battery on/off switch.
• LiPo battery voltage monitoring to track battery life.
• USB-C.
• USB detection circuitry.   
• Open Source.
• Supports Arduino & Circuit Python with many example sketches. 
• Breadboard friendly.

Check out the GitHub for schematics/code/3D models and more. https://github.com/strid3r21/Bee-Data-Logger