My version/layout of MT3608 DC-DC Step Up Converter Booster for my Lipo Charger Arduino Shield

3.7V Lipo Charger. Interfaces with MT3608 Boost Converter to convert 3.7V to 5V. Slot on top of your Arduino and charge your battery while the Arduino is plugged in. Or run your Arduino portably using the battery.

Wearable Industrial Safety Monitor — STM32C011 + ESP8266, IMU/environment/microphone sensing, RGB/vibration alerts, LiPo/AP7361 power, 70 mm × 50 mm 2-layer PCB with bottom GND plane.

3.3V LiPo-Powered UWB Sensor Node: XIAO ESP32S3 & RyUwb_lite Integration