Environmental exposure risk measuring device based on ESP32, ultraviolet light (UV) and CO2 gas sensor modules. It has a voltage booster based on MT3608 chip and a solar panel lithium battery charger with MPPT based on CN3791 chip.

To power the Raspberry Pi from solar panels or a lifepo4 battery, an efficient ultra-low power boost converter with battery management is used to generate power BQ25504RGTT

A buck boost converter that can be powered from a Li-Ion battery and output 3.3V @ 500mA. Powered by the TPS63051YFFR and in the same package as a standard Adafruit buck converter. Expect to squeeze around 5-10% SoC from a typical Li-Ion battery. Input Voltage Range: 2.5V to 5.5V Assembled at pcbway.com

+5V to ±12V DC-DC converter

This is a LoRa-based door and window sensor incorporating a microcontroller unit (MCU). It features a reed sensor, LED indicators, a AAA non-rechargeable battery, and a booster IC for constant voltage. The MCU is linked to peripherals through nets, ensuring optimal performance #LoRa #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #seeed #seeed-studio #template #reference-design

XL6009 Boost Module DC-DC Adjustable Module DC3.0-30V to DC5-35V Output Voltage Power Converter Circuit Board Module 400KHz https://www.amazon.com/HiLetgo-Adjustable-DC3-0-30V-DC5-35V-Converter/dp/B07BNHR4HW/ref=sr_1_3?dchild=1&keywords=XL6009&sr=8-3

A buck boost converter that can be powered from a Li-Ion battery and output 3.3V @ 500mA. Powered by the TPS63051YFFR and in the same package as a standard adafruit buck converter . Input Voltage range : 2.5V to 5.5V

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