Supnova Battery Capacity Indicator DC 8V-100V

Easy Calibration:Features an adjustable potentiometer for error calibration, enhancing reliability. User-Defined Settings:Customizable high and low voltage range for personalized battery monitoring.

Micro SD TF Memory Card Reader Module with SPI Interface For Arduino

This MicroSD TF (TransFlash) card reader and writer includes 3.3V regulator and level shifters, making it safe to interface with most 5V and 3.3V microcontrollers, including Arduino and Arduino-compatible microcontrollers. It features an SPI interface for communication and is compatible with the standard Arduino SD card library. The Arduino IDE (with the Arduino SD Library installed) will interface directly with this module to create files and read/write to them, and to move through directories on the SD card. This module can be used with other microcontrollers using the SPI interface, however, we recommend using it with the Arduino IDE because of its SD card library support.