A nother commom issue is timekeeping. This little module contains a DS3231 (or DS3232 with RAM) and the backup battery.

Measuring current in a design used to be a bit tricky. But with modern semiconductors this is no more effort than a tiny module with an I2C bus. It only needs three resistors and two capacitors. I used this IC in the Read more

This is a tiny breakout board for the VS1011e MP3 decoder IC. It has all the required components onboard. It measures 25mmx52mm and uses 3V.

Displays are a very important subject in electronics because they provide the way data is presented. Read more

This is a tiny breakout board for the MAX7456 OSD IC. It has all the required components onboard. It measures 17mmx35mm and uses 5V. OSD stands for on screen display. It means using a TV as a display.

This project is a small board containing a CPLD and a SRAM IC. It has an SPI interface to utilize the SRAM. The CPLD is used to implement the SPI interface and address the SRAM.

This module contains a micro SD card, 32Kbyte serial SRAM and an ATmega644 and has the size of a standard SD card.Obviously nowadays any modern CPU can easely drive a sdcard asside process. Read more