Say hello to the ST25DV I2C/NFC EEPROM. We saw a library for the ST25DV was released by STM32duino’s team and took a look at this interesting chip! It has both NFC (Type V) and I2C interfaces, you can write the EEPROM over I2C, then read it from NFC – it even has some fast-message-passing capability that could be used for wireless near-field data transfer. Comes in 4 sizes: ST25DV04K, ST25DV16K, and ST25DV64K.
Nifty stuff! We whipped up a little STEMMA QT compatible breakout to play with this chip. You can also pick up these wireless EEPROMs over at Digi-Key.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.