1.1602 screen for 1602,I2C control more convenient,
2. The new key chain and white CARDS, RFID module and RFID,
3. The DS1302 clock module has been added,
4. A new voice detection module,
5. Temperature humidity module has been added,
6. Water level detection module has been added,
7. 4 * 4 button module has been added,
8. 8 * 8 dot matrix module has been added.
