13.07.2018 | WiFi Data Logger |
| WiFi Data Logger using ESP 8285 M1/M2 module , with RTC, UID, Analogue switch and data line voltage shifter. |
18.10.2018 | 5V Battery Power Source |
| 5V Battery Power Source using Li-Ion or Li-Po battery with 18650 battery holder, 3.7 to 5V DC-DC converter, and TP4056 charger control, DW01 protection circuit. Additionally 3 analog measure output wich measure input, battery and output voltage. |
12.07.2018 | I2C interface to SparFun Meteo Station |
| I2C interface board to SparkFun Meteo station using ATMEGA328P with UID, rain drop, UV and light sensors. I2C line have voltage shifter. |