ESP8266 Nodemcu with 0.96 OLED Temperature

1. The five key buttons are controlled by FLATH,RSET,D5,D6 and D7 respectively. 2. OLED SDA and SCL received D1 and D2 respectively. 3. Five digital pins can be configured separately the write/read/interrupt/PWM/I2C/one – wire supported 4. 1pc AD input. 5. Integrated 18650 battery charging and discharging system. 6. Micro USB input. 7. Compatible for Arduino. 8. Compatible for NodeMCU. 9. Wide voltage input range 5V~12V. 10. A switch can control the power supply of 18650. 11. 1pc programmable LED(D0). 12. Charging protection, Discharge protection. 13. The design concept originates from the open source project NodeMCU. The development board integrates 18650 charging and discharging systems with a charge and discharge protection, and integrates a OLED and five – direction button to facilitate the development. 14. The operation is consistent with NodeMCU, and a programmable LED is added. It can be controlled by GPIO16 and display the running state of 8266. Integrated with OLED and five key buttons, more convenient for development.