The firmware is open source at: https://github.com/Giftia/NAFUTURE

Suitable for the ESP8266 temperature and humidity detector sold by Lao Wang next door:

Instructions for use:

• 1. Use M-TTL programmer or third-party TTL connection light and future temperature and humidity sensor meter (hereinafter referred to as the device);
• 2. Press and hold the FLASH button on the M-TTL writer and turn on the device switch. You should be able to observe that the blue indicator light of the device is dimly lit and enters the burning mode;
• 3. Use Arduino IDE with the corresponding library installed to open this project, and modify the ssid and password in lines 25 and 26 to be your own WiFi;
• 4. Click ESP8266 Sketch Data Upload in the menu - Tools to flash SPIFFS, and then repeat the second step after waiting;
• 5. Click Upload, and then restart the device after waiting;
• 6. Turn on the WiFi on your computer or mobile phone and connect to a WiFi with a name similar to ESP_1A2B3C;
• 7. Use a browser to access 192.168.4.1, check the local IP address displayed on the page, and then switch to your own WiFi;
• 8. Access the local IP address shown above to view the data page on the LAN. After entering sleep state, the device will wake up after 1 hour for 10 minutes.

Thanks for supporting the finished product: https://item.taobao.com/item.htm?id=638998843446