ESP8266-SHT21-HTU21-BMP180-DHT22-Thingspeak-logger

Based on the https://github.com/squix78/esp8266-projects/tree/master/arduino-ide/thingspeak-data-logger

ESP8266 / Wemos D1 mini with BMP180, SHT21 / HTU21 18650 Lipo, Lipo Charger with protection circuit and a BH1750 Sensor. The BH1750 is not visible in the video.

Connection of a DHT22 as an low budget alternative to the SHT21/DHT21 is possible.

To the lipo charger you can connect a 5V or 5.5V solar cell.

Puts up the following values to thingspeak:

• Temperature
• Humidity
• Lux
• Humidex
• Heatindex
• Battery voltage of the node
• Dewpoint
• Pressure

https://www.youtube.com/watch?v=g3ziCE5joGM

Used parts:

Lipo Charger: www.aliexpress.com/item/1Pc-High-Quality-5V-18650-Lithium-Battery-Charging-Board-Micro-USB-1A-Charger-Module-Drop-Shipping/32290456683.html

Enclosure: www.aliexpress.com/store/product/3pcs-Free-shipping-plastic-box-for-custom-made-plastic-enclosure-for-electronic-project-abs-plastic/1352312_2040058036.html

Wemos D1 (ESP8266) www.aliexpress.com/item/D1-mini-Mini-NodeMcu-4M-bytes-Lua-WIFI-Internet-of-Things-development-board-based-ESP8266/32529101036.html

Pressure Sensor: www.aliexpress.com/item/1PCS-GY-68-BMP180-Replace-BMP085-Digital-Barometric-Pressure-Sensor-Module-For-Arduino/32346767511.html

Lux Sensor www.aliexpress.com/item/GY-302-BH1750-BH1750FVI-light-intensity-illumination-module-for-arduino-3V-5V/32341898423.html

Temp/Humidity Sensor HTU21: http://www.ebay.com/itm/181962636668

or

Temp/Humidity Sensor SHT21: http://www.ebay.com/itm/New-SHT21-Digital-Humidity-And-Temperature-Sensor-Module-Replace-SHT11-SHT15-/131156012885

DC StepUp Module: http://www.ebay.com/itm/111851597705

Battery: http://www.ebay.com/itm/Hot-3-7V-6000mAh-18650-Li-ion-Rechargeable-Battery-for-Flashlight-/291618980078

Battery holder: http://www.ebay.com/itm/New-Hot-5Pcs-Battery-Case-Box-Holder-for-18650-Li-ion-Batteries-Cell-3-7V-/252091236855

Resistor: 110k