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Monitor environment by Vincenzo Rivelli.

Features:

• Temperature, Relative humidity, Barometric pressure && Air Quality.
• Low power optimization && battery monitor.
• E-Paper Display.
• ThingSpeak channel over WiFi.

Hardware:

• Adafruit Huzzah ESP8266 ( 3.3volt logic ).
• Adafruit PowerBoost 500 Charger.
• LiPo battery 1800mAh ( EEMB Cell ).
• Adafruit BME688 ( I2C address: Default 0x77, 0x76 with closed bridge ).
• Adafruit LC709203F LiPoly/LiIon Fuel Gauge. ( I2C address fixed: 0x0B ). Need the same power as the logic level of your microcontroller ( 3.3v ).
• Adafruit On-Off Power Button ADA1683 ( Power Switch ).
• Aceinnolab Universal E-Paper driver board for 24-pin SPI.
• GoodDisplay GDEW0097T50 E-Paper Mini 0.97inc 184x88 24pin SPI. Min.FULL upd.: 180sec(3min.), Min.PARTIAL upd.: 5sec.https://www.good-display.com/product/434.htmlhttps://www.good-display.com/news/80.html#precaution
• Acrilic Case.

GPIO Pin map: #0, #2, #4, #5, #12, #13, #14, #15, #16.

• HUZZAH GPIO #16 Pin -> HUZZAH GPIO Rst. Pin. ( For the DeepSleep awake ).
• HUZZAH TX Pin -> UART Cable WHITE.
• HUZZAH RX Pin -> UART Cable GREEN.
• HUZZAH V+ Pin -> UART Cable RED.
• HUZZAH GND Pin -> UART Cable BLACK.
• HUZZAH GPIO #13 Pin -> E-Paper driver SPI SDI.
• HUZZAH GPIO #14 Pin -> E-Paper driver SPI CLK.
• HUZZAH GPIO #2 Pin -> E-Paper driver SPI CS.
• HUZZAH GPIO #15 Pin -> E-Paper driver SPI DC.
• HUZZAH GPIO #0 Pin -> E-Paper driver SPI RST.
• HUZZAH GPIO #12 Pin -> E-Paper driver SPI BUSY.
• HUZZAH GPIO #4 Pin (i2c SDA) -> BME688 SDI Pin -> LC709203F SDA Pin (JST-SH Blue).
• HUZZAH GPIO #5 Pin (i2c SCL) -> BME688 SCK Pin -> LC709203F SCL Pin (JST-SH Yellow).

Power management:

• Charging time: 6 hours and 15 minutes. (Yellow LED (near pins): Charging; Green LED (near screw): Charge complete).
• Autonomy: 11 days 4 hours and 40 minutes. ( SLEEP_TIME = 5m ).