This code is written for use with an ESP8266, a DHTXX (humidity), a DS18B01 (temp), a logic output PIR sensor (motion), and a logic input beeper. Upon bootup it connects to the Blynk server and periodically uploads temp and humidity based on continuously averaged sensor data. It continuously reads the PIR sensor and displays it's status on an app LED widget. If the PIR goes active and an app "ARM" button is enabled, the code will beep the beeper twice and send a notification.
Firmware is Browser OTA upgradeable, and as non-blocking as possible. However no modifications were done to the included libraries, which may contain some lines of blocking code.
| V-pin | Data |
|---|---|
| V0 | Firmware Upload Button [0 = normal, 1 = upload] |
| V1 | Alarm Arm Button |
| V2 | Alarm Status LED |
| V3 | Alarm Trigger Count |
| V4 | Temperature 1 - Dallas [F] |
| V5 | Relative Humidity [%] |
| V6 | Heat Index [F] |
| V7 | Dew Point [F] |
| ESP pin | Connect to |
|---|---|
| io13 | PIR output pin |
| io12 | DHT sensor data pin |
| io14 | Dallas temp sensor (non-parasitic power) |
| io16 | Beeper (w/ NPN... high = beep) |
| io0 | 4k7 High (Low = UART flash bootloader) |
| io2 | 4k7 High |
| io15 | 4k7 Low |
| EN | 4k7 High |
| RST | 4k7 High |