Cellular IoT Monitor  

Transmit sensor data from remote locations without internet. Transfer data to email, text, Google Sheets, IFTTT, Home Assistant, and more.

How It Works

An inexpensive IoT SIM card gains access to the cloud via a cellular connection.

The HUB connects to the cellular network or wifi or both.

The HUB can operate as a stand-alone unit with its own sensors.

The HUB can also collect data wirelessly from separate sensor platforms.

The hub software - AmbientHUB - and the sensor software - AmbientAP - are written in C++ with the using the Arduino IDE.

The AmbientHUB software controls an ESP32 micro-controller connected with onboard sensors and an optional OLED display.

Hands on Technology presentation of 2/2/2022

Available in the doc folder (see Cellular IoT Homewatch.pdf).
Additional development since then is reflected below and in the software.

Tested With

• Botletics SIM7000A cellular modem Arduino shield

• LiLLYGO SIM7000G board with integrated ESP32 Wrover

  

• and-global SIM7000A module

Supported Protocols

The AmbientHUB software can receive the AmbientAP sensor data using the listed protocols.

• http where each sensor is configured as a server which can be polled by the hub using a GET command.

• ESP-Now a lighter footprint protocol by which the sensors push the data to the hub based on its MAC address. https://www.espressif.com/en/products/software/esp-now/resources

Formatting Options

The AmbientHUB software collects the sensor values for hourly transmission via the Hologram IoT cellular platform to the listed website services.

Supported Services via Cellular

• https://io.adafruit.com/ MQTT for dashboard and redundant IFTTT webhook route

• https://ifttt.com/ for notifying to up to 20 email accounts plus Google sheets

• https://dweet.io/ which simply saves the messages in scratchpad format

Supported Services via Wifi

• Home Assistant or any MQTT Broker using a local wifi router

• Telegram for tailored commands

Threshold Alert

The AmbientHUB software provides
immediate alerts when sensors cross adaptive thresholds.

Builtin Modules

• An ESP32 or a D1 Mini 8266 micro-controller

• temperature / humidity sensors BME-280, MCP9808, DHTxx, AHT10, SHT20

• An optional SSD1306 OLED display https://www.amazon.com/gp/product/B07W1PT6VK

• door / window sensors

• illumination sensors

• flood sensors

• PIR/ motion Sensors

• HC-SR04 or HC-SR04P Ultrasonic sensor

• DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler