Home Automation with MicroPython, the ESP8266 and Google Home

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Home Automation with MicroPython, the ESP8266 and Google Home Dale Humby CTO, Nomanini Google Cloud Developer Expert

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Smart Home

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Smart Home

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Level 1: Getting Started

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Get started: Switch a lamp on

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R120 communica.co.za Get started: Switch a lamp on

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R120 communica.co.za Get started: Switch a lamp on

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R120 communica.co.za Get started: Switch a lamp on

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R120 communica.co.za Get started: Switch a lamp on

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R120 communica.co.za Get started: Switch a lamp on

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R120 communica.co.za Get started: Switch a lamp on

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Get started: Switch a lamp on WiFi

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Get started: Switch a lamp on WiFi Internet

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Get started: Switch a lamp on WiFi Internet

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Level 2: Open Source

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tasmota.github.io/docs/Getting-Started/

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tasmota.github.io/docs/Getting-Started/ R80 communica.co.za/products/bmt-ftdi- usb-to-ser-converter

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tasmota.github.io/docs/Getting-Started/ R80 communica.co.za/products/bmt-ftdi- usb-to-ser-converter

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R1,400 communica.co.za

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WiFi

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WiFi

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WiFi

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WiFi Internet

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Raspberry Pi 4 vs Odroid C4

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Price ±R1,400 1.5 - 2 GHz CPU 4 GB RAM Gigabit Ethernet Low power < 5W 40 PIN GPIO

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Price ±R1,400 1.5 - 2 GHz CPU 4 GB RAM Gigabit Ethernet Low power < 5W 40 PIN GPIO Debian 10 / Raspberry OS Onboard WiFi + Bluetooth LE 2x mini-HDMI 2x USB2 + 2xUSB3 5V USB type-C Needs heatsink!

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Price ±R1,400 1.5 - 2 GHz CPU 4 GB RAM Gigabit Ethernet Low power < 5W 40 PIN GPIO Debian 10 / Raspberry OS Onboard WiFi + Bluetooth LE 2x mini-HDMI 2x USB2 + 2xUSB3 5V USB type-C Needs heatsink! Ubunt 20.04 / Android 9 1x full-size HDMI 4x USB3 Voltage range 5-17 V

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Home Automation Software Stack

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Home Assistant: Home automation Mosquitto MQTT broker: Pub/Sub protocol Prometheus: Time series database Grafana: Visualisation Node-Red: Flow-based software control Home Automation / IoT Stack

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Because micro-SD cards fail

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github.com/dalehumby/rpi-provision + Ready-made images on Docker Hub Because micro-SD cards fail

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github.com/dockersamples/docker-swarm-visualizer

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Level 3: Build your own hardware

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How much prepaid electricity do I have left? Where is all my electricity going?

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kWh remaining

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kWh remaining 1,000 ﬂashes per kWh

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kWh remaining 1,000 ﬂashes per kWh “API... what?”, said Plessey

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1,000 ﬂashes per kWh LDR sensor (R20) https://www.communica.co.za/products/bmt-ambient-light-sensor D1 Mini (R85) https://www.communica.co.za/products/bmt-esp8266ex-nodemcu-wiﬁ-board Screen Scrapers for Hardware Hackers

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1,000 ﬂashes per kWh ESP8266 D1 Mini LDR sensor (R20) https://www.communica.co.za/products/bmt-ambient-light-sensor D1 Mini (R85) https://www.communica.co.za/products/bmt-esp8266ex-nodemcu-wiﬁ-board Screen Scrapers for Hardware Hackers

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https://en.wikipedia.org/wiki/ESP8266 https://www.espressif.com/ ESP8266 From Espressif Systems ... The Arduino killer

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https://en.wikipedia.org/wiki/ESP8266 https://www.espressif.com/ ESP8266 From Espressif Systems ... The Arduino killer 32-bit CPU 80 MHz clock 160 kB RAM + 4 MB Flash Integrated WiFi + TCP/IP stack 16 GPIO pins / I2C / SPI / UART / ADC Cheap - used “everywhere”

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Let’s get coding

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Putting it all together

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github.com/dalehumby/powermeter

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github.com/dalehumby/powermeter

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github.com/dalehumby/powermeter

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github.com/dalehumby/powermeter

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Beyond

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Swarm mode: Natively managing a cluster of Docker Engines

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k3s.io Lightweight kubernetes

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k3s.io Lightweight kubernetes PXE / Network boot worker nodes

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k3s.io Lightweight kubernetes PXE / Network boot worker nodes

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TensorFlow Lite coral.ai/products/dev-bo ard-mini $99 nvidia.com/en-us/auton omous-machines/jetson- store/ $99 dog

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home-assistant.io/integrations/google_assistant/

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home-assistant.io/integrations/google_assistant/

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Resources MicroPython docs.micropython.org/en/latest/esp8266/tutorial/intro.html Home Assistant home-assistant.io Mosquitto MQTT mosquitto.org Where to buy {hardware} Communica communica.co.za Build Actions on Google Assistant codelabs.developers.google.com/codelabs/actions-1 Dale Humby github.com/dalehumby [email protected] dalehumby.com We’re hiring nomanini.com/careers