Home Automation with MicroPython, the ESP8266 and Google Home

In this IoT talk we will demo a home automation project by wiring up a switch to an ESP8266, write and load a MicroPython web service on the hardware, link it to Home Assistant.

This is a live hardware build and coding session. All hardware will be locally sourced, the instructions and code will be on GitHub.

https://github.com/dalehumby/DevFest2020

Transcript

1. Home Automation with MicroPython, the ESP8266 and Google Home Dale Humby CTO, Nomanini Google Cloud Developer Expert
2. Smart Home
3. Smart Home
4. Level 1: Getting Started
5. Get started: Switch a lamp on
6. R120 communica.co.za Get started: Switch a lamp on
7. R120 communica.co.za Get started: Switch a lamp on
8. R120 communica.co.za Get started: Switch a lamp on
9. R120 communica.co.za Get started: Switch a lamp on
10. R120 communica.co.za Get started: Switch a lamp on
11. R120 communica.co.za Get started: Switch a lamp on
12. Get started: Switch a lamp on WiFi
13. Get started: Switch a lamp on WiFi Internet
14. Get started: Switch a lamp on WiFi Internet
15. Level 2: Open Source
17. tasmota.github.io/docs/Getting-Started/
18. tasmota.github.io/docs/Getting-Started/ R80 communica.co.za/products/bmt-ftdi- usb-to-ser-converter
19. tasmota.github.io/docs/Getting-Started/ R80 communica.co.za/products/bmt-ftdi- usb-to-ser-converter
20. R1,400 communica.co.za
21. WiFi
22. WiFi
23. WiFi
24. WiFi Internet
25. Raspberry Pi 4 vs Odroid C4
27. Price ±R1,400 1.5 - 2 GHz CPU 4 GB RAM Gigabit Ethernet Low power < 5W 40 PIN GPIO
28. 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!
29. 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
30. Home Automation Software Stack
36. 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
39. Because micro-SD cards fail
40. github.com/dalehumby/rpi-provision + Ready-made images on Docker Hub Because micro-SD cards fail
54. github.com/dockersamples/docker-swarm-visualizer
55. Level 3: Build your own hardware
56. How much prepaid electricity do I have left? Where is all my electricity going?
57. kWh remaining
58. kWh remaining 1,000 flashes per kWh
59. kWh remaining 1,000 flashes per kWh “API... what?”, said Plessey
60. 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
61. 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
62. 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
63. 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
64. https://en.wikipedia.org/wiki/ESP8266 https://www.espressif.com/ ESP8266 From Espressif Systems ... The Arduino killer
65. 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”
70. Let’s get coding
72. Putting it all together
73. github.com/dalehumby/powermeter
74. github.com/dalehumby/powermeter
75. github.com/dalehumby/powermeter
76. github.com/dalehumby/powermeter
77. Beyond
79. Swarm mode: Natively managing a cluster of Docker Engines
81. k3s.io Lightweight kubernetes
82. k3s.io Lightweight kubernetes PXE / Network boot worker nodes
83. k3s.io Lightweight kubernetes PXE / Network boot worker nodes
84. TensorFlow Lite coral.ai/products/dev-bo ard-mini $99 nvidia.com/en-us/auton omous-machines/jetson- store/ $99 dog
86. home-assistant.io/integrations/google_assistant/
87. home-assistant.io/integrations/google_assistant/
88. 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 dale@nomanini.com dalehumby.com We’re hiring nomanini.com/careers