ADC MCP3008 Analog sensors to MQTT on rpi - suiluj/pi-adhoc-mqtt-cluster GitHub Wiki

ADC MCP3008 Analog sensors to MQTT on rpi

Read analog sensor values and send them with mqtt.

Activate SPI

sudo raspi-config
Interface options
Activate SPI
Reboot raspberry pi

Install gpiozero

https://gpiozero.readthedocs.io/en/stable/installing.html

sudo apt install python3-gpiozero

http://www.takaitra.com/posts/492

lm 335 to 92

Resistor!
https://electronics.stackexchange.com/questions/1358/what-is-the-minimum-supply-voltage-for-an-lm335

http://www.learningaboutelectronics.com/Articles/LM335-temperature-sensor-circuit.php

http://www.ti.com/lit/ds/symlink/lm135a.pdf
http://www.ti.com/product/LM335#

Sources

• Old: MCP3008: Am Raspberry Pi analoge Signale auslesen
• GPIO Zero - API - SPI Devices
• Using MCP3008 to measure temperature with GPIO Zero and RasPiO Pro Hat
• Raspberry Pi Website - SPI