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lm35_adc


 Boards

Raspberry Pi 2, 3

Description

Interface Raspberry Pi with MCP3008 for ADC functionality.
LM35 temperature sensor is connected to CH1 of MCP3008.
MCP3008 is powered with 3.3V.
If environment variable TS_API_KEY is set, data is sent to
the ThingSpeak IoT cloud. REST API is used.

lm35_adc_mqtt


 Boards

Raspberry Pi 2, 3

Description

Interface Raspberry Pi with MCP3008 for ADC functionality.
LM35 temperature sensor is connected to CH1 of MCP3008.
MCP3008 is powered with 3.3V.
If environment variable TS_API_KEY is set, data is sent to
the ThingSpeak IoT cloud. MQTT is used.