# How do you handle analog sensors? I wan to

**URL:** <https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372>\
**Category:** Industrial\
**Created:** [13 February 2026 16:54 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372 "2026-02-13T16:54:31Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![mudwalker](https://avatars.discourse-cdn.com/v4/letter/m/47e85d/32.png) [@mudwalker](https://discourse.nodered.org/u/mudwalker)\
**Post date:** [13 February 2026 17:45 UTC](https://discourse.nodered.org/t/how-do-you-handle-analog-sensors-i-wan-to/100372/3 "2026-02-13T17:45:22Z")

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You have cross posted and already have assistance from @TotallyInformation . Please keep to the one Topic, it save any confusion.

> [@Analog sensor -\> ESP Home -\> MQTT -\> Node Red](https://discourse.nodered.org/t/analog-sensor-esp-home-mqtt-node-red/100374/2):
>
> Most of (maybe all?) the microprocessors supported by ESPHome support analogue inputs: ESP8266 : Only GPIO17 (A0) can be used for ADC input. You can also measure VCC voltage directly by setting pin: VCC , useful for low-voltage detection in battery-powered setups. ESP32 : Multiple pins support ADC (e.g., GPIO32–GPIO39 for ADC1, GPIO0, GPIO2, GPIO4, etc. for ADC2). Use attenuation to measure voltages above 1.1V (e.g., 12dB for up to ~3.9V). RP2040 (Raspberry Pi Pico) : GPIO26–GPIO29 are availab…

@Steve-Mcl Posted while I was replying - sorry.

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