Adafruit
Adafruit TMP235 - Plug-and-Play STEMMA Analog Temperature Sensor - TMP235
The Adafruit TMP235 is a plug-and-play analog temperature sensor with a 3-pin JST PH (STEMMA) connector. Unlike I2C sensors, this one outputs a simple analog...
The Adafruit TMP235 is a plug-and-play analog temperature sensor with a 3-pin JST PH (STEMMA) connector. Unlike I2C sensors, this one outputs a simple analog voltage proportional to temperature — just connect it to any microcontroller with an analog input and read the value. No libraries or complex configuration required.
The sensor measures from –50°C to +125°C, outputting 0V at –50°C and 1.75V at +125°C. Converting to temperature is straightforward: Temp °C = 100 × (reading in V) – 50. It runs on 3V to 5V and connects via any 3-pin JST PH cable — red to power, black to ground, white to analog input.
Key Features
- Analog Output – Simple voltage output proportional to temperature, no libraries needed
- –50°C to +125°C Range – 0V at –50°C, 1.75V at +125°C
- 3-Pin JST PH (STEMMA) Connector – Plug-and-play connection with compatible cables
- 3V to 5V Operation – Compatible with a wide range of microcontrollers
- Easy Calculation – Temp °C = 100 × (voltage) – 50
Ideal For
- Simple temperature monitoring projects
- Quick prototyping with analog inputs
- Upgrading from the TMP36 with a plug-and-play connector
- Projects where I2C is unavailable or unnecessary
Package Contents
- 1× Adafruit TMP235 Analog Temperature Sensor (with JST PH connector)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- JST PH
- A small keyed plug-and-socket connector with 2 mm pin spacing, often used for low-power electronics connections. You need the correct JST PH cable, and its current rating limits how much power should be passed through it.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- pH
- A measure of how acidic or alkaline a liquid is, on a scale where 7 is neutral. For a water monitoring kit, pH tells you about water chemistry and whether the included probe matches the range and accuracy your project needs.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
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