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Discover leading temperature sensors for Arduino, Raspberry Pi, and maker projects. Compare models, see local stock, and get expert hobbyist advice from Communica.
See pros, cons, and specs for popular temperature sensors used in hobby designs.
Find out which models are commonly stocked in South Africa with fast local support.
Learn to select, wire, and troubleshoot sensors for your microcontroller projects.
Temperature sensors are essential components for weather stations, home automation, aquariums, 3D printers, environmental monitoring, and countless DIY electronics applications. For South African makers, choosing the right sensor means balancing accuracy, cost, wiring simplicity, and what's locally available. This guide compares the best options, explains how to select and use them, and shares practical prototyping advice.
The most common temperature sensors for hobby projects fall into these categories:
| Model | Type | Accuracy | Range ( degreesC) | Interface | Notes |
|---|---|---|---|---|---|
| DS18B20 | Digital IC | 0.5 | -55 to +125 | 1-Wire | Waterproof versions, addressable |
| DHT22 | Digital Sensor | 0.5 | -40 to +80 | Single-wire | Also reads humidity |
| LM35 | Analog IC | 0.25 | -55 to +150 | Analog Vout | Good for Arduino, direct readout |
| NTC 10k Thermistor | Resistive | 1 | -55 to +125 | Analog (voltage divider) | Low-cost, requires calibration |
| BME280 | Digital IC | 1 | -40 to +85 | I2C/SPI | Measures temp, humidity, barometric pressure |
Here's how you might wire two of the most common sensors:
Vout = Vcc x (RB / (RT + RB))
Use the Steinhart-Hart equation (available in many Arduino libraries) for more precise readings when converting resistance to temperature.
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I visit Communica once in a blue moon. Always wish i have more time to look at everything. Good & friendly service. Nothing wrong with a queuing syste...
Currently have only purchased items from their on-line store. Received what I ordered plus quick delivery. No complaints to date.
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I got the most pleasant service from Sydney and Windie
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Verified customerFor Sonoff ewelink WiFi switch.
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Verified customerBig electronic component shop. Counter can be very busy. Lots of parking.
Verified customerClose to closing time so i was in and out quickly
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Verified customerExcellent service Nicole
Verified customerLarge selection, low on staff during lunch time when they are busy.
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Verified customerGood range of products
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Verified customerLarge number of electronic components
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Verified customerWaiting time can be annoing.
Verified customerCommunica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.
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