Ondo - Thermometer
source

Ondo - Thermometer

(13)
Price
$1.99
Category
Utilities Education
Last update
Sep 06, 2021
Publisher
SCB Associates Ltd Contact publisher
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Ratings & Reviews performance

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Number of reviews,
total
13
Avg rating,
total
⭐2.0
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User Reviews for Ondo - Thermometer

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Description

1639 chars

Measure indoor room temperature using your iPhone or iPad and headset (required). Ondo® is an experimental acoustic thermometer implemented using an iPhone (or iPad) and headset. Acoustic thermometers utilise the principle that the speed of sound in air changes with temperature; by measuring the speed of sound it is possible to calculate air temperature. How it works? Ondo® transmits a high frequency sound from the headset earpiece. This sound is received by the microphone positioned a short, fixed distance from the earpiece. The time taken for the sound to travel between the earpiece and the microphone is very accurately measured to less than a millionth of a second. What you will need to build your acoustic thermometer: • Standard Apple headset (EarPods with lightning connector) • Old credit or debit card (to provide a base) • Four elastic bands (to hold the right earpiece and microphone in position) • iPhone or iPad with Ondo® installed Getting started: • Follow the simple instructions in the app (or on the website www.ondo.app) to build your headset thermometer • Calibrate to the starting temperature and your thermometer is ready to use • Move the phone and headset to a different temperature zone e.g. take it outside or move nearer to a heater and watch the reading change Specification: • Temperature range -40 to 50 degrees Celsius • Accuracy +/- 1 degree (dependent upon headset fixing) PLEASE NOTE - This app will only work with a headset connected and set up according to the instructions in the app. Please do not buy this app if you do not have a suitable headset. This app will not work with AirPods.

Screenshots

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