Tag Archives: temperature

ATmega Alarm Clock & Thermometer Humidity meter


nitram147 @ instructables.com has build a ATmega based alarm clock with temperature and humidity reading. Sensor used is DHT11.

First, let me introduce you my project. I made an Alarm clock with extended functionality & thermometer and humiditymeter. Everything started when my friend (who used to bring me some old electronic rubbish and I used to check if there’s not something useful) brought me some cashing register display similar like that. When I first see them I knew that I will made from it alarm clock.

ATmega Alarm Clock & Thermometer Humidity meter – [Link]

Temperature Monitor with ESP8266


anistor @ instructables.com has build an ESP8266 based temperature monitor system using DS18B20 sensor.

This project will help you create a temperature monitor using an ESP8266 SoC and a temperature sensor (DS18B20) with next capabilities:

Measure Temperature
Send an email if temperature goes under a threshold
Monitor temperature and set threshold from a mobile App

Temperature Monitor with ESP8266 – [Link]

HDC1050 – low power Humidity and Temperature sensor


The HDC1050 from Texas Instruments is a tiny 3 mm square combined humidity and temperature sensor. It can operate from a supply rail of 3 to 5 V and offers an accuracy of ±3 % on relative humidity measurement and ±0.2 ºC on temperature measurements. The typical supply current is 1.2 µA while operating at one sample per second and 100 nA in sleep mode.

HDC1050 – low power Humidity and Temperature sensor – [Link]

Build a Simple Toaster Oven Temperature Profile Controller


Maurizio @ dev.emcelettronica.com has tipped us about his latest project. In this article he discuss how to build a simple toaster oven temperature profile controller using StickOS and CPUStick. This is the first part of the article.

Using a highly-integrated microcontroller running “StickOS BASIC”, it is possible to quickly build a toaster oven temperature profile controller for performing surface mount (SMT) printed circuit board reflow soldering at home. It is also possible to program a large variety of other general-purpose embedded system projects with minimal software effort, using only a terminal emulator and high-level BASIC algorithmic statements to manipulate the microcontroller (MCU) pins and peripherals.

Build a Simple Toaster Oven Temperature Profile Controller – [Part 1] [Part 2]

Raspberry PI and DHT22 Temperature and Humidity logger


“jjpfin” @ instructables.com build a Raspberry Pi based temperature and humidity datalogger using DHT22 sensor. Data is stored on mySQL server and can be viewed on browser.

This is an Raspberry Pi based temperature and humidity logger that uses 2 (works also with 1) Adafruit DHT22 sensors for measurements. You might have seen similar kind of instructions before, but this one has a twist. It doesn’t just read temperature and humidity from sensors, but it stores data to MySql database and provides means to read that temperature data with any web enabled device (computer, phone, tablet) web browser.

Raspberry PI and DHT22 Temperature and Humidity logger – [Link]

Non-Contact Body Temperature Meter

One of the most commonly used medical instruments nowadays is the thermometer. The thermometer is used to monitor or measure the body temperature of a sick person. The idea of creating a thermometer started from a device called thermoscope, a thermometer without a scale. Several inventors developed it until Sir Thomas Allbutt invented the first practical 6-inch medical thermometer able to sense a body temperature in five minutes. The development of the thermometer did not stop there and today, digital thermometer exists which is faster and very accurate.

This reference design is an example of a low cost non-contact digital thermometer. It only uses a microcontroller, a four digit seven segment display and an infrared (IR) temperature sensor. The concept of this design is to make the IR sensor measure the temperature of the thermal radiation emitted by the body being measured. The data acquired by the sensor will be sent to the microcontroller through the I2C bus. The microcontroller will analyze the data and then shows the body temperature on the four-digit seven-segment display.

The circuit of this reference design uses few components only and is very easy to understand. However, to make the circuit function accurately, software calibration must be implemented carefully. The whole circuit is powered by a 5V DC power supply regulated from the four 20mm coin shape batteries contained in a 120591-1 TE Connectivity battery holder. The batteries are connected in series-parallel connection to produce a 6V 480mAh source of power. With the help of a low-dropout voltage regulator, the 6V is regulated to a 5V DC supply

Non-Contact Body Temperature Meter – [Link]

The MCP9600 Thermocouple interface


by Martin Cooke @ elektormagazine.com:

The MCP9600 from Microchip is a single chip solution to convert thermocouple output EMF to degrees Celsius. The chip includes integrated cold-junction compensation and corrects thermocouple non-linearity for the eight most popular types of thermocouple.

User-programmable registers in the MCP9600 allow the chip to be configured for various applications including a low-power mode for battery operation and adjustable digital filter characteristics for fast-changing transient temperature sensing. There are also four programmable temperature alert outputs which can be used to detect multiple temperature zones.

The MCP9600 Thermocouple interface – [Link]

Record from SOS webinar – Everything you have ever wanted to know about Physics of Humidity

Accuracy in a whole range of relative humidity measurement? You could find out during Sensirion webinar. Did you miss our webinar? Watch the video – record…

What´s possible and what not in the temperature and humidity measurement? Design Guidance & Handling Instructions for your applications and products and also application examples. All of this was led by Maximilian Eichbereger from Sensirion.All participants of the webinar could get development kit EK-H5 for special price and as a bonus could get the SHT31 reference design (functional board) for FREE.

Record from SOS webinar – Everything you have ever wanted to know about Physics of Humidity – [Link]