Description Features: Measures temperatures from -55°C to +125°C Three LED’s to indicate in what range the temparature is. User definable thermostat with high and low settings Output via a relay to control a heater element or a blower fan (or something else) Power supply ………………….4.5 to 5.5 VDC Power consumption ………..15mA This circuit uses a Dallas …
Temperature Indicator Using attiny2313 micrcontroller Read More »
I really like nixie and numitron clocks, but I never worked with them before. So I decided to give it a go. I choose numitrons because of 2 reasons: first of all nixies need a higher voltage than numitrons to work. Nixies need around 170V DC and numitrons only 4,5V so they are safer to work …
Numitron clock & thermometer using Microcontroller atmega48 Read More »
This instructable will show you how to make a thermometer that displays the temperature of the air. It’s not the most accurate thermometer in the world, but for this price and the fact that it was homemade… This instructable will show you how to make a thermometer that displays the temperature of the air. It’s …
In this Instructable, I will step through controlling the temperature of most kitchen appliances. As an example, I will use an old Westbend Poppery popcorn maker (aka. coffee roaster), but these same techniques will be applicable to most hot plates, coffee makers, and waffle irons. This instructable puts you at risk of electrocuting or burning …
Temperature Control For Kitchen Appliances Using Atmega Read More »
I’ve always been interested in monitoring my local weather, and noticed the difference between what weather.com and accuweather.com think my local weather is, and what I see out the window. I also wanted better control over my heating and A/C system. As a computer and electronics nut, I’ve been playing with the Arduino Microcontroller, and decided …
The Arduino Weather Station / Thermostat using ATmega328 microcontroller Read More »
Controlling temperature has been a prime objective in various applications including refrigerators, air conditioners, air coolers, heaters, industrial temperature conditioning and so on. Temperature controllers vary in their complexities and algorithms. Some of these use simple control techniques like simple on-off control while others use complex Proportional Integral Derivative (PID) or fuzzy logic algorithms. In …
In one of my previous posts, I discussed about Sensirion’s SHT11 and SHT75 sensors, which are capable of measuring both temperature and relative humidity. They are digital sensors and provide fully calibrated digital outputs for temperature and relative humidity. I also illustrated how to interface those sensors with a PIC microcontroller. Shawon Shahryiar from Dhaka, Bangladesh shared this project …
Atmega8 measures ambient temperature and relative humidity using HSM-20G sensor Read More »
This project describes how to use all the 8 ADC channels of an Atmega48 microcontroller to read temperature sensors and the measured data to a PC for logging by using the built-in USART capabilities of the chip. For demonstration, the temperature sensor used is LM335 that gives an output voltage proportional to the Kelvin temperature. …
Multi-channel temperature logger using Atmega48 microcontroller Read More »
This project uses Atmega168 microcontroller to compute the power usage at home and logs it to an SD card. It has a graphical LCD display too that shows the power usage as a strip chart. Besides, the voltage and current waveforms can also be displayed on the LCD. Read more: Power usage monitor using Atmel …
Power usage monitor using Atmel AVR using Atmega168 microcontroller Read More »
The open source project allows you to control DC appliances based on the temperature of two thermistor inputs. It uses AVR ATmega48 as main processor. The controller has both green and white LEDs to indicate status. The project output is connected to N-Channel MOSFET, AOD444, for switching with current up to 4A. For higher current you can use relay. …
Open Source AVR Temperature Controller using ATmega48 microcontroller Read More »
