Some time ago I’ve build a prototyping board with graphical LCD. It have served for various small projects and prototypes. Had a spare temperature sensor DS18B20 and decided to put simple temperature display project. GLCD board is equipped with Atmega32 microcontroller running at 16MHz. DS18B20 sensor is connected to port D pin 6. LED connected […]
Temperature sensor with time and date display on graphical LCD Read More »
I’ve had the HobbyKing Rattler for some time now and I’ve been making small modifications here and there which have accumulated over time and has gotten to the point where it would be nice to have everything on a custom PCB. Here’s how everything looks at the moment, pretty messy with kapton tape wrapped around
A thermistor is a type of resistor whose resistance varies significantly with temperature, more so than in standard resistors. NTCtemp is a simple AVR library to read temperature from a thermistor connected to an atmega micro. The library implements three models convert adc value read from analog input to temperature: Steinhart-Hart Thermistor Equation Beta Model Equation Lookup
Reading temperature on AVR Atmega using a thermistor with NTCtemp library 02 Read More »
Temperature monitoring have wide application in daily life. In modern day keeping an eye on temperature of places such as server rooms, hospital rooms, warehouses and green houses can help solve many problems. But with the use of normal temperature sensors, someone needs to go to the place in order to view the temperature. But
Remote Temperature Monitoring using GSM – AVR Project Read More »
Summary 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
Non-Contact Body Temperature Meter Read More »
A device operates OK until it reaches stable operating temperature … a typical situation in praxis usually caused by a faulty component or faulty (cold) joint. Localization of such a fault is easy only if we can cool down (locally) a given component or a given joint. It´s often possible to suppose a source of
Freeze 75 – and you have a temperature under control Read More »
A alimentação é feita por 2 pilhas AAA de 1.2V ( recarregáveis ). A escolha para se usar apenas 2 pilhas AAA é principalmente reduzir ao máximo o peso a transportar pelo helicoptero. Uma vez que 2 pilhas recarregaveis AAA só fornecem 2.4V e é necessário pelo menos 5V para atingir os níveis TTL na
Helicopter Temperature Logger Read More »
A Temperature Controlled DC Fan is a system which automatically turns on a DC Fan when the ambient temperature increases above a certain limit. Generally, electronic devices produce more heat. So this heat should be reduced in order to protect the device. There are many ways to reduce this heat. One way is to switch
Temperature Controlled DC Fan using Microcontroller Read More »
This project uses a Dallas DS1621 temperature sensor which indicates the temparature of the device. The temperature sensor has an thermal alarm output, which becomes high when the temperature of the device exceeds a user defined value. When the temperature drops below a user defined value, the alarm output becomes low. In this way any
Temperature indicator Read More »
This project is based on the timer/counter 0 example. It shows time, date and temparature on 7 segment displays. Instead of the LCD display the time is shown on a four digit 7 segment display with common cathode. The date and temparature is shown on a 7 segment LED display with comon anode. The ATMEGA328
Clock/temperature LED display Read More »
