Johnson Davies built a tiny thermocouple thermometer based on an ATtiny85 measuring boiling water: This project describes a thermocouple thermometer, capable of measuring temperatures up to +1350°C, using just an ATtiny85 and an OLED display. More details on Technoblogy.
sparkybg writes: Soon there will be a new version. The most universal I can think of. Isolated USB connection (HID class) for firmware updates, live data, and PID tunning. Will be able to recognize unlimited number of instruments – can read resistor, 1-wire EEPROM or 1-wire MCU in the connector or handle. When MCU is […]
Sparkybg shared his controller for soldering irons using Hakko T12 type tipe in the project log forum: T12 have thermocouple in series with the heater with a voltage of around 9mV at 450 degrees celsius, so the voltage to the heater must be turned off to measure the voltage of the thermocouple. Don’t measure the resistance […]
Analog Devices has an app note on thermocouple basics, and some guidelines on how to design projects with their AD595 and AD594 thermocouple amplifiers. Temperature is the most frequently measured physical parameter. However, the techniques of temperature measurement are grossly misunderstood, often resulting in serious inaccuracies or meaningless data. Thermocouples are basically two wires made […]
phirephly built a thermocouple with USB and serial interface: This is a device that takes a thermocouple temperature input, converts it into a digital value, and then spits out the temperature on a serial port, which you can then feed into a computer, or another microcontroller. This is a useful device for any time when […]
Armandas has posted his masters project The design is based around a PIC18F66K22 microcontroller. The board has a switching power supply supporting an input voltages of up to 34V, five thermocouple channels, HD44780 LCD interface, a battery backed RTC and a microSD card slot. The control unit interfaces with an electrical system (designed by my […]