Thermocouple Temperature Meter

AVR Thermocouple Temperature Meter using ATmega164 microcontroller

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The benefit using thermocouple sensor for measure temperature is it has wide range measurement (-200 °C to +1350 °C / -328 °F to +2462 °F range for Type K), inexpensive, interchangeable, and is supplied with standard connectors. To get temperature value from output of a thermocouple, you need high precision amplifier and proper compensation circuit due to

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High Voltage Programmer1

AVR High Voltage Programmer Using Arduino AVR microcontroller Using Atmega

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AVR microcontroller uses fuse bits to set its operational parameters like watchdog timer settings and change speed of the internal oscillator. Most fuse bits can be set or reset without worry. You can flash it into one state and then flashed back again using an SPI programmer. However, some fuse bits like RSTDISBL fuse are

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ESR Meter

AVR Wide Range LC,F, ESR Meter using AVR ATMega88PA-PU microcontroller

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LCFesR meter is a precise, wide range meter that can measure inductivity (L), capacity (C), frequency (F) and equivalent series resistance of a capacitor in-circuit (ESR) based on AVR ATMega88PA-PU microcontroller. It can be easily built with homemade one or double-faced PCB and available electronic components. dr. Le Hung, project designer, explained that measurement of ESR can be done continuously,

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Rechargeable Battery Capacity Tester

Rechargeable Battery Capacity Tester using ATMega168 microcontroller

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This ATMega168-based battery tester allows you to find out the overall capacity of the rechargeable battery. It can shows how long will a battery last from the time it’s fully charged to the time that the “low battery” indicator comes on your device. It can be used to test multiple cells individually, and display the results on an

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Low Picofarad Capacitance Meter

Low Picofarad Capacitance Meter ATtiny2313 microcontroller

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This little instrument, named as Pico C, can be used to measure capacitances down to fractions of a picofarad. It built based on ATtiny2313 microcontroller. It has range: <1 pF to 2000 pF (guaranteed); 2500 pF possible and resolution: 0.1 pF. To read the result, this low cost C meter comes with 2 lines LCD. The project is easy to calibrate

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lc meter top1

A Pretty Good LC Meter Based on the AVR using ATTINY2313 Microcontroller

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Calculates and displays L and C from oscillation frequency using reference components. No relays, no range switching, a minimum of controls. And it is pretty accurate too! Note: After reading this article, check out the improved, modified An Even Better LC Meter… The 2 line x 16 character LCD shows the calculated inductance and the oscillation

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curve tracer

A SIMPLE MANUAL CURVE TRACER using microcontroller USING ATMEGA

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Measure current vs voltage or voltage vs current over limited range with good accuracy This was built on a phenolic board which was mounted on a plastic box. The box serves two purposes: It holds the circuit off the workbench, and it makes a nice, stable mount for the potentiometer. Find updates at www.projects.cappels.org I realized

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