This is a multifunction bench test instrument built using an Atmega128 microcontroller and incorporate a lot of functions like voltmeter, ammeter, logic analyzer, frequency generator, frequency counter and also provides regulated DC power supply.
This device is interfaced with a Windows PC to display the measurements. The PC software is developed in VB 6. The function generator is based on a MAX038 IC that can provide sine, triangle or square wave, with adjustable duty cycle, from about 1 Hz to > 20 MHz.
For more detail: A multifunction digital meter using Atmega128 microcontroller
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