Let your mind enter a state of deep unconsciousness, imagine that instrument you have always desired, an instrument capable of performing multiple tasks, data acquisition, signal generation, and much, much more. Imagine no more because this instrument is finally here. The COMA.

COMA+ The All in One Instrument

Update 2010/12/18:

The COMA is back in delevelopment, now, called the COMA+. I am participating in the STM32 Design Challenge, I thought it was a good incentive to continue development of this project. I will improve the original specifications, like using a TFT display and using a few external ICs to simplify the design, like the ICL7135 multimeter IC, and a DDS to generate the waveforms, probably the AD9833.

Calculator

Oscilloscope

Multimeter

Analyzer

+ More Design files provided for reference only Diagrams Schematics Code Forums

The COMA was my entry to Microchip's PIC32 contest. It was also an idea I had back in my academic years. I always wished of integrating an oscilloscope, a multimeter and a calculator in a single portable device. With the PIC32 contest I saw an opportunity for developing my project while getting a chance to win free prizes!

The initial features and specifications:

Main Features:

2 Channel, 8bit 16MSPS Oscilloscope

FFT on acquired data

8 Channel Logic Analyzer

Arbitrary Signal Generator

Frequency Generator

Multimeter:

Volt Meter, 1 M ohm Input impedance

Voltage Ranges Ammeter More Features +/- 204.8V, 400mV sensitivity +/- 10.24A, 20mA sensitivity 0.2 ohm series Ohmmeter / continuity test +/- 20.48V, 40mV sensitivity +/- 204.8mA , 400uA sensitivity 10 ohm series L/C Meter +/- 2.56V, 5mV sensitivity +/- 2.048mA, 4uA sensitivity 10 ohm series Logic probe +/- 256mV, 500uV sensitivity +/- 20.48mA, 40uA sensitivity 100 ohm series Frequency meter +/- 204.8uA, 0.4uA sensitivity 100 ohm series Transistor check

Calculator, able to do math on real-time data

Graphic LCD 128x128

SD Card for data storage

Optional connection to PC via USB or RS-232

Oscilloscope:

2 Analog Channels

Input Impedance: 1M ohm

Maximum Input Voltage: +/- 25V

A/D Converter Resolution: 8 bits

Maximum Sampling Rate: 16MS/s shared

The COMA was among the eight finalists, unfortunetely it didn't win. But the design of the COMA is still active.Here are some images and videos of the COMA prototype:

Wish List:

Mini Spice Simulator

Engineering Notes

Mini Labview kind application

Games

MOD/MP3 Player

The COMA will be the ultimate engineering tool!