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
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Update 2010/12/18: 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. |
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Calculator |
Design files provided for reference only | |||||||
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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
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!
Comments
A shame it did not win the contest, but finishng the project will be the ultimate victory !
I do have a questionmark also: "Calculator, able to do math on real-time data", I am not sure what to imagine here ....., could it mean that when you are measuring a value from the scope a calculation with that value gets updated in real time while the graph on the scope changes ?
I wished that your design could have been part of PIC32 tops.
Warm Regards,
Boseji
http://m8051.blogspot.com
kickstarter
The microcontroller is used in the form of KIT EVAL PIC32 STARTER. To simplify the manufacturing of the device (to reduce the number of boards and to make a compact design), please convert the scheme so that no additional boards (kits) to use.
It would be so great if you could integrate this on the Natami ( http://www.natami.net) or propose this as an expansion board or link thru USB which would make it ideal so it could be connected to any OS / Machine out there that has a USB :)
remote control of the application from the PC and real time data flow would be nice too :) then you could also have the advantage of a bigger screen real estate.
Also why not use the Freescale K53 Kinetis ( you should look at the Analog part of this baby , albeit no FPU)
Thanks
Grant Plowman
Program Director
Interactive Media Publishing
grant@i-mediapub.com
541-535-5552