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This project don´t works : dont waste your time building it, there are too much errors: ports assigned to LCD are diferent in schematics and firmware, configuration bits are not correctly set by firmware, there are a reference to a lib not included, and more ... I only don´t understood why this guy post this here if he knows that will not work
Good day sir. I'm very interested in this project. Could you kindly send me the .asm code? I try to compile the abvove given code, but there's quite a few errors. Thanks in advance.
Unless the intention is to learn something, if its just the utility and cost wouldn;t it be a lot better to just buy it off the shelf as this :- http://www.jyetech.com/Products/LcdScope/eDSO062.php or get better bandwidth by simply using FPGA Pluto boards? Saves time and effort.
Hi, Can anyone help me in my project which is almost similar to the SCOPEY.I'm doing the project frequency measurement using FFT technique with a dsPIC4011.The measured frequency has to be displayed on a PC via RS232. Can any1 pls send me the code for this in C or Assembly??????i desperately need the code...
Very good write a program in assembly really difficult and this project is a good sample that every one that want to begin write dsPIC in assembly writer of this program has a good view about dsPIC & oscop Ehsan Mehrabi
Dear vithrar, i like your project, and i thing to make it, but i don see the source file /asm, hex../? Can you send me? I thing this is the great project for low cost scope!!!! liikata@abv.bg Thank you?
Great project! Exactly what I needed and straightforward circuitry. The software is a work of art. One question though regarding the power supply. Could I use a wallwart jack and regulator circuitry with a wallwart supply instead of the onboard PS? I was hoping to prototype this before I etched it and am a little wary of having 120v AC laying around on bare poles. Thanks for a great weekend project though!
This is a great project to make! I would probably make this one with a higher sampling DSP(2Msps), add a dual trace feature, and give it a larger display (320x240).
It actually uses the built-in ADC of the uC, and it was supposed to be 1Msps, but the "man" doesn't modify his data sheets when the errata informs you of the lower sampling speed. I was also thinking about a bigger screen and more channels, but addition screen real estate was unusually expensive compared to the $10 or so you can get a 128x64 screen for, and with additional channels in this design the sampling rate would be divided among the channels, so that the maximum sampling rate would go down with each additional active channel. But, if anyone can find 320x240 screens for cheap, or even color ones, let us all know! 2Msps is pretty wimpy, still. Microchip does make dsPICs with ADC that fast... unless you look at their errata. I'm working on a newer design that will sample at 30 or 40Msps and only be a bit more complicated than the current design.
Okay, I have the printed circuit board layouts and photo etching ready to go. I have the chips and all the parts. Now, how do I make the software into something I can program into the PIC?
Yes, 2Msps is VERY wimpy, especially when other component can get 10Msps and better. Microchip has some DSP controllers with 2 ADCs built in. 320x240 displays can vary in price with the high end in the $100 or so. Any thoughts about adding in a USB port?
They do have some with two, but in order to get the fastest speed you have to configure the device so that one adc samples while the other is converting, so you're back down to one, effectively. I definitely think a usb port would be sweet. I ordered a few 18F parts with USB, so maybe...
The HEX code would certainly make like easier. Who knows, maybe someone could actually build one, besides Vithrar, that is. This construct with mystery code reminds me of Circuit Cellar. I purchased a "Build this" article only to find they do not have any printed circuit board artwork. Now who, in their right mind, is going to waste six months making, testing, and remaking a PCB for a "one-of" construction project? Vithrar must be a Circuit Cellar fan. They do not have artwork and he only supplies mystery code.
just bought aan icd2 for the 33f devices and have been looking on the net for projects purely coded in assembly. everything is coded in C... even the examples from Microchip. anyway i want to learn assembly and this projects code has been a big help. THANKS!!!!!!!!! j9k
HI. I like this scope . But I have a question. In the schematic you have lines RB4,RB5,RB,RB&,RB8 of the pic going to only 3 pot's ? And a parts placemeat for the pcb's Any help would be appreciated.
Very Fine! It looks like you have done the hardest parts of a portable oscilloscope. Perhaps you or another would look into adapting the circuit to work with a laptop through the USB port.
Great project. I have been looking for a cheap o-scope to build. For those of you out there wondering wether to build it or not I have been doing some searching and you can get the 3 main chips for free. The two microchip ones you can get as free samples, and you can get the other chip from TI as a sample too. That just leaves the display to buy assuming you have or can scavange the other stuff.
free samples... coincidence? heh, probably not... Also, for those interested, the displays can be had for about $20 with shipping from ebay, just search for 128x64. There are also some displays that will come close to the same price (with shipping, if that is all you order) at BGmicro.com, but I'm not sure they have a built-in negative voltage generator. That is something I forgot to mention, this design requires a glcd that has a built-in negative voltage generator, so keep that in mind if you want to use the boards.
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Justin Revard
dont waste your time building it, there are too much errors: ports assigned to LCD are diferent in schematics and firmware, configuration bits are not correctly set by firmware, there are a reference to a lib not included, and more ... I only don´t understood why this guy post this here if he knows that will not work
And about the xtal: this circuit don´t needs ?
And abou the cristal oscilator: this circuit don´t needs one ?
Can anyone help me in my project which is almost similar to the SCOPEY.I'm doing the project frequency measurement using FFT technique with a dsPIC4011.The measured frequency has to be displayed on a PC via RS232. Can any1 pls send me the code for this in C or Assembly??????i desperately need the code...
would you mind tell me these codes is suitable for pic30f6014a??
if not suite how can rewrite the program
Can you send me?
I thing this is the great project for low cost scope!!!!
liikata@abv.bg
Thank you?
I like this scope . But I have a question.
In the schematic you have lines RB4,RB5,RB,RB&,RB8 of the pic going to only 3 pot's ? And a parts placemeat for the pcb's Any help would be appreciated.
thank you michael