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Author Topic: Feedback To Source  (Read 354293 times)

Offline Groundloop

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Re: Feedback To Source
« Reply #780 on: May 05, 2011, 05:52:06 AM »
I have found problems to get the right parts.

Jesus

Jesus,

You can also use the LT1073CN8. This one has an adjustable output voltage by
using two resistors.

See: http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=2556570&k=LT1073

GL.

Offline nievesoliveras

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Re: Feedback To Source
« Reply #781 on: May 05, 2011, 03:06:59 PM »
Thank you @groundloop!

I dont know if it makes a difference.
The one I bought originally was LT1073CN8-12

This other replacements, maybe, are not as effective.

Now I have decisions to make and experiments to do.

Jesus

Offline nievesoliveras

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Re: Feedback To Source
« Reply #782 on: May 09, 2011, 03:28:00 PM »
@digikey

Just one LT1073 piece and the shipping cost was about 40 dollars.

I got a good deal for three for less than 40 dollars at the factory.

Jesus

Offline nievesoliveras

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Re: Feedback To Source
« Reply #783 on: May 09, 2011, 03:30:58 PM »
On the next chance, I will get the other parts I need.

Jesus

Offline nievesoliveras

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Re: Feedback To Source
« Reply #784 on: May 12, 2011, 04:26:24 PM »
While experimenting with the pickit-2 programer I got to the reality that it does not program the pic16f88.

I reread the information I got and found that the thing only programs 8, 14 and 20 pin flash devices.

I will find a solution.

Jesus

Offline itsu

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Re: Feedback To Source
« Reply #785 on: May 12, 2011, 04:37:14 PM »

Hi Jesus,  it does,  see:   http://www.youtube.com/watch?v=HVQ4tj-D8jM&feature=relmfu

Perhaps you use the "low Pin count demo" board which does not.


Regards Itsu

Offline nievesoliveras

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Re: Feedback To Source
« Reply #786 on: May 13, 2011, 10:02:53 PM »
Hi Jesus,  it does,  see:   http://www.youtube.com/watch?v=HVQ4tj-D8jM&feature=relmfu

Perhaps you use the "low Pin count demo" board which does not.


Regards Itsu

Thank you @itsu!!!

I will give it a try.  I have problems understanding the explanations on the video because it has an eco on the words you say.

The circuit you draw has only the mclr connection, I have to figure out the others.

That is a great help from you.
Thanks again!!!

Jesus

Offline Groundloop

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Re: Feedback To Source
« Reply #787 on: May 13, 2011, 10:47:43 PM »
Jesus,

Find a 18 pin IC socket. Solder wires to a little connector that
fits in your PicKit2 socket. Download the PicKit2 software
programmer. And there you go.

GL.

Offline nievesoliveras

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Re: Feedback To Source
« Reply #788 on: May 14, 2011, 05:24:12 AM »
Jesus,

Find a 18 pin IC socket. Solder wires to a little connector that
fits in your PicKit2 socket. Download the PicKit2 software
programmer. And there you go.

GL.

Thank you @groundloop!!!
I just finished a schematic with what I understood from the posted video and wanted to know if it was correct.

But it seems that the one you posted is easier to accomplish.

By the way is it correct?

Jesus

Offline itsu

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Re: Feedback To Source
« Reply #789 on: May 14, 2011, 01:14:52 PM »
Hi Jesus,


be aware, the video i pointed at is not mine!
I too am learning to programm PIC's with the pickit 2, and ran into this video when googling.

This video is a tutorial on how to programm with a pickit 2 "in circuit", meaning to programm a pic when it is already incorperated into a circuit (here a circuit to blink a led).
Its called ICSP (In Circuit Serial Programming), look it up in your pickit 2 users guide.

Your drawing looks ok to me.


When you ONLY want to load your PIC (standalone, so without being in the circuit), then you can use the setup given by Groundloop.
Use the pickit 2 programm, and load (write) your hex file into the Pic, then "move" your pic into the circuit you have designed and it should work.

Good luck,  regards Itsu.


Offline nievesoliveras

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Re: Feedback To Source
« Reply #790 on: May 14, 2011, 05:08:40 PM »
Thank you @itsu!!

Jesus

Offline nievesoliveras

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Re: Feedback To Source
« Reply #791 on: May 16, 2011, 02:11:18 PM »
I sent for the rest of the parts. The list and the code numbers are on the graphic, just in case somebody needs it.

Not all the parts are for this project. It is that they were waiting their turn and reached their time now.

Jesus

Offline Groundloop

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Re: Feedback To Source
« Reply #792 on: May 16, 2011, 04:48:00 PM »
Thank you @groundloop!!!
I just finished a schematic with what I understood from the posted video and wanted to know if it was correct.

But it seems that the one you posted is easier to accomplish.

By the way is it correct?

Jesus

Jesus,

Yes, but you must be sure that your external +5 volt is off when you plug in your PicKit2.
Also be sure to unplug your PicKit2 when your done programming the PIC.

I always use IC socket on the PIC because I want to reuse the PIC in other circuits.
So I bought myself a plastic case and mounted a ZIF socket onto the case. I did
put my PicKit2 inside the case. So now I have a USB based PIC programmer with
a ZIF (Zero Insertion Force) socket.

GL.

Offline nievesoliveras

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Re: Feedback To Source
« Reply #793 on: May 17, 2011, 02:45:05 AM »
Thank @groundloop!!

I just sent for one of those zifs or zero insertion force devices.

Your programer looks good!!

Jesus

Offline Groundloop

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Re: Feedback To Source
« Reply #794 on: May 17, 2011, 06:45:54 AM »
Thank @groundloop!!

I just sent for one of those zifs or zero insertion force devices.

Your programer looks good!!

Jesus

Jesus,

Thank you. :-)

It is an easy solution to get a PIC programmer. Just remember
that when you solder the wires on the underside of the ZIF
socket then it will look like the attached drawing.

GL.