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A client came to me with an idea that was to good to pass up. But it involved knowing everything about USB and PIC's, and I mean everything. I started to investigate and did not like what I saw. OMG...

My goal here is almost exactly like your all talking about. I'm thinking of having an 8 pin dip socket on my new version of an on going production board. the goal would be to send a client a 15 cent...

Ya that would be the most secure, if you fry the data pin for example. I heard of a guy who did that and never ruined a chip yet. But that prevents you from firmware updates and such. I am using the...

I have almost finished a very complicated and time consuming project. Code protection is very important to me. But I do not feel I can trust the code protect feature in the pic. so now what ?

...

this is to be fabricated by the hundreds, price is an issue.

What about the onboard "HLVD"

But then again its all in ASM. It talks about these steps

1. Write the value to the HLVDL3:HLVDL0...

The machine I am modifying sends a signal at power down not when powering up(I have a "pause 2000" when powering up). This signal is a glitch. And I do not want to record this signal. It is not...

I have brown-out on and i have tried several settings, but it dosn't help. I believe I need to use WREN and write together. Heres a direct quote from the datasheet.

"There are conditions when...

latest versions, 18f6722, pickit 2


ok, heres the deal. Everything is hunky doory until you switch the machine off and on again, It somtimes will write to the eeprom when it shouldn't.

So I...

I have the same prob.

But his solution dosn't work for me. heres my inc file for this device

NOLIST
ifdef PM_USED
LIST
"Error: PM does not support this device. ...

The PIC16F914-I/PT is a good price and it has a PLVD module which would save me $2. Just need to figure out how to use it :)

It also talks about a "Precision" internal Oscillator. Is this good...

Yep I see it now. I went to PBP manual on 12bit core and It wont allow the serin2 command which I need and several other stuff.

those last 2 chips you sugested, newark down here dosn't have...

Ya there alot more spendy. I'm trying to keep the cost down to minimal. here in Mexico in Newark the current chip is $1.38 and the 18F4620 is $7.28

However the PIC16F877A-I/PT is $5.70 and if I...

ok ya your right, on page 61. But WOW what a difference it draws between 4mhz and 20 mhz. If I go with 4mhz I would save alot even if I do only wake up once every 3 seconds or so.

The reason I'm...

Hello ya all

I am trying to implement a battery backup and a low power mode when theres no power. I just need to detect a door opening and record the time and date to a serial eeprom.

When I...

How do you convert assembly to pbp ???

I just did a search on Newark here in mexico on the PIC18F46K20 it costs $3.50. beside I just looked it up on the melabs picmicro selector guide thats how I came up with that.

But I now found...

We now have much faster pics then way back during most of the projects you see on the web for video. We now can go upto 80 mhz, but thats not picbasic pro compatible. I think the PIC18F46K20 is...

I will go search now for a video overlay chip by Sanyo. Its not a pc but is a vga video signal. thanks

Hi ya all, Thought I would bring up this subject.

I have a need to overlay video (text only) onto a vga signal. I'm not looking forward to hacking into the sync signals or anything else, I would...

Yep that is my problem.

if I take out the "write" it saves fine

COINOUT100:
PREMIOS=PREMIOS+1:if total > 0 then TOTAL=TOTAL-1
:GOTO LOOP 'GOSUB WRITEIT

So I did a little checking...

Hello skimask

Yes Ive been working on your suggestion this whole time, But did get side tracked with one of those replys. so here is the conclusion if I take out "IF COINOUT = 1 THEN...

thank you for setting me straight, however that didnt answer my question. am i reading the data back to "total" correctly ?

WOW

I think that is my problem here. However I only understood a little bit of it.

Why is this so complicated just to store a word ?

OK, so I thought storing total.byte0 in location 0 and...

Thank you for your quick help on this

Ok I did as you suggested

I made a new file, and slowly added until I had a problem. I'm not sure if this is the problem with my "write" but I wouldn't...

Its the internal eeprom of the pic16f84a