Impulse 2

[Melbeta]

Well, I can say when hacking a chip, one can send a variety of voltage amounts, which we called JIGGLE back then, and eventually the secured chip, and suddenly there was the code on my computer screen. I admit to nothing, I know nothing. Well I do know one thing. I meta a Russian guy some years ago who was entering secured Microcontroller chips, for his doctors, and replacing the burned fuses, and reading the sram chips contents inside the microcontrollers. Again, I admit to nothing, i know nothing.

Oh I know another something. I met Microchip engineers, who opened up to me regarding reverse engineering, and they were doing that as well. Again, I admit to nothing, I know nothing.

Oh I know another thing. Some guys were building data stream capture devices, and then placing the captured data stream into a hex file, arranged by virtue of the lines of the commans, showing the first byte as the first byte, the last byte as the line checksum number. Each line of command had a line checksum number thus one could separate the lines of command. That is until they began to scramble each line of command.

I am not going to go any further right now...
Melbeta

[Tim]

Not long and our Chinese friends will have a chip decoder on Ebay, if they haven't already......

[qute1]

hmm i was wondering what the magic fingers were for on the left...........thinks.....where did i leave that eprom jimper........

[qute1]

oh and just bought another four of these to play with soooo "its tweaking time" bd bd bd bd

[dbanner]

On the left-hand side of the PCB there's a 5-pin ICSP connector consisting of a some pads on the top layer. I've soldered a standard 5-pin SIL connector onto the pads so that I can connect a PICkit2 programmer and attempt to grab the hex file. Unfortunately the PICkit2 does not recognise the 16F1825 processor. I'm just trying to figure out how to add a configuration for this PIC to the pk2DeviceFile.dat file. I expect the hex will be code protected, but I've got to try.

The pickit 3 software should have the appropriate file, maybe it can just be placed in the appropriate folder for pickit 2, not sure. Or maybe just use another micro.

[dbanner]

This version 2.61 pickit2 supports 16f1825, you can find it here
https://www.doityourselfchristmas.co...gramming_A_PIC

[Qiaozhi]

This version 2.61 pickit2 supports 16f1825, you can find it here
https://www.doityourselfchristmas.co...gramming_A_PIC

I already had version 2.61 for the PICkit2. It was the latest PK2DeviceFile.dat configuration file I was having trouble finding. Well done on finding that!
Now that the programmer is able to detect the PIC16LF1825 device, my plan was to read and save the original hex code. Then I could play around with programming the detector without losing the original software. Unfortunately (as I expected) both the code and EEPROM have code protect turned on, so that will not be possible.

I've managed to trace out the circuit of the Impulse2. Once I get the chance to create the schematic I'll post it here.

[dbanner]

I already had version 2.61 for the PICkit2. It was the latest PK2DeviceFile.dat configuration file I was having trouble finding. Well done on finding that!
Now that the programmer is able to detect the PIC16LF1825 device, my plan was to read and save the original hex code. Then I could play around with programming the detector without losing the original software. Unfortunately (as I expected) both the code and EEPROM have code protect turned on, so that will not be possible.

I've managed to trace out the circuit of the Impulse2. Once I get the chance to create the schematic I'll post it here.

Well that's too bad, but not unexpected. At least you have the schematic traced out. That would be great to see.
But then what would be the use without the software? The graphical lcd display interface is one good thing about this detector, also its small size may be good for underwater detector. The circuit itself might be improved a bit for optimum performance. Don't know anything about writing code, maybe I should learn how.

[kt315]

replied me will share the schematic later but does not share the hex.

[dbanner]

Well that's no surprise. Just schematic alone is useless. Unless someone is able to make software. Maybe author would consider demo version of hex file with a counter that expires after limited number of uses. That way he may benefit from other people trying to improve the circuit for better performance.

[bernte_one]

no demo Version please, i hope author can send a open Firmware to Play for all

[kt315]

no demo Version please, i hope author can send a open Firmware to Play for all

ahaha! ))) and then ebay?

[dbanner]

KT, we see your point. With firmware and hardware( schematic). Next thing you know is that someone is selling them on eBay.
I hope those were your boards,right?

[kt315]

not mine boards. not my selling. i only shared gerber files to one. thats good example what will be if you give
the data to somebody. people do not want to grasp how much time i wasted on the layout.
they do not want to appreciate the hard job of other man. only 'here and now'.

[Andi68]

Only take and never give