Impulse 2

[qute1]

Mines in transit so waiting with baited paws (and mixed metaphors) i will give an opinion when it hits the mat.

[qute1]

Arrived, fires up but display is FUBAR backlight but nowt else, just fiddling and it does detect with appropriate coil but cant really set anything as can't see the display!
Maybe just the pin connector but haven't had time to play yet apart from redobbing the solder joints suspect its the connector block but ....

[kt315]

Nokia screen. That's great ingenuity. Due to my health mine is still sitting in the box. It would be good to now how this goes with fastest feasible coil and shortest workable delay, as there are many adjustments available.
Still, this is a very easy and cost effective hobby build.

Thanks Qiaozhi.

our first project wih ZAK was VDI (godograph) with Nokia screen. ZAK did soft, i did schematic part and pcb, - you see it here.

[Tim]

Very good KT. I have Pickit2 for Pickini project but Magpi also looks worthwhile.

[qute1]

Fixed it the lcd connector block is not the best so after two hours checking dries and wiggling "its alive" not too bad still needs tweaking to the coil but gets thin mans gold wedding band at 5" and heavy silver (two rings 1.8 troy ounces .......999) at about 8" which is not bad and the standard for most good pulsies in air(mine anyhow) so with a 124uh 1.3ohm 9.8" coil i say "its a goodun" !

[6666]

Good work it will be interesting to hear more about it.

[Tim]

Good work it will be interesting to hear more about it.

Yes. Delay and width are adjustable, and a fast coil may improve this result.
I am also interested to see the filter tested. 1-low 2-med 3-dynamic/reset.

[6666]

Did it come with a schematic ?

[qute1]

No , no schematic its programmed pic chip type thingy like arduino, here is the manual board picture, its fairly basic to figure though.

[Qiaozhi]

Did it come with a schematic ?

I plan to back-engineer the hardware, so we'll have a schematic later.
The software will be another issue.

[6666]

I plan to back-engineer the hardware, so we'll have a schematic later.
The software will be another issue.

[dbanner]

I plan to back-engineer the hardware, so we'll have a schematic later.
The software will be another issue.

That would be very nice, then I could write the code. If only I knew how, but I don't have a clue. Maybe author will be generous and provide the code. I'm sure someone here on forum can do software. Maybe hack the micro? What the hell do I know

[kt315]

i asked him to share a schematic, in feepay pm. anybody has his email address?

[qute1]

error on previous post thats 379uh coil sos got excited but careful tweaking of settings today and it does seem to be getting good depth, width at 12, time at 62 ! sensitivity full on.

[Qiaozhi]

That would be very nice, then I could write the code. If only I knew how, but I don't have a clue. Maybe author will be generous and provide the code. I'm sure someone here on forum can do software. Maybe hack the micro? What the hell do I know

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.