chance pi build

[dantech]

Next test are done and with my releases more or less above v178 it is necessary to remove D6/Q9/Q5/Q6 circiut and shortcut D4.
My test showed me that D4 do not make anything usefull for dedicated coil but makes some instability in discrimination process.


At the moment the code is practically rewritten by me, timings are changed and some hardware changes are issued also. Since now my releases
will be called "2nd ChancePI" to distinguish from base project called "Chance PI"

2nd ChancePI v001 will be published soon.

I have to point out that every my software release has roots in the project called ChancePI/AndyF

[dantech]

New project starts the thread here:
http://www.geotech1.com/forums/showt...812#post221812

[geoscash1]

Is there going to be a build doc made with mods for this or is it just going to be a free for all with bits & pieces here and there?

It would sure be nice if there was a build doc to follow like the mpp along with a schematic and parts list and scope instruction as well. I purchased a board kit from Andy (silverdog) but have no idea where to find a parts list, schematic or anything other than whats in this thread.

Any help with all of that would be awesome..

[dantech]

You can use pcb from original ChancePI. My hardware is a little bit simplified but PCB should be compatible (empty places for parts).
New schematic inside .zip file

[baum7154]

Hi Dantech,

I just received my AtMega328-P UCs and I am wondering if you have resolved the issues with your firmware for this UC? I would like to get the firmware loaded and try it out on small gold targets.

Regards,

Dan

[dantech]

v180 should works well. I do not remeber well what I did in the v180

I sugest to remove Q9/D6.

Use rather v001 from 2nd ChancePI project

[dantech]

The development of ChancePI is completly finished

In the 2nd ChancePI thread there is comparison test between 2nd ChancePI and Garret ACE 250

http://www.geotech1.com/forums/showt...036#post222036

[ripsdevala]

Hi,
Anyone have original chance pi sprint layout with update to follow v.1.21 with keyboard, im not sure with my layout, many version pcb with 1.2.1 firmware, key not working correctly

Thanks

[Toros]

Hi,
Anyone have original chance pi sprint layout with update to follow v.1.21 with keyboard, im not sure with my layout, many version pcb with 1.2.1 firmware, key not working correctly

Thanks

http://md4u.ru/download/file.php?id=10090

[ripsdevala]

http://md4u.ru/download/file.php?id=10090

Many thanks

[Virdi_248]

I am a beginner programming microcontrollers.


I have programmed the chip (Atmega8-16PU) with the programmer usbasp and khazama Avr. Now is the problem of recording the fuses on the chip and I'm afraid because long ago I managed to leave another chip as a brick.


Can someone help me and tell me what I have to do in this window?


We have to take into account what a forero says in post number 89.


"But please pay attention for fuses because for Khazma checked bits = 1 but on Chance website with Ponyprog screenshot it has checked bits = 0


So INVERT ALL FUSE BITS or Ooooopppssss .... Atmega8 Bricked ..... "


Two days with this, anyway. I hope someone can help me.

Attached the photo. What numbers do I have to select? Thank you very much.

[ripsdevala]

I use burnomat for this, never fail me, dont use fuse from anywhere except from the author, yesterday i try to use fuse to follow the latest dantech firmware for atmega8 and bricked my at8.

[Virdi_248]

I got my second ladridllo, soon enough I have enough for a house.


I think I've selected the fuses well and now I can not access the chip.


Written this way


Message trying to read the chip.



The .hex I have programmed before and although I can no longer access the chip.


Will the chip work on the detector?

[ripsdevala]

Try it, if it show on the display then its work

[Virdi_248]

Finally I have managed to arm the metal detector. Soon it will be employed at the accomplishment of a good bobbin.


On the other hand I want to protect from the oxide the tracks with domestic resin of pine, have used common alcohol and resin of colophony or of pine.

Does it influence the correct functioning if I apply it to the detector?