XP ADX250 change to ADVENTIS II

[bonzai502]

Hi,
Got a XP ADX250 and noticed that mainboard and microchip (V4) are exactly the same as the XP ADVENTIS II. Only difference is that the groundbalance pot is missing on the ADX250. The mainboard is 100% ready to add this potentiometer and the case has also a predrilled hole behind the frontlayer.
Just need to know what value this potentiometer must be?

Is there someone with a Adventis II and willing to check the value of his groundbalance potentiometer? The case opens very easy: remove the wreck from the connector at the bottom en gently remove the 4 screws at the front of the case. Then it opens easy without any harm.

When I got it's value I will solder it into my ADX250 and make it to an ADX250 with groundbalance like an ADVENTIS II. I think it's worth trying................

Thanks for any information!

Michel.

[bonzai502]

attachements

inside XP ADX250

[ivconic]

What's that uPc? Some PIC..?

Also is interesting to see that Cu trace on left upper side od pcb. Looks like Bluetooth antenna or something simillar..?
I admit; am not familliar with XP detectors at all...

[bonzai502]

Upc and Cu trace antenna

Hi Ivconic,

The processor is indeed a pic. This PIC manages search frequency but many other processes. Sadly enough it's write/read protected.

The Cu Trace is the antenna for the onboard wireless transmitter (I think it's on 433Mhz but will check soon). There are two crystals nearby for the oscillator and with the switch on the frontpanel you can easlily change from frequency to eliminate interference from other users.
The first models with wireless transmitter did have an module connected to the mainboard but the new models have it included to the main.

XP is well used here in Holland but it's a french manufacturer.

Regards,
Michel.

[ivconic]

Call me crazy; but if it is PIC16C84 than it can be reversed. However, PIC16F84 can't
As i remember, once in the past, procedure for C serie reversing was pretty straightforward. Just put uPc in programmer, lower Vpp to 12.4V and blow only fuses ! Memory area remains intacted! Than just read....and save!
Oooops! I did it again!

[bonzai502]

PIC

Thanks for reply.
Will check the exact type of PIC but when I give it a try to blown the fuse and it fail.........I destroy my own machine.

Don't really need the hexfile now, my thread started to add a groundbalance pot to make it an ADVENTIS II. The software is the same for both models!!!!! so I don't have to change it now.

For future experiments it may become handy to tune the detector furhter by changing the software inside the PIC but I do hope some other guy come up with the files and don't have to take the risk of destroy mine.

Nice techtalking with you and this seems to be a great forum!
Michel.

[ivconic]

Thanks for reply.
Will check the exact type of PIC but when I give it a try to blown the fuse and it fail.........I destroy my own machine.

Don't really need the hexfile now, my thread started to add a groundbalance pot to make it an ADVENTIS II. The software is the same for both models!!!!! so I don't have to change it now.

For future experiments it may become handy to tune the detector furhter by changing the software inside the PIC but I do hope some other guy come up with the files and don't have to take the risk of destroy mine.

Nice techtalking with you and this seems to be a great forum!
Michel.

No!No! I DO NOT suggest you to try to reverse that PIC! Dont DO that!
You missunderstood me! I explained method just for information.
Do not play and risk to destroy your detector.
Method is accurate and right, but only experienced expert can do that successfully. And of course with proper tools. Only good programmators are suitable for that operation. Lowest which can suit demands is ProPic II with extremly clean power supply, checked several times previously on some other non important PIC's.
I did that in the past, long time ago...when PIC16Cxx serie was actual.
Todays all PIC's are F serie with much better protection.
I am sorry if caused any intentions with my post...
Regards!

[bonzai502]

ADX250 PIC

My response seems a little late but the PIC is a F type. PIC16F84 so I think (almost) impossible to do a readout. Not even with 2 PIC's available, fuse reshort etc.

Next,
I did add a external pot on the ADX250 for manual ground adjust. The hole is already there in the front only a thinn layer hide this. The PIC for the ADX250 is exactly the same as the ADVENTIS, so I can honestly say the ADX250 and ADVENTIS are 100% the same machines besides of the ground balance external (adventis) or internal (ADX250).

Anyway the ADX250 is out of production (june 2011) and only ADVENTIS is still on.

But when someone got's his hands on a ADX250 and buys an external pot it's fixed within 15 minutes and you have a full working ADVENTIS.

Regards,
Michel.

[eduardo1979]

http://www.geotech1.com/forums/showt...light=adventis

[bonzai502]

XP ADX250 change to ADVENTIS II

Hi Eduardo,

Didn't see your thread before but I guess we had the same thoughts!
My ADX250 is modded the same way as your method and I use a 10K pot as well after removing the SMD resistor of 4K7. Just for comfort I made a small sticker arround the pot in the front with a scale starting with A Accept (pot totally to the left) C Center (pot about in the middle, this is the position of 4K7 so the old fixed value) and R Reject (pot totally to the right).

How is your experience with the manuall ground balance?

I think something to the left (Let's say 11 or 10 o'clock) will give me more sensitivity on small less conductive items. Curious about your preferred setting.

Regards,
Michel.

[eduardo1979]

I have no experience with Adventis.

[Sean_Goddard]

I NOW have access to a COMMERCIAL programmer which can read code protected PIC's. Gonna have me a bucket load of fun pulling files from anything I can find the make of programmer is.......I'll post this later!