Mineoro FG79-Happy new Year

[Geo]

Originally Posted by hung

Again, this is not the FG79 model.

Despite of using a PCB reading FG79.1, this is the old CDM210 which I bet was an experimental model as it was never advertised. Maybe only one or two units were produced and the person who bought it, probably was at Mineoro's factory at that time and did it directly from Damasio.

Besides the ATMEL codes, I see there are mistakes in this schematic which will prevent it to work properly.
Also I remember talking to Damasio at that time and he told me that those ATMELS were not being used anymore. So maybe this model was even older yet, probably from around 2001 or 2002.

PS. An update from the person who recovered a small treasure weeks ago with his Mineoro.
He has already exchanged the gold pieces for money. Don't know how much he got tough.

Happy new year for everybody.

Hi Hung.
To be more serious.... the box of Mineoro writes CDM210 FreshGold FG79.1
Now about ATMEL codes....no problem if there are errors. As you see the only job of Atmel is to gives a square wave to the "champer" and to drive the buzzer, so with 2 NE555 we don't need the Atmel. But the problem is not the Atmel but the way that Mineoro works. It uses one input for 2 signals, the signal from champer who must be only from gold (the reason of sample) and the signal from Loop. So when it will beep, you don't know if the signal it is from gold, from other metal or from electric lines.......

Regards