'KROT2-XM' (mole), new project Xmega32

[ivconic]

I must admit that i am bit confused about this.
ATxmega32A4 (from authors schematic on site) is having 32+4kB flash.
Latest K3 HEX files are all above 70-80kB size.
How about that?
It is possible to flash those HEX files only in ATxmega128A4 chips.
Or i am missing something here?

[DonCaffeDelaSkobalj]

I must admit that i am bit confused about this.
ATxmega32A4 (from authors schematic on site) is having 32+4kB flash.
Latest K3 HEX files are all above 70-80kB size.
How about that?
It is possible to flash those HEX files only in ATxmega128A4 chips.
Or i am missing something here?

Zdravo Ivica !!

Planiras li da pravis ovu masinu?. Da malo bolje iscackam informacije za nju !!

Pozdrav s Juzne Pruge !!

[ivconic]

Zdravo Ivica !!

Planiras li da pravis ovu masinu?. Da malo bolje iscackam informacije za nju !!

Pozdrav s Juzne Pruge !!

Maybe. Not sure though. Winter is long enough.
But i want first to clear up about those large HEX files, they can't fit into 32 chip version.
Unless author figured out some special trick?

Please write in English, because of the forum rules...

Piši na Engleskom jer će ona isprana pederčina kvazišohi garant da se pojavi ovde i da svira kurcu, kao po običaju!

[DonCaffeDelaSkobalj]

OK !!

[DonCaffeDelaSkobalj]

Andrew has mad till now 32 software versions for his KROT(MOLE) detector. Respect Author !!

Ицо - program is exactly 32kB size long in hex - all others are FF(hex) or empty space for disassember. This is due to AVR studio or similar development saved complete reserved buffer in one hex.



If you reserve more buffer space than 32kB you can see how program sequence is repeating. For example you can open buffer 1Mb and it will be filled till the end with repetitions of loaded segment 32kB.

By the way KROT thread on Andrew site has 320 pages and many people were successfuly programmed their 1.8V-3.3V ATXMEGA32A4-AU. AU is automoto processor with industrial temperature range - so it can run under - Zero temoperatures.

Poz.
Don.

[DonCaffeDelaSkobalj]

KROT-2 (MOLE-2) with Sniper coil. (sharp-shooter)

Ico spremaj se da odradimo ovu masinu pa na prolece na Jastrebac - da otvorimo bar jednu magazu pre no sto ove pedercine dodju i pokupe nam sve.!!


Ivica , me and much more people getting ready to make and improve this detector and open 2017 spring prospecting season in Serbia.!
I also have plan to modify this KROT (MOLE) detector to Golden Oz Detector for some good Serbian friends in Oz - Australia. They need some kind of BUSH NUGGET CLEANER !! According to real informations country OZ is ELDORADO for gold prospectors. There is no such GOLD rich land like Oz.

[DonCaffeDelaSkobalj]

КРОТ (МОЛЕ) love Fisher 11" DD coil.

[DonCaffeDelaSkobalj]

Ok lets arm yourself with important informations.

1st. ATXMEGA32A4-AU from Atmel



Controller Family/Series:ATxmegaCPU
Speed:32MHz
Program Memory Size:32KB
RAM Memory Size:4KB
No. of Pins:44Pins
MCU Case Style:TQFP
No. of I/O's:34I/O's
Embedded Interface Type:I2C, SPI, UART
Supply Voltage Min:1.6V
Supply Voltage Max:3.6V
Range:XMEGA Microcontrollers Automotive Qualification Standard

• Non-volatile program and data memories
• Peripheral features - Four-channel DMA controller with support for external requests
• Power-on reset (POR) and programmable brown-out detection
• Internal and external clock options with PLL
• Programmable multi-level interrupt controller
• Sleep modes - Idle, power-down, standby, power-save, extended standby
• Advanced programming, test and debugging interfaces
• PDI (Program and Debug Interface) for programming, test and debugging

ATXMEGA32A4-AU Factory info
http://www.atmel.com/Images/doc8077.pdf
http://www.atmel.com/Images/Atmel-80..._Datasheet.pdf

Link:
http://www.atmel.com/devices/ATXMEGA32A4.aspx

[DonCaffeDelaSkobalj]

2nd MCP601 Front-End Receiver


MCP601 rail-to-rail operational amplifier (op amp) has a gain bandwidth product of 2.8 MHz with low typical operating current of 230 uA and an offset voltage that is less than 2 mV. The MCP601 uses Microchip's advanced CMOS technology, which provides low bias current, high-speed operation, high open-loop gain, and rail-to-rail output swing. The MCP601 operates with a single supply voltage that can be as low as 2.7V, while drawing less than 325 of quiescent current. The MCP601 is available in standard 8-lead PDIP, SOIC, TSSOP and 5-lead SOT-23A packages. This amplifier is ideal for industrial process control, low-power battery-operated devices, portable equipment, data acquisition equipment, test equipment and low-end audio applications.

MCP601 Factory info
http://ww1.microchip.com/downloads/en/DeviceDoc/21314g.pdf

Microchip Technology
-
Tube
Active
General Purpose
1
Rail-to-Rail
2.3 V/µs
2.8MHz
-
1pA
700µV
230µA
22mA
2.7 V ~ 6 V
-40°C ~ 85°C
Through Hole
8-DIP (0.300", 7.62mm)
8-PDIP

Link:
http://www.microchip.com/wwwproducts/en/MCP601

[DonCaffeDelaSkobalj]

How to boost KROT (MOLE) targets recovery speed ?

Lets see what recovery speed is on example of Makro Racer 2.

Ok what is wrong with MCP 601 ?

1st. Very slow Slew Rate 2.3V//µs or in prospecting term slow target response. This simple means that small signals from target in the soil will be very probably dispersed in the highly mineralised soil before front end receiver will even handle them.

2nd. Very miserable Gain Bandwidth Product of only 2.8MHz. In prospecting term this means that for very short in time and small signals from targets we will have very small gain of Front End receiver because as signal is shorter for given open loop gain amplifying is smaller. It further means poor detection depth. These are MCP 601 engineers design restrictions.

To solve problem we need Rail-to-Rail OP with extremelly high both Slew Rate and Gain Bandwidth Product. Proble is easy solvable and depend only from money. There are many excellent high speed rail-to-rail operational amplifiers on market.

For example Texas Instruments High-Speed Op Amps >=50MHz
http://www.ti.com/lsds/ti/amplifiers...-products.page

We need to find properly one "GOLDEN OP" !

[ivconic]

This one is larger;
http://radiodom.org/K3_48_Turbo.hex

[DonCaffeDelaSkobalj]

Ico resicemo i to. Stace sve u 32kB. Taj program je za KROT-3 (MOLE-3).
Pogledaj ovo je vrlo interesantno - najnoviji projekat Andreja vise frekfentni KROT-DFX.
http://www.radiodom.org/index/krot2_dfkh/0-21
Ivica size of hex program will solve. That hex code is for KROT-3 (MOLE-3) detector.
Look at this - newest Andrew project Multi-frequency KROT-DFX (MOLE-DFX) detector.
http://www.radiodom.org/index/krot2_dfkh/0-21

[DonCaffeDelaSkobalj]

Ok GOLD prospectors now lets see how Fisher has solved problem with Front End Receiver in F-75

F-75 schematics - click to zoom !!


What is in ?



Linear Technology LT6230 - excellent Front End Receiver.

Make difference to MCP 601:

Gain Bandwidth Product = 215MHz . !
Slew Rate = 70 V/µs . !
And for only 7 bucks . !

Product Attributes	Select All
Integrated Circuits (ICs)
Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Linear Technology
-
Tape & Reel (TR)
Active
General Purpose
1
Rail-to-Rail
70 V/µs
215MHz
-
5µA
100µV
3.3mA
30mA
3 V ~ 12.6 V, ±1.5 V ~ 6.3 V
0°C ~ 70°C
Surface Mount
SOT-23-6 Thin, TSOT-23-6
TSOT-23-6

Factory info:

http://www.linear.com/product/LT6230
http://cds.linear.com/docs/en/datasheet/623012fc.pdf
http://cds.linear.com/docs/en/applic...te/an148fa.pdf

[DonCaffeDelaSkobalj]

Continuation of this very interesting topic will be at Serbian-Metal-Detecting-Forum where Ivica is main technical administrator:

http://hobidetektori.serbianforum.info/



Good health and Happy Prospecting

all regards:
Don Corleone Caffe De La Skobalj
REPUBLIKA SRBIJA

[ujosvec]

I changed MCP601→OPA1611