Ferrous and no-ferrous

[alber_gold]

for what? in original surf the delay pot is re-moved and uses like a pot for SAT tuning. the delay is fixed on 15us by multurn 50k R25, one time and on all life. this is Terry's mod.

Ahhh .... thank you very much. I had no idea why.

[6666]

The PWM function does not work in the code attached

Ok thank you
6666

[6666]

Hi alber_gold
Could you please tell me the full part number for the micro as there seems to be several max clock speeds

[alber_gold]

Hi alber_gold
Could you please tell me the full part number for the micro as there seems to be several max clock speeds

The full name is : PIC16F873 - 20 I/SP

I think it serves any model.

[6666]

Thanks I have ordered a PIC16F873 - 20 it will be here in about 10 days.

[alber_gold]

It's a good microcrontroller.
It is cheap and has many resources.
It is one of my favorites.
You'll like it.
__________


PS: There is a book: PIC MICROCONTROLLERS Practical design applications II.
From McGrawHill very good. I do not know if it will be in pdf format.

[satdaveuk]

I agree with Joop
If in a really junky location Induction balance is the way to go, However you will still be digging junk but not quite so much unless your like me because I tend to dig almost everything hence the bad back

[alber_gold]

I agree with Joop
If in a really junky location Induction balance is the way to go, However you will still be digging junk but not quite so much unless your like me because I tend to dig almost everything hence the bad back

Joob right.
I'll ride one TGSL in a few weeks. Today I continue to study its performance.
I have not ridden before because I'm a bit poor ($ $ $ $ $ $ $).
When finished with the TGSL want TINKERER-model mount.
TINKERER seems like a great idea. It's a different concept.
And when finished with the TINKERER want to ride someone else.
Gradually I want to try several models.
Meanwhile I will continue with my tests. All my life I'll be doing tests.
Thanks Satdaveuk. My weary bones are grateful. :-)
Regards.

[6666]

Pic has arrived.

[6666]

Pic took the hex ok

[alber_gold]

Hello, I 'm happy for the PIC . :-)


If you are interested in further testing will be interesting this other code.
Change the scheme, but has some advantages.




- Did not use the NE555 .
- The PIC generates a signal with an initial period of 98 uS and a pulse width of 10 uS.
- With the " d " key pulse width is increased.
- With the "f " key pulse width decreases.
- The minimum pulse width is 1.8 uS.


We use the two bytes of ADC capture . ADRESL and ADRESH .
By PORTB only see ADRESL .


We debbug output console. I use Hyperterminal but there are many others.


It should be set as follows: 9600 8n1 Xon / Xoff


In RB 873 pin 7 is RX and RB pin , 6 is TX .
I use a USB to TTL converter like CP2102 USB port.
MAX232 , MAX233 , serial ports etc for COMxx also available.


We see this in the console : " xxx + ADC and ( zzz * 400ns ) uS " + CR
where :
- . Xxx = ADRESL in dec
- . Y = ADRESH in dec
- . Zzz = VALOR_A in dec


Like this :








To upload VALOR_A press "a" key
To download VALOR_A keypress " s "


The minimum tripping time is 600ns ADC and the maximum time is 102 uS.
Keep in mind that the time of each catch is 19.2 uS with a 20 Mhz crystal .


With this code I learned a lot . I hope you serve .

[6666]

Hi alber_gold

Thanks for the information on new design.

Could you please tell us the new coil information Ltx/Lrx and what value is C1, thanks
6666

[alber_gold]

Hi alber_gold

Thanks for the information on new design.

Could you please tell us the new coil information Ltx/Lrx and what value is C1, thanks
6666

Hello, happy 2014.


I have tried many different coils and I can not pinpoint any particular.
You can try different coils and study their behavior.
You can also use a single coil.
56 ohm resistor. protects the transistor.
You can change to increase reach but not exceed the maximum voltage of a transistor CE.
I put C1 for options in the output signal. Different ways with different values.
Typically work without any capacitor.

[6666]

Ordered another PIC16F873 - 20 to try new software


From Alberto in post #41 and ADC input, AN5 does not exist. Connect to AN4/RA5 --> pin 7

[6666]

Alberto just want to check with you that the new hex needs 20 Mhz crystal ?

The new PIC took the new hex OK.
Thanks