pi detector with pic controller

[bernte_one]

hello here is a shematic from a known as working pi unit
at moment not 100% able to drawn a good pcb from it

first who present compact pcb with trough hole components gets full program files from me and15€ via paypal good luck



Bez. Wert
R1 1M
R2,R3,R10 100
R4,R5 220k
R6,R27 470
R7 220
R8,R9 47k
R11,R15 100k
R12-R14, R16, R17, R30 10k
R18, R20-R26 1k
R19,R29 390
P1 220k
P2 22k
C1-C8,C29 100nF
C15 5,6p
C17,C20 22p
C25 2200µF/16V
C26 470µF/16V
T1,T5 BS170
T2 BUZ11
Q1 20MHz
IC1 LM318 Dil
IC2 7805
IC3 4066 Dil
IC4 PIC16F874
Zero,On/Off Reedschalter
Versorgung 12 V Bat/Akku

[ivconic]

What that LED display serves for?
Btw i am having that schematic for long time, never really payed attention on it.
HEX file is 6.105 bytes long, right?
If you are sure that it is alright to make it than later we can draw pcb, no problem.

[bernte_one]

good morning ivica

you are right its that project
the seven segment led display is für vdi

would be happy i you would made a sprint layout pcb from it

kind regards

[ivconic]

good morning ivica

you are right its that project
the seven segment led display is für vdi

would be happy i you would made a sprint layout pcb from it

kind regards

Yes but what is indicated on such VDI!?
I don't understand well that.

[bernte_one]

Hello,

is not clear what author means.
He wrotes target is indicated by buzzer and the led display.
Could first mean the signal strength on both.
OR buzzer for audio and led display separated for target inductance.
Two possibilities which can only be cleared by reading the c source code.
But iám a noob in coding.

[bernte_one]

ah now i see another thing
led red , green, blue
and seven segment display

for rgb led
i read c code

but what i think
rgb ist used for target type indication
and power status

seven segment i can not understand the use?

[ivconic]

ah now i see another thing
led red , green, blue
and seven segment display

for rgb led
i read c code

but what i think
rgb ist used for target type indication
and power status

seven segment i can not understand the use?

Yes, that's what i am confused about.

[ApBerg]

http://www.groegernet.de/schematics/metall1.html

[bernte_one]

got this from user württemberger at german detektorforum
he is also here in geotech
many many thanks




other part names and a change at the seven segment display (only one resistor)

[ivconic]

Must be checked; R16 from pin 2 goes nowhere.

[ivconic]

I ran over it without detailed checking.
Also corrected R16.
Must be checked in details for any more eventual mistakes.

[württemberger]

Here is the correted Picture.

The 7.Segment display the "deep / size" of the target.
The deeper the target, the lower the display.
(0,1,2,3 .... 9, A, B, C, D, E, F)
Very small or deep display = F.
Large or near display = 0

[SWL]

Two mistakes....

[6666]

What coil is used with this design ?

[walkman]

PCB may also bein this way