Bipolar PI MD with GB and DD Coil

[Aziz]

There's also Westheimer's Rule:
To estimate the time it takes to do a task, estimate the time you think it will take, multiply by 2, and change the unit of measure to the next highest unit.
Thus we allocate 2 days for a one-hour task.

I'm really facing with this rule.

Multiply the result by 2 times and you have included the coffee break time to.
Aziz

[Qiaozhi]

I'm really facing with this rule.

Multiply the result by 2 times and you have included the coffee break time to.
Aziz

It's amazing how many times you find that a 1 hour task takes 2 days, or a 1 day task takes 2 weeks.

[Dean Sarelius]

Hi Gents,
How is it going...?
Have been patiently reading your posts so looking forward to see some video soon..?

[moodz]

Hi Gents,
How is it going...?
Have been patiently reading your posts so looking forward to see some video soon..?

[Detectorist#1]

Bravo moodz!
You’re a worthy successor to ivconic. Now *that’s* how you warm up the crowd.

[Orbit]

Bipolar hybrid detector pi region - ib region with geb +disk. With DD coil.

[GeoMax]

Hi Orbit / Altra,

Nice clean PCB design... Looks very good...

[Orbit]

Hi Orbit / Altra,

Nice clean PCB design... Looks very good...

Hi GeoMax thanks, I think the Altra design is even nicer!And very importantly, the device works great in the field.

[GeoMax]

Hi Orbit/Altra,

I’ve taken a second closer look at your PCB and have a question about it. Is there a reason why the tracks circled in blue are routed at 90-degree angles, even though all the others are routed at 45-degree angles? Or were they simply overlooked during the cleanup process?

[Orbit]

Hi Orbit/Altra,

I’ve taken a second closer look at your PCB and have a question about it. Is there a reason why the tracks circled in blue are routed at 90-degree angles, even though all the others are routed at 45-degree angles? Or were they simply overlooked during the cleanup process?

There is nothing special about it at the moment when I was drawing, so it was convenient for me because the pcb looks as small as possible. If the test version would have fixed the noise problem I had a different layout but since it works as expected I didn't send another version to be done.

[GeoMax]

Hi Orbit,

Thanks... I was just curious and thought there might be a good reason for it.

[pechkata]

https://www.youtube.com/shorts/g6VVChsZ97M

[eduardo1979]

Hi Pechkata.
Thanks for posting the PCB design and the video, which I really like. It would be very helpful if you could also post the schematic, so I can understand how the detector works. I'm especially interested in seeing the PI section of the detector. Did you use the AF108 bipolar configuration? I'd appreciate seeing a schematic, please. Thanks in advance.

[pechkata]

Hi Pechkata.
Thanks for posting the PCB design and the video, which I really like. It would be very helpful if you could also post the schematic, so I can understand how the detector works. I'm especially interested in seeing the PI section of the detector. Did you use the AF108 bipolar configuration? I'd appreciate seeing a schematic, please. Thanks in advance.

Hello, Eduardo.
There is no scheme.
The yellow probe is on the x10 setting.

[eduardo1979]

Okay. Thanks anyway. I was particularly interested in the schematic for the bipolar pulse generator, which I see you've made with a TC4427 and a TL494. I'll try to draw a schematic based on the PCB layout.