BI-PI Pulse

[haylaz0036]

https://www.facebook.com/share/v/18oMJhhkz7/

What are your thoughts on this device? I want to build this device but I can't find a PIC16F18426 chip. Is there an alternative chip that can replace it?

[Altra]

That looks like Carl's circuit from ITMD3

https://www.geotech1.com/forums/forum/inside-the-metal-detector-aa/itmd3/432527-bipolar-pi-design

[boilcoil]

It doesn't just look the same - it is the same.

[Altra]

The vco and absolute value amplifiers have been changed. It is Carl's Tx and RX and Eduardo's (GS5 Lite) audio. Probably a nice project.

[eduardo1979]

Hello.
Yes. This is a redesigned project I created, based primarily on Carl's Bipolar-PI design (ITMD3). The detector works quite well. As Altra correctly points out, I changed the VCO, the absolute value amplifiers, split the preamplifier into two stages, and added four level translators, replacing the 74HCT4316 with a 74HCT4066. Here's a link to a video of the detector.

https://www.youtube.com/shorts/3mG-37O-b1Q

Regards,
Eduardo.

[haylaz0036]

Hello.
Yes. This is a redesigned project I created, based primarily on Carl's Bipolar-PI design (ITMD3). The detector works quite well. As Altra correctly points out, I changed the VCO, the absolute value amplifiers, split the preamplifier into two stages, and added four level translators, replacing the 74HCT4316 with a 74HCT4066. Here's a link to a video of the detector.

https://www.youtube.com/shorts/3mG-37O-b1Q

Regards,
Eduardo.

Dear Eduardo, I really liked the detector and I want to make the sound perfect, but I can't find the PIC16F18426 chip. Is there an alternative, or could you please compile the hex file to an easily found BIP chip? Sincerely, [email protected]

[pechkata]

https://www.facebook.com/share/v/18oMJhhkz7/


What are your thoughts on this device? I want to build this device but I can't find a PIC16F18426 chip. Is there an alternative chip that can replace it?

Yes - here the discriminator only works between gold and iron...
It doesn't work properly on other alloys...

[haylaz0036]

Yes - here the discriminator only works between gold and iron...
It doesn't work properly on other alloys...

Dear engineer, what alternative could I use instead of the PIC16F18426 chip? I couldn't find one. What are the possible replacements?

[Carl-NC]

The PIC chip is used as a timing generator, so just about any other PIC chip will work.

[haylaz0036]

Dear engineer Eduardo, could you please recreate the hex code on a modern Jeep from 1979 that has easy access to the system? Could you please regenerate the hex code?

[pechkata]

Dear engineer, what alternative could I use instead of the PIC16F18426 chip? I couldn't find one. What are the possible replacements?

This hex file only works on this chip...
Eduardo cannot answer.

[haylaz0036]

This hex file only works on this chip...
Eduardo cannot answer.

Mr. pechkata, could you perhaps recompile the .asm file on a different, more up-to-date chip?

[pechkata]

Mr. pechkata, could you perhaps recompile the .asm file on a different, more up-to-date chip?

I can't - I don't have that experience...

https://www.youtube.com/shorts/H6ZfXZA6NHg

[eduardo1979]

Dear engineer Eduardo, could you please recreate the hex code on a modern Jeep from 1979 that has easy access to the system? Could you please regenerate the hex code?

I'm sorry, but I can't help you with the programming, as I have no experience with PIC microcontrollers and programming isn't my strong suit. There are many people on the forum with extensive programming knowledge.

[Carl-NC]

Mr. pechkata, could you perhaps recompile the .asm file on a different, more up-to-date chip?

If it uses the same source code as the ITMD3 circuit, then all the code is in C and you can download it from the ITMD3 forum. Then you can port it to whatever processor you want. If you don't know how, then this is an excellent opportunity to learn.