A glance forward for voodoo

[Qiaozhi]

Thank you dear Qiaozhi.
Is it possible to guide me about values timer offset for GB_dly_offset and EFE2_dly_offset?
In your code, you defined as following:
const txon_offset = 4;
const txpd_offset = 8;
const main_dly_offset = 5;
const main_smpl_offset = 4;
const efe_dly_offset = 10;
const disc_dly_offset = 9;
const disc_smpl_offset = 6;

Do you think the following const is true?
const GB_dly_offset = 6;
const efe2_dly_offset = 11;

Thank you for your helping.

It's not possible for me to determine the correct offsets required in your specific case.
As it says in the book: " The various timers within the PIC can be used to create accurate delays and pulse widths. However, due to software overhead, such as the time required to push data on the stack and retrieve it when calling and exiting a function, some offset adjustments are required. Initially the values were set to zero, and the actual offset values were determined by measuring the extra delay on the oscilloscope."

[h9361]

It's not possible for me to determine the correct offsets required in your specific case.
As it says in the book: " The various timers within the PIC can be used to create accurate delays and pulse widths. However, due to software overhead, such as the time required to push data on the stack and retrieve it when calling and exiting a function, some offset adjustments are required. Initially the values were set to zero, and the actual offset values were determined by measuring the extra delay on the oscilloscope."

Hello
Dear Qiaozhi
Unfortunately, the I can hardly find the FQT7N10 . Is it possible to tell me a through hole replacement?
Thank you.

[h9361]

It's not possible for me to determine the correct offsets required in your specific case.
As it says in the book: " The various timers within the PIC can be used to create accurate delays and pulse widths. However, due to software overhead, such as the time required to push data on the stack and retrieve it when calling and exiting a function, some offset adjustments are required. Initially the values were set to zero, and the actual offset values were determined by measuring the extra delay on the oscilloscope."

Dear Qiaozhi
I'm going to add HHD Audio part to my Voodoo.
Is it possible to see the attached, do you think the schematic and its values are true?

[Qiaozhi]

Hello
Dear Qiaozhi
Unfortunately, the I can hardly find the FQT7N10 . Is it possible to tell me a through hole replacement?
Thank you.

If you cannot find the correct MOSFET then simply short out that section of the design. Of course it will mean that you will have to be careful not to connect the battery pack the wrong way round.

[Qiaozhi]

Dear Qiaozhi
I'm going to add HHD Audio part to my Voodoo.
Is it possible to see the attached, do you think the schematic and its values are true?

I have never built Mick's audio circuit, so you will have to just experiment. That's what most of us have to do anyway.

[h9361]

I have never built Mick's audio circuit, so you will have to just experiment. That's what most of us have to do anyway.

Dear Qiaozhi, the schematic belongs to HHD, not Mick's audio.
Do you think i can connect the audio part of HHD ?

[h9361]

If you cannot find the correct MOSFET then simply short out that section of the design. Of course it will mean that you will have to be careful not to connect the battery pack the wrong way round.

Is it your mean?

[h9361]

Is it your mean?

Please forgive me, is it possible to guide me how to short it on pcb?

[Qiaozhi]

Please forgive me, is it possible to guide me how to short it on pcb?

Yes, short the MOSFET drains together.

[h9361]

Yes, short the MOSFET drains together.

Thank you.
Is it correct?

[Carl-NC]

Yes

[h9361]

Yes, short the MOSFET drains together.

Hello
Dear Qiaozhi
I hope you are well.
Please forgive me for my question.
I have a technical question about voodoo and want to know your suggestion.
Actually, i want to change voodoo so that it support DD coil. In addition, i want to keep its disc method.
But Voodoo use one mono coil for PI and one mono for Disc. The question that arises here is that do you have any suggestion for simultaneous use of DD coil for PI and DISC method?
Thank you.

[Qiaozhi]

Hello
Dear Qiaozhi
I hope you are well.
Please forgive me for my question.
I have a technical question about voodoo and want to know your suggestion.
Actually, i want to change voodoo so that it support DD coil. In addition, i want to keep its disc method.
But Voodoo use one mono coil for PI and one mono for Disc. The question that arises here is that do you have any suggestion for simultaneous use of DD coil for PI and DISC method?
Thank you.

Voodoo can already work with a DD coil.
Have a look at page 70 in the book which refers to testing with a Fisher F75 DD coil.