Search found 141 matches

by Sweetalk
Tue Dec 19, 2023 12:56 am
Forum: FV-1 hardware questions
Topic: Extending FV-1 I/O
Replies: 2
Views: 9490

Re: Extending FV-1 I/O

Just like Frank says, in a project first comes the "what" to start searching for the "how". There's a lot of tips and tricks you can do to expand some stuff on the FV1, but there's other things you cannot do with it, so first write down what are the things you want in your projec...
by Sweetalk
Tue Dec 19, 2023 12:51 am
Forum: FV-1 software questions
Topic: Roast my delay
Replies: 3
Views: 11520

Re: Roast my delay

WRAX ADDR_PTR,0 ;clear accumulator sof 0,0/code] This one also is a waste of an instruction, the accumulator is already cleared with the WRAX instruction, so you can delete it from the code. Besides from that the code will work, now you can start adding little things to it, step by step and start e...
by Sweetalk
Wed Sep 13, 2023 3:53 am
Forum: FV-1 hardware questions
Topic: Two FV1 sharing a common EEPROM?
Replies: 7
Views: 18170

Re: Two FV1 sharing a common EEPROM?

knutolai wrote: Wed Sep 13, 2023 12:04 am Thank you Frank. I'll go with 2 EEPROMs. Would there be an issue to have the S0 and S1 pins of the two FV1 chips share 1 toggle switch?
That you can do. Even use a DPDT toggle switch and use one circuit for each FV1
by Sweetalk
Fri Apr 21, 2023 1:57 am
Forum: FV-1 hardware questions
Topic: 2 FV-1 ICs and number of EEPROMs
Replies: 3
Views: 8315

Re: 2 FV-1 ICs and number of EEPROMs

The FV1 uses the EEPROM only when detects a change in the S lines or in the Internal/External pin, copies the program to the internal memory and stop using the I2C line. If you're using a microcontroller you can make a code that loads the program on the first FV1, waits the loading time and loads th...
by Sweetalk
Thu Sep 22, 2022 3:01 am
Forum: Algorithm development
Topic: Reverse engineering the auto-wah
Replies: 7
Views: 14293

Re: Reverse engineering the auto-wah

Awesome Frank, I have to get deep into that but I got the general idea. Cool idea to get a filter for the fast attack and another for the trailing
by Sweetalk
Tue Sep 20, 2022 1:27 am
Forum: Algorithm development
Topic: Reverse engineering the auto-wah
Replies: 7
Views: 14293

Re: Reverse engineering the auto-wah

This is one of the codes that I'm most intrigued and coulnd't figure it out so, bring the next!!
by Sweetalk
Tue Aug 02, 2022 2:08 am
Forum: FV-1 hardware questions
Topic: POTS VALUES
Replies: 3
Views: 6257

Re: POTS VALUES

And for the taper is mostly used the linear because you can manipulate the taper in the program the way you want.
by Sweetalk
Sat Jul 23, 2022 3:23 am
Forum: Algorithm development
Topic: WRLX and WLHX coeffient equations
Replies: 9
Views: 16990

Re: WRLX and WLHX coeffient equations

Next up, I am looking at the envelope/peak detector code in the auto-wah. That is one seriously dense bit of code and I even remember being on vacation in the San Juan Islands years ago when I figured out why some of it was done the way it was. Will contribute that when I get done. DL I burst my br...
by Sweetalk
Wed May 18, 2022 3:08 am
Forum: FV-1 hardware questions
Topic: Tying program select and unused pot pins to ground
Replies: 2
Views: 5638

Re: Tying program select and unused pot pins to ground

Pots can be leaved floating if the code does not read them. S0/S1/S2 has to go to GND or 3v3 to select the program properly, no resistor needed. When I design a PCB and some of those pins are not needed I tied them to ground or 3v3 according to the PCB needs.
by Sweetalk
Tue Apr 12, 2022 2:25 am
Forum: Algorithm development
Topic: Simple Noise Gate
Replies: 3
Views: 10001

Re: Simple Noise Gate

I have learned the above code, I have a question: OVER: wrax count, 0 ;if signal over threshold, clear count Is it possible to change to this: OVER: sof 0,0 wrax count, 0 ;if signal over threshold, clear count Used to ensure count is 0. I think you're right, when the code reaches the OVER label isn...
by Sweetalk
Wed Apr 06, 2022 2:30 am
Forum: FV-1 hardware questions
Topic: Serial connection
Replies: 6
Views: 9181

Re: Serial connection

Depending on some things in each code, you can put them together in the same program, use a skip routine to select which one is active (you'll loose a pot but maybe is not that big deal)
by Sweetalk
Wed Mar 02, 2022 11:43 am
Forum: FV-1 software questions
Topic: Use RMPA with Multiple Delay Lines?
Replies: 1
Views: 4958

Re: Use RMPA with Multiple Delay Lines?

RMPA maps the entire memory block, if you want to take from different memory blocks you have to manually set the address from each block like this: ; DELAY1 CLR ; Clear ACC OR DelayMem*256 ; Align memory base address on the acc [23:8] WRAX DelayBase, 0 ; Save OR DelayLength*256 ; Load the delay leng...
by Sweetalk
Tue Feb 15, 2022 2:30 am
Forum: FV-1 software questions
Topic: Range of DACL/DACR? LED rate indicator
Replies: 3
Views: 5597

Re: Range of DACL/DACR? LED rate indicator

When you write a 0 on the DAC, the output voltage will be 1.65v (3.3v/2 or Vref). To have 0v on the output you have to write a -1, but if you want to avoid the clipping led to light on just narrow the range a little bit, wrte -.9 and .9 instead of -1 / 1 or even -0.8 / 0.8. ;--- Rate indicator cho r...
by Sweetalk
Mon Nov 29, 2021 3:47 am
Forum: FV-1 hardware questions
Topic: FV-1 Pot Inputs - Using Digital Pot or DAC?
Replies: 6
Views: 10328

Re: FV-1 Pot Inputs - Using Digital Pot or DAC?

I use PWM for controlling pots via uC. let me know if I can be helpful So, are you using PWM to charge an external capacitor / resistor network or something like that then feeding that to the pot inputs to the FV-1? I feed the pot inputs of the FV1 after a low pass filter but done it directly with ...
by Sweetalk
Fri Nov 26, 2021 2:57 pm
Forum: FV-1 hardware questions
Topic: FV-1 Pot Inputs - Using Digital Pot or DAC?
Replies: 6
Views: 10328

Re: FV-1 Pot Inputs - Using Digital Pot or DAC?

I use PWM for controlling pots via uC. let me know if I can be helpful