Search found 116 matches

by slacker
Sat May 19, 2018 10:58 am
Forum: Algorithm development
Topic: tap tempo snippet
Replies: 84
Views: 934388

You might be able to do it with less code, I don't think lowpass filtering will help though the pot inputs are already lowpass filtered. You could try reading the pot input and if it's below some threshold flip the "latch" value, then have a counter to create delay before you check the swi...
by slacker
Sun Sep 03, 2017 5:27 am
Forum: FV-1 software questions
Topic: ping pong delay?
Replies: 4
Views: 11228

If you make the value of smooth in this line larger you will get less pitch bending try different values up to 1. equ smooth 0.001 ;Smoothing coefficient, adjust to change speed/zippernoise or just delete these lines rdfx ping_addr, smooth ; Smooth it : (target - current) * C + current rdfx pong_add...
by slacker
Tue Aug 15, 2017 9:56 am
Forum: FV-1 software questions
Topic: eeprom programer
Replies: 2
Views: 6254

Here's a very simple one, that will work with either a PC serial port or a USB to serial converter.

http://www.spinsemi.com/forum/viewtopic ... light=dirt
by slacker
Sat Aug 05, 2017 2:14 am
Forum: Algorithm development
Topic: tap tempo snippet
Replies: 84
Views: 934388

Yeah just an emitter follower, I stick a 100k resistor between the FV-1 output and the base of the transistor but may not be needed. Something like this example, pretty much any NPN will work, adjust resistor value to taste. https://www.mixdown.ca/redmine/attachments/download/129/emitter_follower.gif
by slacker
Fri Jul 21, 2017 9:34 am
Forum: FV-1 hardware questions
Topic: 7segment
Replies: 4
Views: 8400

MC14495 or DM9368 chips can display 0 - 9 and A - F which gives 16 values in hex. The chips are obsolete but you can still buy them on ebay and other places.
by slacker
Thu Jul 20, 2017 11:01 am
Forum: FV-1 hardware questions
Topic: 7segment
Replies: 4
Views: 8400

If you just want to display the program number you don't need a micro controller. There are 7 segment display controller chips you could use. Have a look at this for some examples. http://www.electronics-tutorials.ws/combination/comb_6.html You would just connect the inputs of the chip to the S0, S1...
by slacker
Thu Jul 13, 2017 10:14 am
Forum: FV-1 software questions
Topic: Glitch/power off at minimum pot value?
Replies: 9
Views: 11634

I've done this be putting 2 resistors in series between the wiper of the pot and the pot input on the FV-1. One side of the momentary switch then goes to the junction of the two resistors and the other side to 3.3 Volts. This stops the switch shorting out the pot but doesn't affect normal operation....
by slacker
Wed Jul 12, 2017 10:49 am
Forum: Algorithm development
Topic: Spring reverb
Replies: 35
Views: 106364

Like Frank says it looks like it's reading something in the file as code that it shouldn't be. I had similar problems trying to run spinAsm using Wine in Linux, unfortunately I never got to the bottom of it. Any chance you could post a copy of your spn file so someone can download it and see if it w...
by slacker
Mon May 08, 2017 10:07 am
Forum: FV-1 software questions
Topic: rom_fla_rev.spn not functioning
Replies: 27
Views: 31299

Good to hear you've found a way to make it work. Are you using Slavakian language format in Windows? If I change to that I get the same problem, it seems to do the same thing with any language that uses the comma as the "decimal symbol" for example French. Changing to use the dot/period as...
by slacker
Sat May 06, 2017 6:26 am
Forum: FV-1 software questions
Topic: rom_fla_rev.spn not functioning
Replies: 27
Views: 31299

I ran your hex file through Igor's online disassembler and the first difference in your hex file seems to be why pot1 isn't doing anything. The last line of this bit of code from the spn file multiplies the value from pot1 by 0.001. rdax pot1, 1.0 ;read pot1 mulx pot1 ;square value, range = 0 to 1 s...
by slacker
Sat May 06, 2017 5:55 am
Forum: FV-1 software questions
Topic: rom_fla_rev.spn not functioning
Replies: 27
Views: 31299

Have you compared how it works to the built in flanger program (program 1) it should be the same as far as i know. I don't know if this is the cause of the problem but the hex file you posted has two lines that are different to the hex file I get if I build the rom_fla_rev.spn code. The top row in e...
by slacker
Thu Jan 26, 2017 11:27 am
Forum: FV-1 software questions
Topic: Truncating a pot input
Replies: 5
Views: 8365

There's some useful examples of manipulating pot inputs, including nice graphs to help visualise whats going on in the knowledge base.
http://www.spinsemi.com/knowledge_base/ ... Pot_inputs scroll down a bit.
by slacker
Tue Jul 12, 2016 10:03 am
Forum: FV-1 hardware questions
Topic: more than 8 programs?
Replies: 13
Views: 28111

Thanks for sharing that Jack, pretty neat and looks easy enough to implement.
by slacker
Sun Jul 10, 2016 12:21 pm
Forum: Algorithm development
Topic: Pulse and Ramp Switch Control
Replies: 8
Views: 12223

The code in your first post probably isn't doing what you want it to. If the pot is 0.5 or more, then the first SKP instruction skips to "reset" which then skips to "ENDDB". If the pot is less than 0.5 then it runs this part of the code sof 0,0 wrax db,0 sof 0,0.5 The sof 0,0.5 i...
by slacker
Fri Jul 08, 2016 10:44 am
Forum: FV-1 hardware questions
Topic: more than 8 programs?
Replies: 13
Views: 28111

Thank you :) I am curious how to go about this, if anyone has tried or knows of some info on how I would send the data from the micro controller or how the eeprom of the fv1 gets its address read. I would assume I need to use a few digital pins of the micro i2c and find a way to have it emulate an ...