Hi Y'all
I have a cool one for you.
I have a wonderful tube guitar amp that I love
that has factory integrated FV-1 doing just reverb .... badly haha
I wont call any names, as it would be in bad taste
but this is a large amplifier company with a secondary line of korean pcb based amps
I will enclose pics soon
the fv-1 has pin 13 pulled to ground, and it has no eprom
so just to change 8 factory programs ... what is the simplest approach?
switches and pots, or a rotary encoder, or rotary switch?
can i use conventional amp toggle switches to input program change?
the data sheet shows one with 3 switches and 3 pots.
.. will that work without the 24lc32a eeprom ?
that would be ideal.
I saw a post that showed pulling specific pins to +3.3v or gnd, would select a specific preset. any refrence on that hiding around?
I also build some cool acoustic preamp buffers of my own
.... and a fv-1 could be a great component if this interfacing all works out.
many thanks
Willie
hardware access to internal programming
Moderator: frank
Re: hardware access to internal programming
The best solution is which ever you feel is best, any of them will work. Simpley depends on what parts you have/how much space to add parts/how much you want to spend on switches/etc.Archangel wrote: the fv-1 has pin 13 pulled to ground, and it has no eprom
so just to change 8 factory programs ... what is the simplest approach?
switches and pots, or a rotary encoder, or rotary switch?
can i use conventional amp toggle switches to input program change?
Yes it will, switches and pots are program dependent.Archangel wrote: the data sheet shows one with 3 switches and 3 pots.
.. will that work without the 24lc32a eeprom ?
that would be ideal.
In the datasheet.Archangel wrote: I saw a post that showed pulling specific pins to +3.3v or gnd, would select a specific preset. any refrence on that hiding around?
Frank Thomson
Experimental Noize
Experimental Noize
Thanks!
I wired up 3 push/pull dpdt pots
they are 250k though ...and not giving any adjustment, even at the far end of its travel
I will need to parallel a resistor with the pots elements
and bring the impedance down to 50k
am I reading the data sheet right in that the pots
wiper swings between ground and +3.3v
the switching is working great though!
I wired up 3 push/pull dpdt pots
they are 250k though ...and not giving any adjustment, even at the far end of its travel
I will need to parallel a resistor with the pots elements
and bring the impedance down to 50k
am I reading the data sheet right in that the pots
wiper swings between ground and +3.3v
the switching is working great though!
Yes, one end of POT to gnd, other to 3.3 and wiper to pin.Archangel wrote:Thanks!
am I reading the data sheet right in that the pots
wiper swings between ground and +3.3v
Frank Thomson
Experimental Noize
Experimental Noize
Frank thanks for taking the time with a silly guitar amp question. As it turns out the custom program set from the manufacturer was not too useful .... Pitch shifted tremolo for example.
However ... I build reference quality acoustic preamp buffer line drivers. I use gold plated black solder masked beautiful boards and a BB opa2134 . I am designing a new one that uses a ssm2166 for parallel compression and to have effects would be great
The scrm boards are pretty cool
I will talk to you more about those soon
And I have a pretty cool tube amp for a development platform now haha
However ... I build reference quality acoustic preamp buffer line drivers. I use gold plated black solder masked beautiful boards and a BB opa2134 . I am designing a new one that uses a ssm2166 for parallel compression and to have effects would be great
The scrm boards are pretty cool
I will talk to you more about those soon
And I have a pretty cool tube amp for a development platform now haha
modding devices with FV-1s in them
Hey, that's a cool idea, to find devices that use the FV-1 and put whatever program you like in them!
I noticed there's a dual-ipod mixer out there from Radio shack that uses the FV-1.... That could a fun platform, too
I noticed there's a dual-ipod mixer out there from Radio shack that uses the FV-1.... That could a fun platform, too