Right - the EEPROMs are not all that expensive, but in order to use more than 8 programs, I need to enable and disable every other EEPROM, which takes more digital pins on the Arduino to do so in the event of 4 EEPROMs versus 3 EEPROMs,
thanks,
BC
Search found 16 matches
- Fri Apr 21, 2023 9:23 am
- Forum: FV-1 hardware questions
- Topic: 2 FV-1 ICs and number of EEPROMs
- Replies: 3
- Views: 8772
- Thu Apr 20, 2023 3:12 pm
- Forum: FV-1 hardware questions
- Topic: 2 FV-1 ICs and number of EEPROMs
- Replies: 3
- Views: 8772
2 FV-1 ICs and number of EEPROMs
Hi, I'm currently working on a project with two channels that each have their own (mono) FV-1. I change the programs on both FV-1 ICs by means of an Arduino. The Arduino changes the programs of each FV1 by means of dedicated digital lines. I use 2 EEPROMs which the Arduiino enables or disables, depe...
- Thu Apr 20, 2023 5:40 am
- Forum: FV-1 hardware questions
- Topic: Using several EEPROMNs to have more than 8 programs
- Replies: 9
- Views: 22251
Re: Using several EEPROMNs to have more than 8 programs
Small update, I did not find any way to combine the outputs of 2 74HC148 ICs, so I decided to switch to a Arduino Nano so I can deal with the timing in software.
BC
BC
- Mon Apr 17, 2023 5:53 pm
- Forum: FV-1 hardware questions
- Topic: Using several EEPROMNs to have more than 8 programs
- Replies: 9
- Views: 22251
Re: Using several EEPROMNs to have more than 8 programs
I think I need to use some sort of flip-flop that addresses one EEPROM while the other one is "un-adressed". A simple inverter should do, one EEPROM is addressed by the debounced switch and the other by the debounced switch through the inverter. As long as A0 (or which ever pin is conveni...
- Mon Apr 17, 2023 2:22 pm
- Forum: FV-1 hardware questions
- Topic: Using several EEPROMNs to have more than 8 programs
- Replies: 9
- Views: 22251
Re: Using several EEPROMNs to have more than 8 programs
Hi Frank, I was indeed thinking about adding an RC network to avoid bouncing. Now you mention it, it dawns on me the RC can also be used to slow down the program select enough to allow the EEPROMs for being switched. I think I need to use some sort of flip-flop that addresses one EEPROM while the ot...
- Sun Apr 16, 2023 7:39 am
- Forum: FV-1 hardware questions
- Topic: Using several EEPROMNs to have more than 8 programs
- Replies: 9
- Views: 22251
Re: Using several EEPROMNs to have more than 8 programs
You can have more tan 8 but you need to disable one EEPROM so that one of the address pins is at +3.3V as the FV-1 reads the device where A2=A1=A0=0V After changing the A pin you need to make the FV-1 read in the program from the enabled EEPROM by changing the S pins to the new program. Of course i...
- Thu Apr 13, 2023 5:52 am
- Forum: FV-1 hardware questions
- Topic: Dry/Wet functionality
- Replies: 3
- Views: 9197
- Wed Apr 12, 2023 5:23 pm
- Forum: FV-1 hardware questions
- Topic: Dry/Wet functionality
- Replies: 3
- Views: 9197
Re: Dry/Wet functionality
Cheers Frank, I'll research that site and post my design here.
BC
BC
- Wed Apr 12, 2023 3:46 pm
- Forum: FV-1 hardware questions
- Topic: Dry/Wet functionality
- Replies: 3
- Views: 9197
Dry/Wet functionality
Hi,
is there any info on howto implement a dry/wet knob for the effects?
Cheers!
BC
is there any info on howto implement a dry/wet knob for the effects?
Cheers!
BC
- Mon Mar 27, 2023 3:10 pm
- Forum: FV-1 hardware questions
- Topic: Error in datasheet?
- Replies: 1
- Views: 8148
Error in datasheet?
Hi,
I think I might have found a problem in the datasheet. Where the 50K pots are linked together, the line goes to DVD. A junction symbol seems to miss there. Am I correct?
Cheers,
BC
I think I might have found a problem in the datasheet. Where the 50K pots are linked together, the line goes to DVD. A junction symbol seems to miss there. Am I correct?
Cheers,
BC
- Mon Mar 27, 2023 6:19 am
- Forum: FV-1 hardware questions
- Topic: Vf-1 chips availability
- Replies: 2
- Views: 8686
Re: Vf-1 chips availability
OK, right, thanks - I figured they were indeed following the forum. I also thought you were a Spin employee. Sorry for the confusion,
BC
BC
- Sat Mar 25, 2023 9:26 am
- Forum: FV-1 hardware questions
- Topic: Vf-1 chips availability
- Replies: 2
- Views: 8686
Vf-1 chips availability
Hi all,
I'm planning to use the VF-1 in a commercial product and was wondering what to expect of the availability of these chips in the future. Will they be produced for quite some time?
Cheers!
BC
I'm planning to use the VF-1 in a commercial product and was wondering what to expect of the availability of these chips in the future. Will they be produced for quite some time?
Cheers!
BC
- Thu Mar 23, 2023 1:29 pm
- Forum: FV-1 hardware questions
- Topic: Using several EEPROMNs to have more than 8 programs
- Replies: 9
- Views: 22251
Re: Using several EEPROMNs to have more than 8 programs
Hi Frank,
makes sense, thanks.
The problem of the same program might be fixed by a rotary switch to select programs. To get to a different program you will switch up or down to another program and it will always be different from the original program. But do correct me if I'm wrong.
Cheers,
BC
makes sense, thanks.
The problem of the same program might be fixed by a rotary switch to select programs. To get to a different program you will switch up or down to another program and it will always be different from the original program. But do correct me if I'm wrong.
Cheers,
BC
- Wed Mar 22, 2023 1:13 pm
- Forum: FV-1 hardware questions
- Topic: more than 8 programs?
- Replies: 13
- Views: 29541
Re:
There are a number of way to add more than 8 programs, the simplest method would be to use more than one eeprom on the i2c bus this would provide multiples of 8 ie 3 eeproms =24 programs. Another way would be to use a micro controller which has internal eeprom space which would send the selected pr...
- Wed Mar 22, 2023 1:02 pm
- Forum: FV-1 hardware questions
- Topic: Using several EEPROMNs to have more than 8 programs
- Replies: 9
- Views: 22251
Re: Using several EEPROMNs to have more than 8 programs
OK, I put some of the PDF in Google Translate and apparently the author says he uses just one of the EEPROMs at the same time. I suppose he uses DIL sockets. J5 seems to be for his EEPROM programmer. So at this point it does not seem to be possible to have more than 8 programs, is this correct? Chee...