Search found 78 matches
- Jan 5th, '18, 22:58
- Forum: Nava Hardware
- Topic: Cymbal decays
- Replies: 16
- Views: 12484
Re: Cymbal decays
Diode check sounds good. One of my mistakes at the time was that I only measured in-circuit. I put the 2SA798's in sockets when I replaced them. I now have a Peak transistor checker but that's overkill for diagnosing if a transistor is fried. :) The EG circuit is not that big so you should be able t...
- Jan 5th, '18, 13:14
- Forum: Nava Hardware
- Topic: Cymbal decays
- Replies: 16
- Views: 12484
Re: Cymbal decays
Yes that sounds right. One thing: I don't think that crash and ride share their accent in the Nava. That is the case in the original 909 but not here. You can verify this by checking for continuity on the accent inputs between crash and ride. There should not be continuity. How did you check the 2SA...
- Jan 4th, '18, 18:45
- Forum: Nava Hardware
- Topic: Cymbal decays
- Replies: 16
- Views: 12484
Re: Cymbal decays
I had issues with my crash/ride because of bad 2SA798 transistors. Worth checking.
Search on this forum, you can hack a replacement from cheaper single transistors. Originals are ridiculously expensive.
- Dec 6th, '17, 19:02
- Forum: Nava Hardware
- Topic: Nava Last Update: Accent improvement
- Replies: 33
- Views: 38050
Re: Nava Last Update: Accent improvement
I received my PCB's today. Thanks Vincent! I have a question about the BOM. It lists this part: https://nl.mouser.com/Search/ProductDetail.aspx?R=68602-404HLFvirtualkey64910000virtualkey649-68602-404HLF Mouser 649-68602-404HLF This is a 2x2 block of pins. But the header this is supposed to be solder...
- Nov 8th, '17, 00:04
- Forum: Nava Hardware
- Topic: Nava Last Update: Accent improvement
- Replies: 33
- Views: 38050
Re: Nava Last Update: Accent improvement
It also looks like the new sample&hold circuits use much smaller capacitors (from 470nF to 470pF). I've noticed that the settling time of the previous circuit is quite long; I ended up adding sleep statements in the firmware of about 100us. More conjecture: It looks like the TL074 (used in the n...
- Nov 7th, '17, 23:35
- Forum: Nava Hardware
- Topic: Nava Last Update: Accent improvement
- Replies: 33
- Views: 38050
Re: Nava Last Update: Accent improvement
This is very interesting. :) I've been trying to write my own Nava firmware for fun and the accents have proven challenging. Here is how I understand what these new boards are changing. First, some background on a difference between the 909 and the Nava. Each instrument has an accent input which is ...
- Sep 28th, '17, 18:11
- Forum: Yocto v1.0 Software
- Topic: is firmware public ?
- Replies: 34
- Views: 63668
Re: is firmware public ?
Yes I only use MIDI one-way, to upload firmware. My workflow is: - compile new firmware - restart Yocto in bootloader mode (1-3-5) - send firmware - test by using the Yocto interface or by sending MIDI from the computer I don't need to switch MIDI cables while doing this because the computer that do...
- Sep 28th, '17, 18:04
- Forum: Yocto v1.0 Software
- Topic: Yocto build script
- Replies: 10
- Views: 24974
Re: Yocto build script
I have noticed that size difference too and I don't know why it is. Might be because of a different -O optimization level on avr-gcc, I don't know what Arduino uses. How do you know the Yocto is ignoring the new firmware? I've had issues too where new firmware seemed to be accepted by the bootloader...
- Sep 25th, '17, 08:20
- Forum: Yocto v1.0 Software
- Topic: is firmware public ?
- Replies: 34
- Views: 63668
Re: is firmware public ?
What I like about using MIDI to flash the firmware is that I don't have to open up the box. It's not the fastest thing, sure, but it works. I wrote a little script here that converts firmware from binary to the sysex format used by the Yocto/Nava bootloader. https://gitlab.com/jacobvosmaer/yocto-bui...
- Sep 25th, '17, 08:04
- Forum: Yocto v1.0 Software
- Topic: Serial Communication from the Yocto
- Replies: 5
- Views: 16324
Re: Serial Communication from the Yocto
Neat!
I've been doing my debugging in a very crude way, by lighting up LED's. Using the serial port must be much nicer.
I've been doing my debugging in a very crude way, by lighting up LED's. Using the serial port must be much nicer.