Messages

1

preenfm2 and preenfm3 / Re: PCB Only/BOM problem reports

« on: December 02, 2013, 06:39:10 AM »

I received my black case from Pokono and it looks awesome, however it's missing two holes for holding the front plate. I checked the .svg and it's also missing on it. Now I can't attach it :/

2

preenfm2 and preenfm3 / Re: PCB Only/BOM problem reports

« on: November 24, 2013, 01:57:38 AM »

Here is an article about the changed init code: http://www.elcojacobs.com/controlling-an-oled-character-display-with-arduino/

3

preenfm2 and preenfm3 / Re: PCB Only/BOM problem reports

« on: November 22, 2013, 09:00:11 PM »

Ah okay. I see

I can't wait to get the display. I want to play with it! I ordered the black/white from your suggested site.

At first I wanted to order a oled display. This needs a custom display init code. You would only need to change a few lines for it. Else it's hd44770 compatible.  Just in case someone is wondering.

Another thing: I personally prefer midi jacks that are soldered directly to the pcb. This minimize the need of cables and work and allows to use the synth without case. It also looks cleaner to me. I checked the pcb and there should be enough room for through hole jacks.

Oh and you mentioned on facebook that I could order the case on ponoko/formulor. How?

4

preenfm2 and preenfm3 / Re: PCB Only/BOM problem reports

« on: November 22, 2013, 04:26:33 PM »

Sorry for the false alarm, everything is working fine.

Because I still don't have the lcd display, i was confused, if it's working. However USB midi showed me the device on my mac and I could play notes Awesome synth.

A suggestion:
Replace the two headers for usb connection with a female usb a connector. I found the process of soldering the cable a bit hard. I destroyed the mouser mini male connector, because the pins were too close each other and I melted the plastic. 0.3m mini usb cables are everywhere available and it would allow to just connect the cable without soldering.

5

preenfm2 and preenfm3 / Re: Re: PreenFM2 Bug report

« on: November 22, 2013, 12:33:10 AM »

Okay, I finished everything. I still didn't got my display, but it should work without display, right?
Unfortunately I can't get it to work :/ Jumper 1 and 2 are closed.

I uploaded the bootloader and firmware to the cerb40, which worked great (I set a jumper to jump3 and connected a usb cable directly to the mini usb connector of cerb).

(btw. I didn't add any capacitor on the 330nf place)

Now nothing works (except puting it again to dfu).
- If I connect an usb cable directly to the cerb I can't see any device on my computer (if cerb isn't in dfu mode)
- If i connect a 9v 1a to it, nothing happens. I tried so send midi notes to it via the din5 connector, but it isn't working.
- The only thing I can see is my blinking usb storage stick if I connect it to the usb connection.

Any idea why? :/

Oh and for what is the usb connection (not the host one for usb storage)? Only for usb midi or also for powering it without power cable? If also for powering, it isn't working either. :/

Without display it's of course hard to see, if it's running. Should the led blink if it's receive midi notes? And how can I activate usb midi blind without display?

6

preenfm2 and preenfm3 / PCB Only/BOM problem reports

« on: November 21, 2013, 05:14:17 PM »

1. You forgot to mention the 330nF capacitor in the bom. Now I need to make a new order for it :/ Or can I use something else?
2. I ordered the encoder alternative PEC11R. Unfortunatly it has 2 pins to much (on the other side). Should I cut them?
3. The mini usb connector (female) looks different. How should I solder?



Thanks

7

preenfm2 and preenfm3 / Re: PreenFM mk2 : Continuing the discussion from the Mutable Instruments forum

« on: November 15, 2013, 10:37:47 PM »

I nearly finished my PreenFM 2. I'm still waiting on my Cerb40, but it should be here tomorrow

What's with the three headers P1-3? In the pcb files I read something about Shruthi-1 Filter o0