We produced a limited number of devices and are now able to distribute those devices. If you are a developer working on related projects or want one device for your Medialab, Hackerspace, School, University or Radiostation.
Don’t hesitate to contact us (georg <at> otelo.or.at)
Today I made an effort to get the KiCad Files working (previously there was a need for a special KiCad GOST version)
So now you can donwload the updated KiCad-files here
Tested with the current KiCad 0.201509040901+6154~29~ubuntu14.04.1
some weeks ago I had to exchange an OggStreamer because one channel was not working – the user Mike recorded the following video to demonstrate the problem:
If you watch the video closely you can see that the left channel is always amplifying the Audio with a very high gain – and only as he turns the gain up also the right channel appears – actually it is the right channel that is working correctly and the left has an error where it has a very high gain.
Looking at the schematics reveals that a connection error to the Potentiometer (which is in the Feedback loop) could cause such a high gain of the inverting amplifier:
So a loose connector is my first guess. My second guess would be a faulty potentiometer.
Lets take the device apart:
gently push the whole assembly (top and pcb) out of the extruded alluminium case:
A quick look around and touching cables reveals the problem:
because I had a spare contact lying around i soldered on a new contact, but elsewise I could have recycled the orignial one:
Time to put everything to gether and check if it works:
both channels work now 🙂 success.
I just added a small but neat feature I want to include in the V1.0 of the OggStreamer firmware – it is a user interface that allows to control the optional LEDs on the right side of the device.
How it works – the main application (oggs_app) is creating a named pipe in the temporary directory, the name of the file is /tmp/userleds
so the following command will set the optional green led on
echo 1 > /tmp/userleds
you can send any parameter from 0 to 7 to /tmp/userleds. The parameter is interpreted as binary representation of the leds. 1 is the GREEN led, 2 is the YELLOW led, 4 is the RED led. 0 is all leds OFF and 7 is all leds ON
this feature unfolds its potential when you combine it with shell scripts – for example – everyone likes blinking LEDs.
while [ 1 ]; do
echo 7 > /tmp/userleds
echo 0 > / tmp/userleds
But also more useful tasks can be done, for example monitoring whether an IPAddr can be pinged.
while [ 1 ]; do
ping -c 1 $1
if [ "$?" == "1" ]; then
#ping did not succed -> display RED Led
echo 4 > /tmp/userleds
#ping did succed -> display GREEN Led
echo 1 > /tmp/userleds
it has been a while since there was an official Firmware Update for the OggStreamer – now it is time to release RC3 (maybe the last Release Candidate before V1.0)
- Working WebGUI-Firmware upload (until RC3 you had to use the Command Line Tools)
- Support for MP3 completed
- Patches for AudioDSP are now working (fixes high pitch mp3 issues, and incorrect samplerates)
- Support for DynDNS – Services like FreeDNS, DynDNS and many more
- Support for the ShoutCast (ICY) and legacy IceCast1 Protocol
- Cleaner Code for WebGUI – now using libcgi to be compliant to GPL
Where to get it:
The upload_firmware.sh script and the update-rc3.tgz can be found in the repositories if you want to update from a UNIX like environment
For windows download the updater tool here
Once you installed RC3 on your OggStreamer future updates can be done via the WebGUI 😉
I had the chance to present the OggStreamer at Medialab Prado and I was also talking about some random thoughts about OpenHardware and the Open Technology Laboratory in Austria http://otelo.or.at
(click on the image to get to the video)
Many thanks to the people at MediaLab who made this talk possible 😉
For the last year the OggStreamer-Project was generously supported by the “NetIdee“- Program from the Internet Foundation Austria.
This Support allowed us to push the Software of this Project to “Release Candidate 1”-Status, Release a OggStreamer-SDK and also made it possible to produce a small-series of 54 Devices.
If you are doing OpenSource / PublicDomain / OpenSourceHardware Projects which are related to the Internet and Austria, the NetIdee Project might be a way to obtain some funding – (Their yearly Calls end usually in August)
Thanks a lot NetIdee!
The final report for the OggStreamer/NetIdee Project can be downloaded here (it is in German only).
For the OggStreamer frontpanel I needed to come up with a solution to produce light-guides that direct the light from the VU-Meter, Power and On-Air LEDs. The first Idea was to use a 3D Printer and print this light-guides out of transparent PLA. But after trying to imaging how the light-guides would look like, I gave up on this Idea and developed a different process for this. Now I am using the transparent properties of Hot-Glue to act as light-guide and glue the LED-PCB in Place at the same time. The transparent Hot-Glue fills all the space of the CNC-punched holes in the aluminum front-panel. In order to produce a smooth surface I am using a glass plate.
Step 1: You will have to apply a lubricant on the glass plate to form a thin oily film so that the Hot-Glue doesn’t stick to good on the glass – which would make separating the completed assemble from the glass a pain in the a**. (Notice the broken glass plate from our attempts without lubricant!!) WARNING: You are using a glass plate, which can break and have sharp edges. So be careful and don’t apply excessive force – If your assembly got stuck on the glass plate you can use a Hot-Air-Gun to separate it, clean it and repeat the process.
Step 2: Evenly spread the lubricant – don’t wipe it of the plate, but try to produce a tiny but consistent film on the glass plate, without producing droplets.
Step 3: Fix the aluminum front-panel with office clips to the glass plate – adjust the office clips in a way so that they will help you aligning the LED-PCB.
Step 4: Wait till your Hot-Glue Gun has reached steady temperature and begin applying the Hot-Glue just over the holes of Power and OnAir LED. Remember to do this and the following steps quickly, because you only have a limited time windows to apply the LED-PCB proper.
Step 5: Do the same for the VU-Meter holes.
Step 6: Once all glue is applied gently push in the LED-PCB – So that the still liquid Hot-Glue is pushed towards the glass plate.
Step 7: The Hot-Glue is still liquid for a few seconds, you can use the time to turn around the glass plate to see if the LED-PCB is properly aligned and if needed adjust its position.
Step 8: Let the assembly cool down – if you are producing more then one unit, you can use this time to prepare the next one.
Step 9: Remove the cooled down assembly gently – you shouldn’t need to much force – as the applied lubricant forms a layer between the HotGlue and the glass. In any case be careful – you are handeling a glass plate which has the chance to break – The glass plate you see in the picture broke because we were trying to seperate the assembly from the glass plate using a screw driver.
Step 10: Now you can start installing the push button and the potentiometer – We start with the push button first. Take care not to forget about the elastics ring that comes with the push button.
Step 11: Insert the push button from the TOP side.
Step 12: Mount the Pushbutton with plastic Nut – the force of your fingers is enough to mount the plastic nut securly in place
Step 13: Insert the Potentiometer-PCB from the BOTTOM side.
Step 14: Place the washer and the Nut for the Potentiometer from the TOP Side. And gently fix it with the flat wrench.
Step 15: Press the prepared Potentiometer Knob on the the Potentiometer – You might need to use a drill (6mm) to prepare the Knob. Only push the Knob with gentle force.
Step 16: Use the corner of a Table (or something similar) to support the Potentiometer from the backside and apply a bit more force so that the Potentiometer Knob is securely mounted to the Potentiometer.
Step 17: Glue the cable of the push button according to the picture. (optional)
The final result:
Although this process works very well – you need to take into account that gluing the PCB in Place makes it a bit harder to repair or replace. You will need to use a Hot Air-Gun to separate the aluminum front-panel from the LED-PCB, further you will need a little patience to remove the glue residue. But it is definitvly doable.
We proudly announce our KiCad Conversion of the original PCAD2006 Design.
You can download it from the repo here
Note: This version was tested with KiCAD (BZR4213 GOST) – The currently available Windows-Installer from kicad-pcb.org ( KiCad_stable-2013.07.07-BZR4022_Win_full_version.exe ) is known to make Problems parsing the PCB File (Schematics works fine though).
here is the release of the OggStreamerSDK-RC1 – for the first time we are able to have a whole integrated SDK which supplies all the Files / Applications needed for the complete OggStreamer Firmware.
If you want to experiment yourself I put together the info on the Wiki:
OggStremaer SDK RC1
Note it is RC1 and still has a number of flaws, please have a look at our ticketsystem:
RC1 Flaws Tickets
happy OggStreamer – hacking 😉