Open Sound - WiFi Router for OSC Midi

Rebel Technology

The Open Sound Module is a WiFi connectivity module. It sets up a wireless network connection directly with your modular synthesizer. The OSM has two CV inputs and two CV outputs, along with two trigger inputs and outputs, for bi-directional wireless communication.

Use the OSM to connect your modular synthesizer to your mobile phone, tablet, laptop, local network or the mighty internet. Use two OSMs to connect together two racks, whether they are in the same room, or even the same continent. Use many to make the biggest modular synthesizer in the world! Programs like TouchOSC for the iPad allow you to create your own custom wireless controller!

The OSM communicates using the OSC protocol. It can connect to your local WiFi network or set up its own access point. The Open Sound Module embeds a small web server, enabling you to control and configure the device with a browser.


The module sends an OSC message when there is a change in the signal connected to an input jack. When it receives a matching OSC message it changes the signal at the corresponding output jack. Default address mappings and value ranges are shown below, they can be changed in the web configuration.


Default mappings: /osm/a/tr and /osm/b/tr OSM sends trigger messages with one integer argument: 0 for off / low, 1 for on / high.
The module handles trigger input messages with either no argument, with an integer argument, or with a float argument.
No argument: toggle.
Integer argument: 0 for off, 1 for on.
Float argument: less than 0.5 for off, more than 0.5 for on.


Default mappings: /osm/a/cv and /osm/b/cv
OSM sends CV messages with one float argument: 0.0 to 1.0 for a unipolar input signal from 0 to 5v, or -1.0 to 1.0 for a bipolar input signal from -5 to 5v. The module handles CV messages with either a float or an integer argument.
Float -1 to 1, or integer 0 to 4095 (12 bits) for an output signal from -5 to 5v.



WiFi: 802.11b/g/n
Security: WEP/WPA/WPA2
Access Point and WiFi Client
Embedded Open Sound Control server
Embedded web server
12bit Analogue to Digital converters
12bit Digital to Analogue converters
Latency down to 12ms round trip (send and receive)


2 CV inputs
2 CV outputs
2 gate/trigger in
2 gate/trigger out

Dimensions Width: 6HP
+12v: 250mA
-12v: 20
Depth: 32mm
PTC fuse and diode protected

Open Sound Module from pingdynasty on Vimeo.