>> Application info || Technical specs
The Wi-microDig is a thumb-sized easily configurable hardware device that encodes upto 8 analog sensor signals to multimedia industry compatible messages with high resolution and transmits these messages wirelessly to a computer in real-time for analysis and/or control purposes.
Sensitive in real-time
It has 8 inputs of each 10 bits resolution (1024 steps of each 4.9 mV) that can sample at upto 1500 Hz with milliseconds latency to capture even the finest gestures and movements. Use it conveniently with our sensors to create your interactive installation, ultimate controller, .. For hardware hackers, the Wi-microDig features a hardware hacking area to add your own sensor circuit.
The wireless transmission complies with the Bluetooth v2.0 standard (using the WIDCOMM or Microsoft Bluetooth protocol stack, but not the Bluesoleil stack), which is a common and reliable protocol that is legal to use anywhere in the world, and at 115 kbs much faster than MIDI speed. The wireless range of the Wi-microDig is guaranteed upto 100 meter (without obstructions), since it is a Bluetooth class 1 device ! To get the maximum range of 100 meter you will also need a class 1 Bluetooth interface for your computer (note that the built-in Bluetooth interface in Apple computers is class 2 with a much lower range). A Bluetooth interface allows for the use of upto 7 Wi-microDig units simultaneously so it's possible to make a wireless sensor network.
firmware v6.1 enables it to operate in both "standalone" mode (sensor data is processed before it is transmitted) as well as host mode (raw sensor data is transmitted). Standalone mode includes various sensor processing and mapping features such as gesture recognition that can be conveniently configured using one of our editors. Configure it with the editor and it will remember the settings after power down. If you need raw sensor data or if you need more sensor mapping or analysis complexity, use it in host mode in combination with a programming or analysis environment to process the sensor data.
Even though it encodes analog (0-5V) sensor signals to multimedia industry compliant MIDI messages, you don't need a MIDI interface to receive them. Because the Wi-microDig uses Bluetooth, the MIDI messages appear on the computer at a virtual serial port (called "COM" port on a Windows computer). Our editor software takes the data from there and allows you to route the data in a variety of ways to the software or device of your choice. Once configured using our editor you can use the Wi-microDig with software that communicates directly with devices through the virtual serial port. Our Link software has even more capabilities. Or you can use our BlueMIDI application to map the data to/from the serial port from/to a virtual MIDI port. On the sensor input side, note the Wi-microDig's I2C capability which is one of the more common bi-directional communications protocols used in robotics for sensors and actuators - connect upto 4 I2C devices directly to it. But you can connect many more I2C devices, since they can be daisy-chained !.
Get it now !
It is sold as part of the Wi-microSystem. To get the maximum range of 100 m you will need a class 1 Bluetooth interface. The BluetoothAdapter has both these features. Need more battery power ? Try the BatteryPack-2000. Want to use the power grid instead of batteries ? Use the Wi-microGlobalAdapter.
For a thumb-sized, USB-cabled version (no MIDI interface needed) with actuator outputs, check out the USB-microDig, that, together with the USB-microMIDICable can also send MIDI messages directly to your MIDI gear.
For more inputs and resolution, as well as actuator outputs,
check out the Digitizer.
||Wi-microDig (Digitizer v6.00/6.1)|
||hardware v6.00, firmware v6.1|
|Number of inputs
||8 (of which each pair of inputs 1-2, 3-4, 5-6, 7-8 can be used as an I2C port)|
||0 to 5 Volt|
||10 bit or 7 bit (user selectable)|
||programmable from 0 ms (min) - 16380 ms (max) in steps of 1 ms (actual sampling rate below)|
||active inputs (signal processing disabled)|
||20 ms (one active input without signal processing)|
||greater than 10 MOhm|
|Signal processing functions
scaling (0.04 Volt min range leaving 3-bit resolution)
threshold detection (0.04 Volt min step)
peak/dip detection (over 16 samples max)
averaging (over 16 samples max)
differentiation (between 2 consecutive samples only)
noise gate (5 Volt max range)
||30 mA per sensor (typical)|
||MIDI channel voice protocol:|
MIDI pitch-bend (10 bit resolution)
MIDI note-on/off, key-pressure, control-change, program- change or after-touch (7 bit resolution)
See firmware documentation for details
||MIDI system exclusive protocol:|
See firmware documentation for details
||Bluetooth® v2.0 class 1 (range: 100 m non-obstructed; serial port profile: 115 kbs, no parity, 1 stop bit, 8 data bits, data flow ON)|
||3-pin column (2.54 mm / 0.1" spaced), for each of the 8 inputs|
||5 pin DIN (input, output with software switch-able thru) |
||7.5 V / 0.3 A, 9V battery plug |
||61 x 21 x 14 mm (2.4 x 0.83 x 0.55 inch)
||0.02 kg ( oz), excl. power supply|
We are not aware of any bugs at this time. Please notify us if you think you may have encountered one.