See Data over sound in action Test our Raspberry PI Demo kit
Configuring an IoT device to connect to a network is typically complicated. The Trillbit DemoKit shows how Trillbit’s Data Over Sound technology can connect your IoT device to a network quickly and easily.
The Trillbit DemoKit is built using a Raspberry Pi 3 B+ with a custom Trillbit hat.
The hat has two MEMs microphones, an OLED display, a pair of status LEDs and a large reset button.
When powered up—or after pressing the reset button—the DemoKit enters provisioning mode, using the MEMS microphones to listen for an ultrasonic provisioning message. The message, played by your smartphone or laptop’s web browser, gives the Raspberry Pi the necessary information to connect to your WiFi network. As soon as it connects, the status light on the hat board lights up and a message appears in the OLED display.
Raspberry Pi 3 B+
Underneath the Trillbit DemoKit hat board is a Raspberry Pi 3 B+
It features a 1. 4GHz 64-bit quad-core ARMv8 CPU (BCM2837B0) with 1 GB RAM, Dual band 2. 4GHz and 5GHz WiFi b/g/n/ac LAN, Bluetooth 4.2 and BLE, Power Over Ethernet support, a display port and a camera interface. Not every IoT device has a processor as powerful as the Raspberry Pi. The Trillbit Data Over Sound technology also runs on much smaller processors, including the ARM processors.
OLED Display and status LED's
OLED display &
The Trillbit Hat board has a 128 x 64 pixel OLED display that shows the status of the network if the DemoKit is listening for WiFi credentials and the network name once it is connected.
The Trillbit Hat board has a 128 x 64 pixel OLED display that shows the status of the network if the DemoKit is listening for WiFi credentials and the network name once it is connected. There are two status LEDs on the Trillbit Hat. The left LED lights up whenever the system is powered on. The right LED lights up when the Raspberry Pi has established a connection with the WiFi network.
Microphones and buttons
Mounted on the underside of the Trillbit Hat are two MEMS (Micro Electronic Mechanical Systems) microphones which are used to listen for and decode the ultrasonic signals.
The Trillbit Hat has a reset button that causes the Raspberry Pi to forget the current network associations and to re-enter provisioning mode.
The Trillbit DemoKit ships with a pre-programmed 8 GByte micro SD card and a 5 volt USB power supply.
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