Relate hardware devices
The following hardware has been developed as part of the Relate project. All devices use 40kHz ultrasonic transducers and Particle Computers as their communications board. They are all compatible and will work together if programmed with the correct firmware.
The Relate Dongle is a small device with a USB connector and three ultrasound transducers. The core board is a Particle Computer (note that only the 1/8x version will fit in the casing). The dongle is powered from the USB port.
The Relate Brick is a sensor node in a square case. The brick can run independently with its own battery, or can be connected via USB to a host computer for transferring data and recharging. Four ultrasound transducers are used for positioning. An 8-pin expansion socket gives access to the I2C bus and some extra I/O ports for additional sensors.
The Relate Dot is a small device with three ultrasound transducers powered by a single AAA battery. The wireless communications board is a Particle Computer. A test board has been designed to enable easy measurement of signals within the circuit.
The Relate Cube is a multi-board device based around a dsPIC. The current system includes a DSP board with an embedded 64-pin dsPIC; an amplifier board with six ultrasound transducers and two stage amplification for each; a communications board which interfaces with a Particle Computer; a transmitter and battery board which powers the device, inluding the capability for recharging via a mini-USB plug and circuitry for driving 6 ultrasonic tranducers. A test board has also been designed to give access to all lines of the connectors. Extra boards can be designed to stack on top of the existing ones.