The MediaCup hardware environment consists of the MediaCup, an IrDA compatible infrared network and and a wireless recharging unit to supply MediaCups with energy

MediaCup-electronic -- > Responsible: Holger Krull, Michael Beigl complete electronics integrated into the rubber bottom of the cup collects sensor data: acceleration, movement, temperature evaluates sensor data, knows about its state. E.g. the MediaCup knows if someone drinks, if someone plays with the cup or if the cup stands on the desk behaves according to knowledge about its state, e.g. powers down; communicates state to backbone network used in the TecO lab as everyday cups, no special knowledge or behaviour needed unobtrusive wireless recharing communication through infrared (IrDA encoding) either with backbone infrared network or with Laptop or PC with IrDA interface unpersonalized because cup electronics change at every cup "washing interval" but: every cup contains a unique IPv4 adress -- > Technical details Microprocessor: Arizona Microchip PIC16F84 at 4 MHz (V1.2) or 1 MHz (V1.3) Communication: IR-LED: Siemens SFH409-s (V1.2), H-P HSDL 4420 (V1.3) Temperature Chip: Dallas Semiconductor DS1621 Acceleration: ADXL202AQC (V1.2), 1 button & 3 ball switches (V1.3) Power: Lithium (V1.2) lifetime: 2-3 weeks; 2F Panasonic GoldCap 5.5V (V1.3) lifetime: min. 6 hours, average 10 hours Recharging: Wireless (V1.3) via induction; recharging time max. 15 min Power consumption: normal:<2mA, sleep: 1µA Measurement, Communication intervals: Depend on the software release -- > Schematics, Software, Notes for users How to build your own: schematics, layout, software and "howto" for V B0.1 and V H 1.3 version picture
Wireless Recharger -- > Responsible: Holger Krull, Michael Beigl allows to wireless recharge MediaCups uses induction (ultrasonic frequency) operates at 18 V almost as small as a saucer replaces "normal" cup saucers, providing an unobrusive way to reload cups -- > Schematics, Software, Notes for users
Infrared Network and CAN node (IrC R(2)) -- > Responsible: Albert Krohn, Michael Beigl builds the wireless communication backbone for MediaCups receives IrDA encoded IR signals and transmits them allows IrDA capable devices (PDAs, Laptops, etc.) to communicate e.g. to surf the Web network nodes are interconnected through a CAN bus very low cost, easy to set up, self healing backbone communication wired through twisted pair cable (TP4) containing data & power lines CAN network is connected to the backbone network (e.g. ethernet/Internet) through a PC (either through a CAN card or via serial communication) every CAN node knows about his location allows a 1.5x1.5m^2 IR footprint and a max. range of 2 m IR operates at 19200 bit/s CAN throughput depend on network size -- > Technical details Microprocessor: Arizona Microchip PIC16F877 at 20 MHz IR Communication: IrDA: 4 x H-P HSDL 1001 IrDA encoding: H-P HSDL 7001 CAN-Communcation: Phillips SAJ1000