This is a very cool looking device. --Ivan
-----Original Message----- From: owner-wearab...@cc.gatech.edu [mailto:owner-wearab...@cc.gatech.edu] On Behalf Of Daniel L. Ashbrook Sent: Friday, August 13, 2004 7:14 AM To: wearab...@cc.gatech.edu Subject: [wearables] wireless accelerometer interest Hi everyone, I'm trying to gague interest in the wireless accelerometers our group has developed. We're investigating a production run of around 100, to be sold for under $100 each. Here's a variety of information about them, and the website where more information can be found. If you're interested, please send me an email with how many you think you'd order when they're available. If you have a specific project in mind, a short description would be appreciated as well. Thanks, Daniel Ashbrook anj...@cc.gatech.edu http://www.cc.gatech.edu/ccg/resources/btacc/ Overview This is a small wireless sensor platform providing a bluetooth SPP link to three axes of accelerometer data. The accelerometers are sampled by a PIC microcontroller (onboard ADC) at roughly 100Hz (rate can be changed via firmware). Data from the ADC conversion is sent to a remote computer using the PIC's UART in conjunction with a drop-in bluetooth serial part. Even with two dual-axis accelerometers onboard there are up to 17 free I/O lines and two additional ADC channels depending on the device configuration. Three sockets provide access to all PIC signals. Over-the-air programming allows for easy firmware updates and rapid prototyping without the need to have a PIC programmer or special cable. Schematics, parts lists, and firmware sources are available online. Quick Feature List * Bluetooth serial port profile (SPP) for standardized interface * 3-Axis accelerometer data, 3.9mg resolution (ADXL202JE) * Reprogrammable PIC (16LF873-04I) * 17 free I/O lines * In-Circuit programming connector * Over-the-air programming via bootloader * Battery life ~60hrs on 840mAh 3.7v battery, full TX mode * 13mA @ 3.7v TX mode, 3mA @ 3.7v standby * Very Simple Firmware * 35mm X 35mm X 5mm
