Web Site: www.parallax.com Office: (916) 624-8333 Forums: forums.parallax.com Fax: (916) 624-8003 Sales: sales parallax.com Sales: (888) 512-1024 Technical: support parallax.com Tech Support: (888) 997-8267 MoBoStamp-pe BS2pe Motherboard ( 28300) General Description The MoBoStamp-pe provides a compact, professional-grade platform for BASIC Stamp applications. With the MoBoStamp-pe and the assortment of available daughterboards, you will be able to integrate and package one-off or multiple application systems with ease. The onboard AVR coprocessors permit the offloading of compute-intensive and background tasks from the BASIC Stamp, yielding a high performance level, while retaining the BASIC Stamps ease of programming. They come preprogrammed for digital I/O, analog input, pulse-width-modulated output, and frequency counting. Each coprocessor interfaces to both the BASIC Stamp and one daughterboard each and may be reprogrammed by the user. Potential uses include background serial I/O, floating point processing, and background servo pulsing. Before using your MoBoStamp-pe, please read and understand this entire document. Features Compact size: designed to fit available packaging. BS2pe BASIC Stamp chip for high performance with low current consumption. 32K x 8 EEPROM for program and data storage. Built-in USB interface, capable of powering the entire board. Two sockets for plug-compatible daughterboards, enabling the easy integration of sensors and interface options. Two user-programmable Atmel AVR coprocessors, preprogrammed for digital I/O, PWM output, analog input, and frequency measurement. Multi-mode power sourcing: board can run from USB or external power. Multiple Vdd levels: 3.3V and 5V, jumper selectable. User-programmable multi-color LED for status indication. Programming header for future interface to an SX-KEY. This will allow programming the SX chip directly. Application Ideas Robotics Remote Sensing Data Acquisition Industrial Control Desktop Appliances Whats Included 1 ea. MoBoStamp-pe Motherboard, preconfigured with: 4 ea. 3/16 dia. x 5/16 Threaded Standoffs 8 ea. 4-40 x 3/16 Panhead Machine Screws 3 ea. 2mm Jumpers Parallax, Inc. MoBoStamp-pe (2006.09.13) Page 1 of 9 Interface Connections and Jumpers Power Source Vdd Select Daughtercard Coprocessor SX Programming Jumper Jumper Socket Header External Reset Power Button VddO LED Bicolor LED USB Connector RxD to AVR A1 Daughtercard Coprocessor Jumper Socket External Power Connector The external power connector enables the connection of a filtered, unregulated 6-9VDC power supply to power the motherboard. The plug and cable for this connector may be obtained separately from DigiKey, using the part numbers given under Specifications near the end of this document. Power applied here supplies both the onboard 5V regulator and the Vin connection to Daughterboard Socket A. Vdd On LED This LED comes on when the boards Vdd is active. When the board is powered externally, this will occur whenever external power is applied. When the board is powered from the USB port, the LED will come on once the board has been connected to a USB port and the onboard USB chip enumerated by the PC. For applications (such as light-sensing) where such a light source is undesirable, or for situations requiring minimum current draw, there is a bow-tie trace on the bottom of the board (under the external power connector) which can be cut to disable the LED. USB Connector The USB connector is the mini-B type. Compatible A-to-mini-B cables may be obtained at most local computer stores or from Parallax as part number 805-0006. Power Source Jumper The power source jumper can be placed to select either external or USB power. When external power is selected (upper position, marked EXT), the onboard regulator provides 5V to the rest of the board from Vin. Vin can come from either the external power connector or a daughterboard plugged into Daughterboard Socket A. The USB chip, however, will continue to be powered by the host PC through the USB cable. Parallax, Inc. MoBoStamp-pe (2006.09.13) Page 2 of 9