(actual size = 3.3" x 2.8")

The figure at the right shows a BOTCOP-SVO - Multi-Servo Dual-Processor Controller board. The top socket mounts a Basic Stamp 2 or similar 24-pin module. The bottom socket mounts an OricomTech MSCC20 servo controller chip (as well as most 2nd-generation PIC microcontroller chips).

The MSCC20 servo chip can control up to 18 R/C servos, given the header interfaces available on the board. I/O lines can be used for servos, as well as general analog and digital I/O. Up to 5 A/D channels are available. (2 lines go to the eeprom socket, which is not used by the MSCC20 chip).

The 24-pin module has all 16 I/O lines connected to headers, of which 2 lines are used in a 0-5v "local buss" for RS-232 comms, when the servo chip is installed. In addition, 2 I/O lines are connected to the push-button switches and LEDs at upper left. The module can also drive up to 8 R/C servos on a part-time basis, via the top header.

The 0.100" TIL headers lower-left corner and top-center directly interface R/C servos with Futaba pinout (signal-power-gnd).

RS-232 Remote Comms. Either 24-pin module or servo chip can be connected to the DB09-F connector for comms with a remote host, using standard RS-232 voltage levels. The servo chip has its own on-board level translators.

A 1-Amp 5-v regulator supplies plenty of power for driving external loads, via connections on the headers. The buzzer can be driven by either processor. The Stamp has some very nice tune-generation functions.

Physical. 3.3" x 2.8" (85 x 71 mm) - small-sized, industrial-quality double-sided FR4 pcb with heavy buss traces, plated-through holes, solder masks and silk-screens.

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