ECONOMATICS Smart Box SB-01 |
The Smart Box is a general purpose control interface for use with a
wide range of computers found in education in the early 1990s. These
computers include the BBC Microcomputer, the Acorn Archimedes range,
Apple Macintosh computers, the Research Machines 480Z range and IBM
PC-compatible computers. This particular model was for use with an
IBM PC-compatible computer. The box provides the following facilities;
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OUTSIDE The following pictures show the outside appearance of the SB-01
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Top view
Side and back panel views
The label on the underside showing the box variant ID and the serial number.
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INSIDE Internally the device is very well constructed and is based on the 6502 microprocessor.
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Power is provided from the 240v AC mains through a fused 'kettle plug'. The circular component is a toroidal transformer which provides the low voltage to the system. The case is earthed though the outputs are floating.
The motherboard occupies most of the top part of the case. The power supply components are in the top right corner. The serial input socket is at the top and is a 240° 5-pin DIN socket. To the right of the serial socket is the reset push switch. To the right are the four, black, 180° 5-pin DIN, analogue sensor sockets. The red and yellow sockets inside are for the digital sensors. To the left are the eight, white motor outputs and the sockets for the digital outputs, red and blue. Between the digital output sockets is a double row of power transistors for motor control. This is an issue 3 motherboard. The CPU is a 65C02 and to the left of it is an 8K EPROM of type 2764, which holds the box Operating Sytem (OS). Of this 8K only 4K is actually used by the OS. To the left of the EPROM is a 32K static RAM and immediately below that a 6522 VIA for digital input and output. The analogue ports are read by a 7002 ADC chip. These major ICs are identical to those found in the BBC Master.
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SOFTWARE The control box is managed by a piece of software called SmartMove on the PC. The supplied 3½" disk contains two important files;
This software can be downloaded here. SmartMove for the BBC Master is available here.
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COMMUNICATION WITH THE SMART BOX The Smart Box version SB-01 communicates with the host computer via a serial interface running at 9600 baud. The communication protocols can be found in this document, which appears to be an extract from the Smart Box OS manual. The document contains a number of errors and omissions;
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