The Flash MC Experimenting Board II is an ideal platform for all developments in conjunction with the 'big' Atmel Flash microcontrollers (AT89C51/AT89C52/AT89C55/AT89S8252). It is not only recommendable for starters but also very much recommendable for the advanced developer due to the fact that it offers an universal and standardized platform which enables to bring almost anything thinkable into reality.

All basic parts of a Flash microcontroller applikation are located directly on the Flash MC Experimenting Board II. To these belong the voltage regulation and stabilisation, the oscillator, the POR-wiring (Power On -> Reset), a reset switch, a 8x DIP switch for all kinds of configuration issues, pin rows for solder connections and lots more.

Through four so-called extension ports you can attach all kinds of extension modules. All four extension ports offer in addition to the I/O lines of the port, power supply, the serial interface as well as other lines.

These extension modules including microcontroller example programs will be published for your convenience little by little here at Batronix.com. In most cases a simple hole grid erection will be sufficient, so expansions can be easily developed on one's own.

Here are only some examples of possible expansion modules:

Input area:
- Keys Board
- Keyboard block
- PC-Keyboard connection

Indication area:
- LC-display
- LED display modules
- 7 segment fields

Output area:
- Relay board
- Stepper motor control
- PC-Printer control

Sensor technology area:
- Temperature sensors
- Infrared sensors
- AD converter

Other areas:
- RAM expansion
- DA converter
- PC connection serial and parallel

On the first view the plan might apear a little complicated,but it really isn't. The upper left part represents the voltage regulation and stabilisation. The switches S1-1 to S1-8 are implanted with a simple 8x DIP switch. On the upper right you can see the pins rows that are located left and right of the MC and which simply offer his pins 1:1 for a solder connection. The drawn joints EP 0-0 to EP 3-15 are the extension ports. I recommend to take a close look at the circuit layers, then everything should be easily understandable.