Mike Ellis - Electronic Projects Tutorials
Complete schematics and code for a 68HC11 based frequency counter, square wave synthesizer, sine wave synthesizer, programmable filter, capacitance and inductance meter, with a digitalker speech synthesizer output.
This site contains lots of embedded control and robotics projects that I've developed over the years. Many were featured in past articles in Nuts & Volts magazine, and in my book, Build Your Own Robot! Others were projects that I've shown at various meetings of the Seattle Robotics Society (SRS). And I offer here many powerful tools that I've created for working with the Motorola 68hc11 and 68hc12 microcontrollers. - Karl Lunt
Rogers Embedded Microcontrollers
This page is intended to be a source of information for those interested in Motorola MC68HC05, MC68HC08, MC68HC11 and MC68HC12 Microcontrollers.
Six Digit LED Clock Display
The board is driven by a Maxim MAX7219 which has a serial interface; it can be controlled by a any microcomputer with a SPI or three output lines. The board is 2.75 inches by 6.5 inches in size; mounting four .8 inch LED displays and two .56 inch displays as well as six individual LEDs, a 7805, the MAX7219, and a five pin header.
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