Products

Door/Gate Controller

Card Reader Isolator

CPU_1A1

V to R Convertor

Bathroom Door Controller

Lighting/Heating Timer

Other 68HC11 boards

Building Automation

Fluorescent Inverters

Automatic Gate & Door Controller

This is a 68HC11 based module that connects to the drive motor, limit switches, safety beams etc. It is ideally suited to controlling gates and doors that are connected to access control systems.

I have used this unit to control gates (both AC and battery backed DC), and garage doors ranging in size from small 1 car sectional doors to large industrial roller doors.

More Info

Card Reader Isolator

This unit is designed to be connected in series with the cable to a Wiegand or Magnetic card reader. It provides electrical isolation and signal conditioning. It will permit extra long cable runs and improve reliability in hostile environments.

It has been used mostly to isolate the control equipment from trailing cables and card readers in lift cars.

68HC11 Based Control Boards

I have designed a number of 68HC11 based control boards. These include versions with buffered analog and digital inputs, digital, relay and triac outputs, Dallas 1-wire port.

A Few Pictures

Gear tray with Floppy drive at the back, HC11 control board then I/O board at the front. ISA connection between the two boards.
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last updated: 06 Feb 2012