Piezoelectric Impact Counter with LCD display

• Project ID:

  751042

• Project Type:

  Fixed

• Budget:

  $250-$750 USD
  

Project Description:

Design and build of a micro controller based circuit that counts the number of times an object has been ‘hit’ and displays this number on an LCD display.

Detection of hits will be via a Piezoelectric, something like the ‘Piezo Sensor - LDT Series’ from meas-spec : http://www.meas-spec.com/product/t_product.aspx?id=2484

There must be a 300 milli-second delay between ‘hits’ before a count can be registered. This is to stop the device registering multiple counts for a single hit.

The circuit must operate on a 1.5v button coin cell battery and must consume as little energy as possible.

There must also be a ‘Reset’ switch to reset the counter to Zero.

The entire circuit, excluding the LCD display must be no bigger than 10mmx3mm. The LCD display should be approximately 3mmx1.5mm.

I would like this mounted on a PCB, complete with schematics.

Additional Project Description:

07/28/2010 at 9:13 EDT:
Correction:

Changed from mm to cm:

The entire circuit, excluding the LCD display must be no bigger than 10cmx3cm. The LCD display should be approximately 3cmx1.5cm.

Skills required:

C Programming, Electronics, Microcontroller, PCB Layout, Product Design