The Contender was completed within the allotted budget ($50)
A lot of the components are free because they're readily available in lab. (resistors, capacitors, wires, etc)
The ADXL202JE accelerometer are free samples from analog devices (analog.com)
The training belts are from Raymond Lau.
The working accelerometer circuit (attached on the belt) is detached from the stationary helicopter project by Tom Ling and Norbert Huber from Spring 2004.
|Atmel ATmega32 Microcontroller||1||$8.00|
|ADXL 202JE (samples from Analog Devices)||2||$0.00|
|LMC 7111 Op-Amp||4||$0.00|
|1 uF capacitor||2||$0.00|
|0.1 uF capacitor||4||$0.00|
|100 kOhm resistor||1||$0.00|
|1 MOhm resistor||4||$0.00|
|500 kOhm resistor||8||$0.00|
|330 Ohm resistor||1||$0.00|
|75 Ohm resistor||1||$0.00|
|100 Ohm resistor||1||$0.00|
|10 kOhm Potentiometer||4||$0.00|
|16 MHz crystal||1||$0.00|
|Connectors, wires, cables||n/a||$0.00|
|Working Accelerometer circuit (from Tom Ling's Stationary Helicopter Project)||1||$0.00|
|Boxing Gloves||1 pair||$9.99|
|Harbinger Training Belt||1||$0.00|
|Television from Radio Shack||1||$0.00|
We could have done some extra things to avoid the costs in this project. The STK 500 can be easily replaced with a board we could solder by ourselves. We could also rearrange the amplifiers to make room for the extra TV output to avoid the extra breadboard.