Difference between revisions of "Northwestern Design Competition"

Revision as of 22:34, 10 February 2011

Milestone 1

On a button press, read the value of a potentiometer and change the brightness of an LED accordingly using PWM. Note: Do not use an h-bridge or motor as previously assigned.
Due before Workshop 2 on Wed, 2/9.
Sample code from Workshop 1

Milestone 2

Due before Workshop 3 on Wed, 2/23.
Goal:
- Use code from NU32v2: Nokia 5110 LCD and NU32v2: Analog Input to read a potentiometer and print the voltage to the Nokia 5110
- Optically isolate a motor and control its velocity based on the potentiometer reading
- Do 1 of the following:
  - Mount a phototransistor to a laser and detect a cake OR
  - Detect a line of electrical tape on white paper with an optoreflector
Datasheets
- HBridge_L293D.pdf - H-bridge for driving a DC motor
- Optocoupler_A847.pdf - Optocoupler to optically isolate your H-bridge
- HexInverter_74HC04.pdf - Inverting chip to digitize optocoupler output
- Optoreflector_OPB740.pdf - Optoreflector to detect lines or color
- Optoreflector_QRE1113.pdf - Optoreflector to detect lines or color
- Phototransistor_SFH310.pdf - Phototransistor to detect lines, color, or laser reflections
Notes
- DC2011_WS2_OpticalIsolation.pdf - How to optically isolate an h-bridge and servo motor using the A847 and 74HC04

Wiki pages on sensors, actuators, programming, and microcontrollers: use pages below

@@ Line 21: / Line 21: @@
 **[[Media:Optoreflector_QRE1113.pdf|Optoreflector_QRE1113.pdf]] - Optoreflector to detect lines or color
 **[[Media:Phototransistor_SFH310.pdf|Phototransistor_SFH310.pdf]] - Phototransistor to detect lines, color, or laser reflections
+*Notes
+**[[Media:DC2011_WS2_OpticalIsolation.pdf|DC2011_WS2_OpticalIsolation.pdf]] - How to optically isolate an h-bridge and servo motor using the A847 and 74HC04
 ==Previous Years==