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CSC-2700 – (3) Introduction to Robotics

CSC-2700 – (3) Introduction to Robotics. Robotics Research Laboratory Louisiana State University. What we learned in last class. Microcontroller AVR-C. Atmel- ATMega128 – 8bit - PIN : 64 - Speed: 16 Mhz - Memory: 128KB-ISP, 4KB-EEPROM - Power Consumption : 0.2 W . Variable Type

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CSC-2700 – (3) Introduction to Robotics

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  1. CSC-2700 – (3) Introduction to Robotics Robotics Research Laboratory Louisiana State University

  2. What we learned in last class • Microcontroller • AVR-C Atmel- ATMega128 – 8bit - PIN : 64 - Speed: 16 Mhz - Memory: 128KB-ISP, 4KB-EEPROM - Power Consumption : 0.2 W Variable Type - uint8_t, uint16_t, uint32_t, Char, int, double, float, array[], pointer* Condition / Loop - if (){}else{}, switch case - for (;;), while(){}, do()while{}

  3. Topics for today • Digital Port • PORT A, C, G • PORT B, D, E, F • Digital Output • LED • LED-Matrix • Buzzer

  4. Digital Ports • PORT A – digital in/out • PORT B – PWM/ISP (In System Programming) • PORT C – digital in/out • PORT D – Interrupt / UART1 • PORT E – Interrupt/ PWM / UART0 • PORT F – Analog to Digital • PORT G – digital in / out All ports can be configured for Digital in/out port

  5. Digital out • LED control • Turn ON : LED_ON ( COLOR ) • Turn OFF : LED_OFF( COLOR ) • Toggle : TOGGLE (COLOR_LED) • Brightness – • more than 25 blinking per second, it looks keep on • Each blinking period adjust LED on/off time duration • What does the abbreviation LED mean?

  6. Diode • The most common function of a diode is to allow an electric current to pass in one direction, while blocking current in the opposite direction • Protect circuits from high voltage surges - Avalanche diodes • Regulate voltage - Zener diodes • Electronically tune radio and TV receivers - Varicap diodes • Generate radio frequency oscillations - Tunnel diodes, Gunn diodes, IMPATT diodes • Convert light into either current or voltage - Photodiode • Produce light - Light Emitting Diodes (LED)

  7. LED (Light Emitting Diode)

  8. Digital out – 8*8 LED dot Matrix

  9. Digit out – 5 * 7 LED dot Matrix

  10. Let make 3 * 3 LED matrix program COL1 COL2 COL3 COL1 COL2 COL3 ROW1 ROW1 ROW2 ROW2 ROW3 ROW3

  11. Make some patterns on LED matrix COL1 COL2 COL1 COL2 COL3 COL3 ON OFF OFF ON OFF OFF 2 ROW1 OFF 1 ROW1 ON 3 2 1 3 ROW2 ROW2 5 4 ON OFF 6 5 4 6 8 7 9 8 7 9 ROW3 ON ROW3 ON COL1 COL2 COL3 OFF OFF ON ROW1 ON 2 1 3 ROW2 5 ON 4 6 8 7 9 ROW3 OFF

  12. How about this animation 1 3 2 1 3 2 1 3 2 4 6 5 4 6 5 4 6 5 COL1 COL2 COL3 8 7 9 8 7 9 8 7 9 ROW1 1 3 2 1 3 2 ROW2 4 6 5 4 6 5 ROW3 8 7 9 8 7 9 1 3 2 1 3 1 3 2 2 1 3 2 4 6 5 4 6 4 6 5 5 4 6 5 8 7 9 8 8 7 7 9 9 8 7 9

  13. How to make this pattern ON OFF OFF OFF 2 Repeat this 25 times per second at least 1 3 ON 6 5 4 COL1 COL2 COL3 8 7 ON 9 ON OFF OFF ROW1 2 1 3 OFF 2 3 1 ROW2 5 4 6 ON 5 4 6 8 7 ROW3 9 8 7 ON 9 ON OFF OFF OFF 1 2 3 ON 5 4 6 8 9 7 ON

  14. Let’s try to make some patterns COL1 COL2 COL3 COL1 COL2 COL3 ROW1 2 1 3 2 3 1 ROW1 ROW2 5 4 5 4 6 ROW2 6 8 7 9 ROW3 ROW3 8 7 9

  15. Can we make this animation COL1 COL2 COL3 1 3 ROW1 2 1 3 2 4 6 ROW2 5 4 6 5 8 7 9 ROW3 8 7 9

  16. Different size of LED matrix • 3 * 3 LED matrix • 5 * 7 LED matrix • 8 * 8 LED matrix • 1280 * 720 LED matrix • if three colors(Red, Green, Blue) are in one LED dot SD – LED TV 1920 * 1020 (RGB)LED matrix HD – LED TV

  17. Digital out • Buzzer – sound • Tic- tac noise • Siren • Sound pitch control • Song

  18. Homework -3 • Make the animation in slide-15 • (Bonus Point)Display “-GO_TIGER” on LED-Matrix • (Bonus Point) Make characters move from right to left G - O I E G T S R _ • G O _ T I G E R S

  19. Open Mind Quiz (3) • There are two gates, one is for heaven and the other is for hell. • There are one angel and one devil, and we don’t know who angel is • The angel say always true but devil say always false • You have only one chance to ask one of them • How to figure out which gate is for heaven? 1 2 A B

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