1. Arduino DC motor driver L298 H-Bridge Arduino GUI vs Atmel Studio
Stefan Pirvu
ADCES 2015

2. Content Arduino board review
Serial communication, writing C# app in order to communicate over serial - code
Using H-Bridge to power DC motors
PWM vs. continuous voltage drive
Arduino GUI - code
Atmel Studio - code

3. Arduino board review USB support 16MHz 32k memory 14 I/O pins
5 PWM pins
6 ADC pins

4. Using H-Bridge to power DC motors

5. L298 http://www.tech.dmu.ac.uk/~mgongora/Resources/L298N.pdf
Cheap aprox RON
Dual H-Bridge

6. PWM vs. continuous voltage drive
Analog
bad at low voltages
needs mechanical switches
ranges depend on the number of resistors
very resistant over time
Digital
good at low voltages
fine control
buzz sounds

7. Arduino GUI http://arduino.cc/
Serial communication, writing C# app in order to communicate over serial
CODE 

8. Atmel Studio http://www.atmel.com/microsite/atmel_studio6/
But before coding…

9. ATMEGA328P AIN0/OC0A/PCINT22 – Port D, Bit 6
OC0A, Output Compare Match output: The PD6 pin can serve as an external output for the Timer/Counter0. Compare Match A. The PD6 pin has to be configured as an output (DDD6 set (one)) to serve this function. The OC0A pin is also the output pin for the PWM mode timer function.
T1/OC0B/PCINT21 – Port D, Bit 5
OC0B, Output Compare Match output: The PD5 pin can serve as an external output for the Timer/Counter0. Compare Match B. The PD5 pin has to be configured as an output (DDD5 set (one)) to serve this function. The OC0B pin is also the output pin for the PWM mode timer function.

10. ATMEGA328 Timer/Counter LET’S CODE 
Timer Registers Several registers are used to control each timer. The Timer/Counter Control Registers TCCRnA and TCCRnB hold the main control bits for the timer. (Note that TCCRnA and TCCRnB do not correspond to the outputs A and B.) These registers hold several groups of bits:
Waveform Generation Mode bits (WGM): these control the overall mode of the timer.
(These bits are split between TCCRnA and TCCRnB.)
Clock Select bits (CS): these control the clock prescaler
Compare Match Output A Mode bits (COMnA): these enable/disable/invert output A
Compare Match Output B Mode bits (COMnB): these enable/disable/invert output B
LET’S CODE 

11. Use AVRDude to upload HEX
>C:\Program Files\Arduino\hardware\tools\avr\bin
avrdude.exe -C”C:Program Files\Arduino\hardware\tools\avr\etc\avrdude.conf” ­f -patmega328p -carduino -P\.COM4 -b D -Uflash:w:”$(ProjectDir)Debug$(TargetName).hex”:i

12. Thank you
QUESTIONS??