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EE 330 Final Project Lazer Fast Go-Go Ryder

Alex Kitterman Richard Sutton. EE 330 Final Project Lazer Fast Go-Go Ryder. Project Statement. Design circuit to control RC-Car 5 separate receivers Forward, Reverse, Left, Center and Right Left and Right need to latch Receivers triggered by a laser Up to 3 stories away.

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EE 330 Final Project Lazer Fast Go-Go Ryder

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  1. Alex Kitterman Richard Sutton EE 330 Final ProjectLazerFast Go-Go Ryder

  2. Project Statement • Design circuit to control RC-Car • 5 separate receivers • Forward, Reverse, Left, Center and Right • Left and Right need to latch • Receivers triggered by a laser • Up to 3 stories away

  3. Step 1: Motor Control • H-Bridge Circuit • NPN and PNP transistors • Allows for “flipping” of poles needed to get forward and reverse

  4. Motor Control Testing of H-Bridge • With proper Voltages applied • (equivalent of 3AA batteries) • Could not read the 3V needed to get to motor • Adjusted Resistance values, different combinations of NPN and PNP transistors • Still no luck • After research found a Specialized IC • Able to run on supplied voltage

  5. Forward and Reverse • Controlling the H-Bridge • 2 light controlled voltage dividers • Fed into inverters • Used voltage buffers to ensure H-Bridge chip receives digital high or low • Included a potentiometer • Able to adjust sensitivity of voltage divider dependent on given ambient light

  6. Steering Control • Originally tried with SR latches • Ran into Problem with not being able to apply a third position • SR latch only have a “Set” and “Reset” • Ended up using a manipulation of the circuit from Lab 9 • The laser controlled light

  7. Steering Control Cont. • Video shows what discussed in previous slide • Both lights off show centered car • Lights corresponding to Left and Right directions • To implement this in circuit • We had a left over Opto-Coupler from another project • Used to interpret on and off of SCR

  8. Schematic • Wanted to further and implement our design • Created schematic • Created layout through Dip-Trace (One member familiar with program already)

  9. Layout • Once Schematic created • Can create the corresponding layout pattern • Can move the different parts to a desired location • Allowing PCB to fit within the RC-Car

  10. Auto Route of Layout • This step places all copper traces to hook up different components Top Copper and Silk Screens Bottom Copper and Silk Screens

  11. All together • Sent needed files to Advanced Circuits for fabrication • Received fabricated PCB Friday, May 3rd • Assembled/soldered and implemented into car Completed PCB

  12. Testing • Initial testing • Forward/Reverse • Functioned properly • Steering • Worked but needed adjustments • While adjusting we fried our chip • Tried to debug, no luck • Went with our plan B • Build on original breadboard

  13. Conclusion • Plan B • Final design • Nice being able to apply knowledge in an enjoyable, fulfilling project Completed Circuit

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