ee 330 final project lazer fast go-go ryder
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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EE 330 FINAL PROJECT
LAZER FAST GO-GO RYDER
Alex KittermanRichard Sutton
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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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Step 1: Motor Control H-Bridge Circuit
NPN and PNP transistors○ Allows for “flipping”
of poles needed to get forward and reverse
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Motor Control Testing of H-Bridge With proper Voltages applied
(equivalent of 3AA batteries)Could not read the 3V needed
to get to motorAdjusted Resistance values,
different combinations of NPN and PNP transistors○ Still no luck
After research found a Specialized IC○ Able to run on supplied voltage
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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
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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
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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
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Schematic Wanted to further
and implement our designCreated schematic
○ Created layout through Dip-Trace (One member familiar with program already)
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Layout Once Schematic
createdCan create the
corresponding layout pattern
Can move the different parts to a desired location○ Allowing PCB to
fit within the RC-Car
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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
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All together Sent needed
files to Advanced Circuits for fabrication
Received fabricated PCB Friday, May 3rd
Assembled/soldered and implemented into car
Completed PCB
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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 BBuild on original breadboard
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Conclusion Plan B Final design Nice being able
to apply knowledge in an enjoyable, fulfilling project
Completed Circuit