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
EE 330 FINAL PROJECT
LAZER FAST GO-GO RYDER
Alex KittermanRichard Sutton
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
Step 1: Motor Control H-Bridge Circuit
NPN and PNP transistors○ Allows for “flipping”
of poles needed to get forward and reverse
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
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
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
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
Schematic Wanted to further
and implement our designCreated schematic
○ Created layout through Dip-Trace (One member familiar with program already)
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
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
All together Sent needed
files to Advanced Circuits for fabrication
Received fabricated PCB Friday, May 3rd
Assembled/soldered and implemented into car
Completed PCB
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
Conclusion Plan B Final design Nice being able
to apply knowledge in an enjoyable, fulfilling project
Completed Circuit