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First goal:
Control RCs via computer.´

Which is this circuit using simple RCs,
with tabs in remote control.

http://zaxter.us/kb/RC1_Graphic_Control.png



Second goal:
Record, store and playback moves.´

BASH script program to control RC.

Source code http://zaxter.us/kb/move_RC1 for above.
http://zaxter.us/kb/move_RC1_truth_table.png


C program with X forward.
http://zaxter.us/kb/RC1viaC.png
 
http://zaxter.us/kb/RC2viaC.png
http://www.youtube.com/watch?v=lBVOQOJtY-E&feature=youtu.be


Third goal:

Monitor RC lap and pit stop times.
PCB for cars.

http://zaxter.us/kb/car_PCB_Top1.png
^ PCBs & components are not to scale.>
Schematichttp://zaxter.us/kb/car_circuit2.sch
PCB http://zaxter.us/kb/Car_PCB_Layout2.dip
Gerber's http://zaxter.us/kb/car_pcb_gbr.tar.gz

Prototype testing.
Mockup http://zaxter.us/kb/RC_PCB.jpeg work.
Car Battery pack.
Mustang remote.


Hope they try again, these PCBs are from school.
http://zaxter.us/kb/car_PCB_Poor_Job01.jpg
http://zaxter.us/kb/car_PCB_Poor_Job.jpg
http://zaxter.me/kb/wrong_PCB.jpg
http://zaxter.me/kb/another_poor_job01.jpg
http://zaxter.me/kb/another_poor_job.jpg

Too many problems to overcome while
trying to work with a PCB from school.
http://zaxter.us/kb/C7_with_prototype.jpeg

This is the way a PCB should look.
http://zaxter.us/kb/PCB_front.jpeg
http://zaxter.us/kb/PCB_back.jpeg
Not bad for $15 each. ;-)

http://zaxter.us/kb/new_PCB_corvette.jpeg
http://zaxter.us/kb/new_PCB_mustang.jpeg



PCB for computer.

IR LEDs on car's PCB sends signals to the photo diodes on the computers PCB.
Picture below shows how a 300 pin limit was pretty easy to hit.
http://zaxter.us/kb/main_PCB_Top1.png
Now with 1000 pin version, work in progress.png progress5V.png progress12V.png progressGND.png progressBack.png


LDR and R6 math with four AA batteries, calculate Low/High voltages for resistance swing.
move_RC LDR provides input for pit stop LEDs to blink.

http://zaxter.us/kb/voltage_divider.png

Measured effect with voltage change on 74C14 response rate.
http://zaxter.us/kb/voltage_vs_freq.png









http://zaxter.me/siop/proto_typed_icon.png
Why buy SI/OP?