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RC remote and car circuit help

Aubrey Champagne

May 8, 2016
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Hello! I am very new to electronics, and don't know a great deal of knowledge on the subject except the basics. I have been constructing the electronics to an rc car that I thought would be fun to build. I have already made the real life model after these schematics and it doesn't work. I have been trying to figure out where i have went wrong, but I can't spot anything. If i could have some debugging help that would be much appreciated. The schematics are below.
 

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Harald Kapp

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Nov 17, 2011
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Possible sources of trouble:
  • Your first image shows analog sticks, but the HT12E is meant to be used with push buttons on these pins.
  • Using the RC oscillator can result in a mismatch of transmitter and receiver frequencies. Do yo have a means to verify these do match?
  • The L293D is incorrectly wired. You need to connectboth driver iputs to use the driver outputs.See the datasheet.
 

Aubrey Champagne

May 8, 2016
10
Joined
May 8, 2016
Messages
10
Possible sources of trouble:
  • Your first image shows analog sticks, but the HT12E is meant to be used with push buttons on these pins.
  • Using the RC oscillator can result in a mismatch of transmitter and receiver frequencies. Do yo have a means to verify these do match?
  • The L293D is incorrectly wired. You need to connectboth driver iputs to use the driver outputs.See the datasheet.
Ok. Is there a correct pin I should use for the analog sticks, and the analog sticks only have one output so how should I hook that up to the L293D?
 

Harald Kapp

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I don't think the chip you use is suitable for analog sticks at all.
 
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