Solar Rc Conversion

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Introduction: Solar Rc Conversion

This instructable will teach you how to use the sun to your advantage. Those silly little remote controlled cars always drain the life from my perfectly good batteries and i wanted them to stop, it's really not nice you know! To solve the problem i bought some rechargeable ones but then i had to take them out and wait for them to charge while my car sat sadly un-driven and alone. so i mounted a recharger right on top of it!

Step 1: Materials

first you will need:

a hummer from radio shack ($7.99),
a solar walkway light, a screwdriver,
some pliers and electrical tape, a
soldering gun, a hobby knife, and 2 AA
rechargeable batteries.

Step 2: Open It!

now open the rc car and take out the display stand screws.
take off the body.

Step 3: Prepare It!

cut off the axle (it sounds bad but its not it helps when you solder it)

Step 4: Dissassimble It!

take apart the solar light (the solar panel is already gone)

Step 5: Cut It!

cut out the sun roof and run the solar panel wires through it

Step 6: Solder It!

solder the solar panel's wires to the battery leads

Step 7: Sew It Up!

tape anything that needs tape and put the screws into the body and the rechargeable batteries in . The batteries will charge if left in the sun. Although it doesn't run directly off of solar power it does store the suns energy and put it to use as well as cut down on the amount of batteries in garbage cans.This is just a small scale but in the future i have hopes that this same basic principle will be used on full sized cars. The solar panel wouldn't be from a light and the batteries wouldn't be AA's but it would be nice to park your car outside in the morning at empty and when you go to see a movie at night its all charged up.Thanks for looking this is my first instructable!

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    56 Discussions

    A solar conversion is a fun and educational way to bring new zing to an old toy RC car. Although hobby-size solar panels produce low currents more suited to charging batteries than turning motors, they can still supply enough juice to run a small car with low power requirements.

    ok wait a sec..... where is ur blocking diode? if you dont have one of them... it sounds silly but the battery will just give the solar panel back the energy when the solar panel isnt supplying current.... also how many volts does the hummer require to run.... if it uses 4 normal AA batteries thats 6 volts if you use rechargables it gives it only 4.8V... it just seems a bit tacky just to whack the solder leads from a rubbish solar panel into battery leads.... u might have to use the power from the batteries and the solar panel to get the thing to run... i dont know... did u already get it working.... please tell me how it worked because you cannot hope to charge 4.8 volts with a solar panel that only gives 2.... i dont know it could be more.. u might need to wire two solar panels in series to achieve the right amount of volts and use a 5 volt regulator with a heat sink

    13 replies

    yes it worked and i forgot to ad the step when i added a switch to the solar panel so it wouldn't blow itself up.

    nah a regulator... coz a transformer steps down the voltage and current depending on rating and how many winds it has... it's drop is proportional to the number of winds in the coil. A regulator is simply that... it regulates the voltage ... not sure about current so you can go above the voltage and not damage the circuit, but it doesnt generate the difference if your under there like $4 aussie

    I think you can get DC transformers.... im not sure... but I didnt suggest it was DC haha, but it can transform AC into DC like in your phone or ipod charger

    if you want 6volts you need 5aa batteries (1.2x5=6)
    4 batteries is 4.8v
    it should not burn out if you use 7.2v but your car will be faster!(6 batteries)

    I know that, i was merely commenting on the fact he thinks that a rechargeable battery has 1.5 volts... i could have suggested he needs 5 for 6volts, but without enough voltage from the solar panel, the batteries are not going to charge. the other thing is if you increase the volts it will not burn out striaght away but it will eventually scrap the motor. Its like using 12volts on a 6 volt motor... sure it will run super fast for a while until it just dies.

    hey man thats cool... at least ur not instructing people about stuff they could kill themselves with. but yea this looks like a really good project.. its about being environmentally friendly which is good.. youll soon learn more about electrical stuff.

    Do you have any better pictures of the leads... my car looks nothing like that on the circit board.... i cant figure out how to connect the pannel to the leads

    1 reply

     Just where the metal from the battery compartment comes through the plastic frame. Be careful to get the positive on the positive and so on.

    nice dude i like it i did this project in 06 i won gold but not trophy


    overall nice hummer :)

    2 replies

     good enough for me! How do you start a group? ill try to figure it out until you get back to me

    hey yea did you see my instructables they are good i got 30 views in 4 hours.


    ill try to find a way to make a group ok.