I have had thought to hack the RC part to allow two arduinos (or more) to communicate via hacking the transmitter and then connecting the (disconnected) signals lines as an arduino input.
#Rc mini racers hacked mod#
NOTE: This mod cancels the RC functionality.
This can only be turned on and off - if you want to use PWM on there - you will have to turn to a custom H-Bridge design and ditch the board.
* Relay based H-Bridge for the bigger devices. * Analog (transistor based) H-Bridge - can be used with analogWrite and PWM to control the power * Daughter bvoard based controller/receiver * RX2C microchip based controller/receiver Once reassembled, you can control the car from the arduino - and viola! you have a robotic car!Īfter doing a few cars - i find that the process of conversion of a car takes about 30-40 minutes.s a Here is a video of this mod after we completed the mod in 25 minutes. If you open you car and do not find the standard configuration - do not despair - figuring out the H-Bridge inputs are easy - and usually are the pins connected to 2.2k resistor.ġ) remove the RC chip - more on this later.Ģ) solder 4 wires to the H-Bridge Terminalsģ) solder a wire to the negative terminal of battery - to power the arduinoĤ) solder a wire to the positive side of the switch - to power the arduino. The chip specifies an additional output - "turbo mode" however I am yet to see a car with this function implemented. There is another configuration in which the right two wheels are connected to one motor and the left two wheels connected to another and this configuration can do some interesting stunts such as turning on the spot and other tricks. Contrary to the article they are safe to turn on both sides of the H-Bridge at the same time by mistake - all they do is turn on braking mode.Īlmost all RC cars are configures so the rear wheels are running of a power H-Bridge for the forward/reverse motion and one H-Bridge is used to run a servo or servo-like mechanism in the front wheel. Furthermore- the boards are optimized to drive the motors of the cars optimally. The boards that do not use the chip will usually have an equivalent daughter board that fills the same function.
#Rc mini racers hacked drivers#
pins 6,7,10,11 are the drivers for H-Bridge) and these boards can accept logic voltage levels regardless of the battery voltages.
Almost all the cars these days use a variation on the RX2C toy car chip (link) (i.e. I opened up 4 RC cars that were donated to the project and indeed they all use more or less the same configuration: All these cars have 2 H-Bridges on a small board mounted inside. It suddenly occurred to me that almost any toy RC car might be using this or almost similar architecture. We studied H-Bridges made using trasistors and switches, but there was something missing.
#Rc mini racers hacked how to#
I was looking for a cost effective way to teach them about the priciples of robotics without spending an arm and a leg, and getting them excited about the prospects of hacking hardware and teach them how to interface to the arduino platform. This feature is a superset of the feature.I am teaching a robotics course in my kids high school (Rambam Mesivta in Lawrence, NY). The app uses the device's advanced multitouch capabilities for tracking two or more points independently. The app uses the device's basic two-point multitouch capabilities, such as for pinch gestures, but the app does not need to track touches independently. The app uses the Global System for Mobile Communications (GSM) telephony radio system. No longer enforced.Īllows applications to access information about networks.Īllows an application to write to external storage.Īllows an application to read from external storage.Īllows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device. This constant was deprecated in API level 21. Allows access to the list of accounts in the Accounts Service.
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