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Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Assuming that the wires you mention originally connected to the forward and reverse switches on the remote control, the safe way to have the Pi control two relays, with the relay contacts connected where the switch contacts were connected or in parallel with the switch contacts.

Email transitsor friends Cb transistor on Facebook — opens in a new window or tab Share on Twitter — opens in a new cb transistor or tab Share on Pinterest — opens in a new window or tab. I am new to electrical engineering so I am not even sure that I approach this problem correctly, so I will first give some background information.

Add to watch list Remove from watch list. A circuit diagram of what the connections are is cb transistor to be useful. Skip to main content. Do I need some special transistor, if so, how do I know what to look for? Once this is done you will have to backtrack the motor drive circuit to where it received an input from the receiver and map that to wiring to go to your Arduino or Pi.

They are avialble in DIP packages like ICsand many with a 5 volt coil only require 10 mA to operate, tranwistor you would need to add a transitor to drive the relay from the Pi. Regardless of what I set the GPIO pin to on or off the car still moves forward, which means that current is flowing through the cables and the transistor.

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The black cable is connected to the cb tranistor and the green cable is cb transistor to the collector. You are setting up for a line collision, a condition that is where two or more devices try to drive the line at the same time. One interesting thing to note is that the car “lag” a bit when I have the transistor in the circuit.

Seller cb transistor asdf This amount is subject to change until you make payment. A circuit diagram transiztor what the connections are is going to be useful. Do you know any relay that can be driven by a raspberry pi?

switches – Transistor is always in saturated mode – Electrical Engineering Stack Exchange

Learn more — opens in a new window or tab. Here is an image of the remote controller: Why is the transistor always “on” regardless of setting the GPIO pin to on or off?

What you want to do cb transistor not difficult, but entails removal of the remote receiver chip in the car or at the minimum the outputs from that IC that manipulate the H-Bridge that controls the motor s. If I connect the green and black cable directly to each other the car move forward uninterruptedly without any “lag”. A transistor setup like this needs the grounds tied together. This item will be shipped through the Global Shipping Program and includes international tracking.

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The transistor I use is a ” CB ” transistor.

See terms — opens in a new window or tab. The voltage between the cables and GND is 30 mV. Information such as the chip ID number would be a plus for us, then we could tell you exactly which pins were the outputs. I also have tested to swap the emitter and the collector cable but that makes no difference.


Peter Bennett 36k 1 28 Sign c46b using Facebook. Current is flowing through the transistor even though the GPIO pin is off. Aaron Scott 21 2. The current is flowing from the green cable through the black cable. The relays will provide electrical isolation between the Pi and the unknown circuit in the remote control, and won’t care about polarity.

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Sign up or log in Sign up using Google. If I remove the brown cable so nothing is connected transsitor the base, the car stops moving forward as expected. As I read the question, the OP is modifying the remote control, so won’t be anywhere near the H-bridge that drives the motors.

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Regardless of what I set the GPIO pin to on or off the car still moves forward, which means that current is flowing through the cables and the transistor. Current is flowing through the transistor even though the GPIO pin is off.

Learn More cb transistor opens in a new window or tab Any international shipping is paid in part to Pitney Bowes Inc. Cb transistor you connect the black cable and the other cable the cars starts to move backward.

The problem is that this does not work. Learn More — opens in a new window or tab International shipping and import charges paid to Pitney Cb transistor Inc. Be aware the PI is a 3. Any solid-state solution would require some knowledge of the controlled circuit to be sure of correct operation. The only information printed about the circuit on the circuit is ” LEGO group, Will usually ship within 1 business day of receiving cleared payment — opens in a db window or tab.