# Using XBOX controller as RC Car transmitter - basic circuit help

#### FunnyDuckFace

Joined Mar 19, 2019
2
I'll be upfront it's a bit of a hack but I am splicing the xbox controller outputs into the transmitter the issue I am having is that the voltage output is out so I figured I would use some resistors and a diode to solve this problem.

I need a minimum voltage of 1.78 this is neutral anything less and the brake is activated
I need a maximum of 2.69v this is full throttle

I think I have come up with a circuit to do the job but I have no idea what to ask/look for when purchasing the parts, ie what resistors a small circuit board and a diode.. also could I swap the two resistors for two potentiometers to allow for a bit of trim? again what would I ask for over the counter?

The potentiometer on the diagram is the xbox trigger.

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#### FunnyDuckFace

Joined Mar 19, 2019
2
I've edited my post hopefully this will help

To summarise as per moderators request:

1.Is there a better way to achieve the circuit pictured below?

2.How do I find a resistor with a value of 109ohms and a resistor 8.8Momhs for a voltage of 3.29v from an electronic outlet?

3.What would I ask for if I wanted a potentiometer that covered the two values above?

4.What sort of diode do I need?

I used an online program called https://www.falstad.com/circuit/ to calculate the values. Here is a link to my particular circuit

The resistance in the pot is an unknown to me as this is the trigger within the xbox controller that I plan to use but it seems to go from 0 to 100% of the input feed.

The switch was just in the original - I've removed it as it is not necessary

Apologies for my lack of electronics understanding.

I am adjoining the xbox controller outputs to a radio controlled car transmitter.

I need a minimum voltage of 1.78v DC this is neutral anything less and the brake is activated on the RC car I need a maximum of 2.69v DC this is full throttle

I think I have come up a circuit to do the job but being non technical I need help creating my bill of materials

The potentiometer on the diagram is the xbox trigger.