Questions tagged [remote-control]

For questions related to the remote control of devices and the design of remote controls.

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55 views

RC circuit - phase current

I have a simple RC circuit as below : I'm trying to visualize current curve and voltage curve (Vout and I(R1)) vs Vin using LtSpice and I obtain the result below: It's OK that the Vout is leading ...
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1answer
51 views

Diode in RC Filter

Is a diode ever used in an RC filter in the configuration below to stop charge from the capacitor flowing back to the source when it falls below the cap voltage (kind of like a peak detector)? Or why ...
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54 views

Wiring Diagram Help - 6v 'Power-Wheels' Ride-On Upgrade

Hello, I have a 6v Ride On toy car that I want to upgrade to 12v without upgrading the entire electrical system as it is only design for 6v. My issue? I'm not in the electrical trade and i'm trying to ...
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0answers
18 views

Electric skateboard ESC and homemade battery pack

I am building an electric skateboard and it requires an 80A ESC and 22.2V Li-po battery to run. I found a video where a guy connected a bunch of 18650 Lithium Ion cells in series to form an equivalent ...
3
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1answer
38 views

Dealing with a weak remote [closed]

I've got these LED candles with a remote: I've owned a few different models of LED candles in the past, and these ones are the best so far. They have a great-looking, strong light, and realistic ...
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1answer
63 views

Exactly what is an RTU (Remote Terminal Unit)?

I find the Wikipedia article and other sources ambiguous and I find that the definitions are so broad that I don't know how and when to use the term "RTU". I would like to figure this out because I ...
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2answers
76 views

I'm using four batteries with a total of 6 volts, but the lightstrip only needs five. How would resistance work? [duplicate]

The strip uses .5-2A and 5 volts. I'm using four AA batteries, so the voltage becomes 6. What do I do to reduce the voltage, and get the right current? Will the strip itself just draw the current in ...
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42 views

Recording IR data directly from Remote Control

I am trying to record the IR codes from my projector's remote. Nothing seems to be working and I need some help. I want to be able to directly record the IR signals that my remote is putting out when ...
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16 views

IR signal combining with Y wiring connection?

I need to combine the powered outputs from (2) 12v IR Receiver blocks at the tail end, with a Y-adapter to control an AV/R. Occasionally, output will come from both sensors. Is this likely to cause ...
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1answer
20 views

Can I replace the 433mhz modules on my homemade remote controller with a nrf24 transreciever

I built a simple 4 channel 433mhz transmitter and reciever because I can't afford a remote controller, the range is limited to 3 feet and nrf24 transreciever have longer range, so my question is can I ...
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46 views

NPN transistor doesn't work when base gets more voltage

I'm working on a project to control my tv with voice commands. I disassembled the remote control and i want to replace the physical switches that are beneath the buttons with transistors, so that i ...
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0answers
24 views

Help finding an appropriate driver for brushless motor

I have a 28mm wide dc motor in the device pictured here. I have removed the control board of the device and am looking to replace it with an external driver board with RC PWM inputs for control. The ...
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2answers
44 views

How should crane remote control diagram be connected? [closed]

could someone please explain diagram for the crane remote control. What does it means power1 and power2 and drawn coil? What does coil represents? Also there should be control for up and down (some ...
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1answer
77 views

12V lead acid battery instead of 11.1V LiPo?

I'm doing research on a remote control model ship. I have 11.1V LiPo batteries, but because of their weight and duration, larger batteries are considered better in this application (these batteries ...
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1answer
69 views

How do I emit an arbitrary 2.4GHz radio wave

I'm looking to create a microcontroller that would allow me to drive my ceiling lamp that is controlled by 2.4GHz remote. The end goal is to integrate it with home automation tools, and forget about ...
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10 views

Neural Network on Open MV cam

I am using an OpenMV M7 module to perform lane detection for an RC car and drive its steering. I also wanted to teach the device how to stay within the lanes using a neural network (I am new to NN and ...
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0answers
18 views

RS HMP4040 doesn't answer on emulated COM port

I try to control my NMP4040 via USB-emulated serial COM port. I have downloaded the driver from here. And I have assigned the driver to the device: I have connected to ...
3
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1answer
111 views

How to send a signal over long wire that is pulsing 9kV DC (agricultural electric fence)

Maybe a signals person can help me with this. I'm looking at building a circuit that can be remotely controlled, using an electric fence as the comms bus or antenna. I've seen this working in a ...
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3answers
79 views

RC Joystick Question: What is this component?

I am a electronics novice and I had a question regarding a small RC project I am working on. I am trying to control my transmitter with a raspberry pi. The RC unit is a twin electric engine boat. ...
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1answer
62 views

Fixing a TV remote with a low voltage button [closed]

I'm trying to fix my TV remote (Panasonic Viera) as one of the buttons has become unresponsive. I've cleaned it with alcohol and noticed the voltage across is just 0.3V rather than 2.7V across the ...
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1answer
52 views

How this remote control generates radio signal?

I have this RF remote control that I'm trying to understand (here is spec: http://www.telran.co.il/images/980305%20QK-M04%20TECH%20SPECS.pdf ). I recognize crystal oscillator that is responsible for ...
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1answer
70 views

Doorbell hack - remote unlock door

We need to use the audio output of a wireless doorbell to trigger a stable DC voltage which is going to keep switched a 3.3V DC relay as long as the audio output is present. The relay is supposed to ...
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1answer
30 views

Looking for a micro slide switch On/Off guard that will work on a vintage RC transmitter

I have a very old New in the Box RC transmitter but some of the plastic items are a bit brittle. Any ideas?
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1answer
54 views

IR emitter to keep TV on

We installed some TVs in the main floor of our facility. We have personnel here from 8am until 12am, and the TVs have been set to turn on at 7am and off at 1am. Sometime during the day, YouTubeTV asks ...
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2answers
218 views

I want to use logic analyzer to learn remote control IR codes

I've just ordered this generic logic analyzer (didn't get it yet). Does the specs (channels/speed/accuracy) of such a cheap analyzer can be used to analyze IR remote control code sequences so I'll be ...
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1answer
39 views

“Inverse rc” impulse response circuit

I am a digital design engineer and am struggling to come up with an analog circuit that could produce an (RC) curve like below. It does not have to be an exact RC curve. Something that comes close ...
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0answers
46 views

Simulating an RF remote control using an Arduino

I have a remote control for a video light, it's called 'Godox RC-A5'. The most detailed documentation I could find for it is here https://fccid.io/2ABYNRC-A5/Test-Report/Test-Report-2708894.pdf. The ...
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1answer
49 views

Control current to one of two loads on PCB

I am currently working on a project where 2 batteries powers multiple components on a board. A raspberry pi, 2 thrusters and a winch. Each device is powered via the battery and a buck converter. The ...
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1answer
76 views

Finding time constant for multi capacitor RC circuit

I need to derive an expression (with respect to time) of the current flowing through the short circuit. The capacitors are charged to some voltage value. I know the solution but I am trying to ...
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1answer
66 views

Infrared device responds to multiple remotes/“wrong” codes

I have multiple IR devices controlled by my Raspberry Pi: LED strip HDMI input switcher I used irrecord/mode2 to build a config file and both devices respond properly to the raw codes I found. ...
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2answers
93 views

Wireless game controller - polling vs events

I'm creating wireless game controller, but I have problem with sending data - should it be in polling mode or event based? For analog axes I think that polling is better. 100Hz or more polling rate, ...
2
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1answer
200 views

Changing the receiving frequency of a cheap RC car [closed]

My kids both have a RC car and unfortunately they both work on the 27MhZ frequency range, which means they can't both play at the same time because of interference. I opened up one of the two cars ...
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2answers
32 views

ic to drive either one pwm signal or another

I have an existing RC circuit for a toy truck. Obviously it already has its own mC to receive the antenna signal and output a PWM signal to a motor driver IC. I want to be able to ALSO control this ...
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0answers
83 views

How can we actually use PPM output from a RC receiver

I'm using FS-CT6B transmitter with R6B receiver. I have seen many code examples and tutorials for reading PPM output from R6B using Arduino Uno. In some of them, only one pin is used (external ...
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3answers
84 views

How to decode an IR from device [closed]

I have the Mitsubishi DA-R45P receiver, but I don not have a remote for this device. And without remote this device can not work. I see that there are universal remotes with learn function, but for ...
3
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2answers
361 views

What does it mean to “swamp” a radio signal?

Context: It frequently happens that when a particular brand of RC transmitter and receiver are too close (within a meter) the two units lose connection. The recommended fix (which works) is to move ...
4
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1answer
2k views

Super Regeneration Detector

This is a circuit for a remote control toy receiver. Can someone help me understand this. Connecting the antennae to the collector makes no sense to me. RF is my weakness. Datasheet where this came ...
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3answers
4k views

Wouldn't putting an electronic key inside a small Faraday cage render it completely useless?

Am I missing something? The Engadget article Kia made a tiny Faraday cage to protect your wireless key from thieves says: Many existing keyless entry systems aren't secure, but few people are ...
4
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1answer
226 views

How do I trigger capacitive touch screen electronically (without hands)? [duplicate]

I would like to trigger a "touch" or "touches" to a smartphone screen electronically without actually touching the screen with my finger using a remote control somehow. The idea would be that every ...
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2answers
72 views

Solar RC Airplane – Trouble with Mini Solar Lipo Charger

I'm in the process of building a solar powered remote controlled airplane. My general idea was that I have 5V from the solar panels powering the receiver, the ESC, two servos and a brushless motor. If ...
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1answer
233 views

Single transistor IR repeater

I need the IR repeater to pass IR (TV and so on) remote signal to remote devices in some box (pass the IR signal from outside the box). So, I bought a cheap IR repeater on single 2TY transistor, 4838 ...
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1answer
101 views

4x 2:1 Multiplexer with multiple select lines. Does that exist?

I have been checking different supplier websites, and can't seem to find what I am looking for so I am wondering if it even exists or not. I am looking for a 4x 2:1 MUX IC with 4 select lines. I am ...
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2answers
126 views

Is it possible to replicate a Novotron 522 remote control?

The signal I want to replicate is to open/close a garage door, operated by a Novoferm motor. The remote control used is a Novotron 522. The description states this is 2-channel remote control, ...
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0answers
79 views

Automate sequence of different remote control presses

I've got the following setup I would like to automate: Press button A on a remote to turn the alarm system off Press button A on a remote to open the garage door Press button A on a remote to close ...
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0answers
93 views

Selecting RC filter components for half wave rectifier

I have a circuit where Input is a Sine pulse of 40V Amplitude and the circuit is as shown: After redtifier diode , there is a RC FILTER. I have used a tantalum capacitor and 0603 resistor. I was ...
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0answers
195 views

220 volt ac to 12 v dc converter without voltage regulator

I want to design Additional RC Filter. My input is 220V AC and I want to observe 12 V DC output. I am designing 100 Hz with a full-wave bridge rectifier. My question how can I find the output of ...
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3answers
169 views

Speed limiter - 24v Motors

I'm looking for a way to limit the speed of some wheelchair motors in order to gain better control when using them in my RC device. Currently the motors are very sharp and don't ramp up to speed, ...
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3answers
168 views

Help identifying an SMD component [duplicate]

I need help identifying an SMD component it is a small(1 mm X 1.5 mm) black part with an "O" written on top if it. I think it is a Schottky diode for reverse polarity protection ?. (Source, first ...
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1answer
595 views

433Mhz Remote Control Antenna Selection

First I want to thank all of you who come here and help others. That is very kind and unselfish of you! This is lengthy but I want to make sure I tell you everything you need to know to answer this ...
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3answers
128 views

Voltage in an RC Circuit

I made an RC curcuit on a breadboard gave it a of 25V measured the voltage across it with an oscilloscope. During my experiment it has come to my attention that the peak voltage level was getting over ...

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