Questions tagged [remote-control]

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

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1answer
66 views

Issue with wiring eMylo remote control switch

My eMylo switch has five electric sockets (which can be wired.) The wiring diagram shows that the input positive (anode - the red wire from the 12 DC power) must be wired to the most right socket of ...
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2answers
59 views

How to increase torque in a BLDC motor

I have a 350kv BLDC motor and a 150 amp ESC. I'm using them to run a boat prop. It spins with plenty of speed in the air but as soon as I put it in water the ESC shuts down. The battery has plenty of ...
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1answer
33 views

Photodiode for PT2222

Recently I dropped my Bluetooth speaker remote and it stopped working. After testing it with remote control diagnostic tool (one of the cheap component testers from eBay that also decodes remote ...
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4answers
156 views

RLC circuit square wave input , why isn't the output a square wave?

In an RLC series circuit if we provide a square wave signal to it, why is the output signal at R not also a square wave? Is it sinusoidal wave? I am running the simulation on Multisim.
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0answers
51 views

Does anyone know about this IC/chip from and RC helicopter?

I have an RC helicopter toy (FastLane RC Pro Flight Helicopter) which I had to disassemble for fixing. I have a chip/IC on the pcb board of that helicopter. On the chip it says 103FMTB11. I would ...
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2answers
52 views

Is running 4 18650 batteries in parallel too much current for a small RC circuit with the same voltage?

I built this small RC deadbolt lock and everything works great, however, I need to fix the issue of battery life before it is finished. Originally the circuit had a 3.7V, 800 mAh battery. I would like ...
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2answers
81 views

Purpose of Cap to Ground in this Circuit?

I came across this circuit and I am curious about the reason for C2 being where it is. If I am analyzing the circuit correctly, this is effectively just C1 and C2 in parallel. What is the benefit of ...
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1answer
58 views

Using a UA741 IC as sensor for an existing AA LED

I am trying to know if an air conditioning is ON/OFF (Daikin with only Wired Remote Control). I want to read its LED. The circuit is fed by a simple 17.8 V two wires from the machine. I've read the ...
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1answer
62 views

Making an ESP32 based flight controller [closed]

I'm trying to make a flight controller for brushless quadcopters with ESP32 using external sensors like MPU6050(Gyro & accel), BMP180(Baro), HMC5883L(Compass). I've seen lots of people make this ...
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1answer
42 views

ESP32-Cam GPIO remote control and video feed

Is it possible to control the ESP32-Cam GPIO from the web? Just like a "normal" ESP32 can create a website with buttons that turn on and off certain GPIOs Was wondering because I can't find ...
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1answer
47 views

How do I send a signal from my computer to my USB antenna

I'm trying to make an RC car that can be controlled by my computer. The heart of the car is a simple mother board from an old toy. It basically accepts a signal 49MHz from a controller with a 9V ...
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2answers
73 views

Troubleshooting IR emitters using an Arduino

I've been trying to get an Arduino to replicate my air conditioner remote signal for quite a while and I'm almost giving up just based on how annoying this task is. First things first: The Arduino I'...
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0answers
39 views

Remote Operation of Toggle Switch

I'm working in a laboratory environment, where we need to change the state of a few toggle-switches from time to time. As we want more and more remote control in our lab, these toggle-switches need to ...
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1answer
78 views

How do I calculate the transfer function of this basic terminated RC filter?

I'm reading through an electronics book to teach myself, and I'm in the section about filters. I've been following along so far, but now I'm confused about how the author came to a conclusion in his ...
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1answer
25 views

Easiest way to switch device remotely with low power [closed]

I have a simple RTC module with alarm function - think alarm clock with no display. Most alarm clocks run all year on AA battery power. I’m looking for an easy way to turn the alarm off remotely from ...
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0answers
41 views

Simulate press on a rubber button infrared remote control with a Raspberry Pi

I'm stuck. I'm trying to use a Raspberry Pi to simulate a button press on an infrared remote control that uses conductive rubber buttons in order to control/automate a toy with Python. Really grateful ...
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1answer
60 views

LEDs for model ship [closed]

My dad built a model ship and wants some lights - kind of like the attached photo. His request: Small, the LED must fit in a 1/2 inch space. The LED must be dim and amber in color,, flicker if ...
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2answers
50 views

Can you explain the operation of this RC network for a crystal oscillator? [duplicate]

I am trying to work out what the RC network in the circuit below does and how it works. The circuit output is fed as input to a CD4060 binary counter. According to what I have read, the signal from ...
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2answers
2k views

Where is the antenna in this remote control board?

This is a PCB of a (radio?) remote control.
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0answers
25 views

Trying to figure out an RC Plane Solar Charger

So for a project I am looking at making a solar charge controller for a 3S Li-Ion battery system used in an RC Plane. The issue I am running into now is that I am unsure how to go about designing the ...
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0answers
66 views

How to overdrive a 5W IR LED for laser tag

I am a bit of a noob regarding electronics, but hey, I guess I need to start somewhere. Here is the premise: I want to build the Arduino Laser Tag Link: and all went fine until I stumbled upon ...
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0answers
171 views

Why does MOSFET get damaged when used as a switch in a RF remote control circuit?

simulate this circuit – Schematic created using CircuitLab Update: The MOSFET gets damaged when not running the motor even once. Maybe even without connecting the motor at all. There is an alarm ...
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0answers
28 views

How to make a pairing and mode button on a remote control receiver

I'm working on a remote control project and have come across many different RF receiver/transmitter modules. Many have a pairing/mode button on the receiver that serves to pair the receiver and ...
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2answers
101 views

Is there any dedicated IR receiver IC with atleast 5 output pins

I want to know if there is any IC available that can decode an IR remote to its different pinouts or I have only option to program a microcontroller to achieve it.
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3answers
51 views

Light coming from the room influencing TV

Inside the TV Remote we have a LED of infrared light which sends commands to the TV. Isn't it influenced by the light of the room(if any?).I thought if an electron in the valence band absorbs a photon ...
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1answer
46 views

Is it reasonable a remote control works after being heated?

The remote control of my TV set is failing and I probably have to buy a new one soon. I changed battery, including from other device that is working, and there was no improvement. But it is ...
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2answers
74 views

Headphone jack IR transmitter not working reliably

I'm working on a project to build a remote control app for some IR controlled toys like DeskPets, Robosapien, TOMY etc. including an IR transmitter that (hopefully) has a very high range. I built an ...
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0answers
50 views

time constant of rc circuit

How to calculate time constant of this circuit. .. and how the time constant of C1 and C2 are related
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2answers
3k views

Why can I see remote control radiation on my phone but not with my eyes?

I made this little video. You can see a white flickering light coming out of my remote control. When I look at my remote control with my naked eyes, there is nothing to see when I press a button of ...
2
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1answer
235 views

How to identify burnt out component

My sons birthday present literally went up in smoke when batteries were inserted. I will eventually get a replacement but it will take time and I'd love to be able to fix this as soon as possible. It'...
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1answer
68 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
280 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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0answers
2k 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
27 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 ...
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1answer
44 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
99 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
160 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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0answers
49 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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1answer
30 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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0answers
49 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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2answers
58 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
471 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 ...
0
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1answer
95 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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0answers
21 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
120 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
105 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
65 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
91 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
137 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 ...
0
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1answer
33 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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