Questions tagged [remote-control]

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

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BLDC motor and bullet connectors getting hot

I am using the following components: Lemon RC 3S-2200mAh 25C/ 50C (burst) LiPo battery Readytosky 80A ESC DYS D2726-6 BLDC (2200kV BLDC motor) I am testing out the components with 1045 (10 in, 4.5 ...
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71 views

How to fix the keyless key (replace the antenna) of Mistubishi Outlander?

Background story: I had a keyless keyfob for my Outlander, and lost it. I went to the service and they configured a new key for me. The serviceman told me that many times when the key falls the ...
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-1 votes
1 answer
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Find time in RC circut with known C and R

In a series RC circuit with a voltage source the Capacitance(15uF) and Resistanse(22.4ohm) is given. The time at which the Voltage across the resistor is same as the voltage across the capacitor is ...
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Positive and negative voltage readings across a rig simulating bearing contact, supplied with a DC source

I recently ran a few experiments to simulate the effects of shaft voltages on motor bearings through using a simplified experimental rig. The rig simulates bearing contact. I applied a DC source ...
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3 votes
1 answer
105 views

Positive and negative overshoot mitigation

While tuning a 12.5 MHz 3.3V signal (square wave expected 3.3V to 0.0V,) I am seeing overshoot reach of +5.0 V and negative overshoot of -2.0V. I am intentionally not using the term undershoot here as ...
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Why is my infrared receiver working on my Beaglebone Black but not my Raspberry Pi?

I have a TSOP4438 wired to GPIO pins of a Raspberry Pi Zero W and Beaglebone Black as shown in the diagram: I'm trying to use this to control my Pi with an old Roku remote. I initially tried this ...
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How to reprogram ADY501?

I have wireless controlled room light with remote, it has two buttons: ON and OFF. Everything was working fine until recently. I was sitting on my bed with a laptop and decided to go to the kitchen ...
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2 answers
76 views

How to repair a broken 2.4 GHz remote control? [closed]

I have bought a Remote Control Drifter Stunt Car (Z109S). Unfortunately, part of the remote control has been broken. I tried to solder the broken path but still not works. Is there any specification ...
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2 answers
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Sync switchable wall outlet with another wall outlet remotely

This could be an existing product (please tell me what is called), or the idea of a new product. Current setup: a wall outlet in the far end of the room is linked to a a switch near the door. ...
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  • 101
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2 answers
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ENIG or conductive carbon for small-run remote control PCB?

I'm working on a replacement PCB for a handheld consumer IR remote control transmitter that uses standard silicone keypads. The client plans to run only around 50 of them. I prototyped the new board ...
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What LC tank circuit is needed for a 318 MHz remote control 9 DIP switch for a garage door controller transmitter opener using the PT2262 IC?

I want to use the PT2262 remote control encoder to create a garage door remote. This is just for fun. (I realize I can get a universal controller 318 MHz 9-DIP switch remote for about $16.) I was ...
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3 answers
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How to communicate short-distance (under sea) using induction?

I need a bite-throttle on my scuba-regulator to wirelessly control my foot-mounted thrusters, which are about 1.5meters distant from my transmitter. I need only "1 bit" (on or off) right ...
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69 views

Help me identify this component in an RF transmitter

This is from a 2-channel RF Transmitter FlySky FS-GT2. I think the antenna's wire should be soldered onto this RF transmitter PCB, flat silver component, however, I do not know where to solder because ...
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2 answers
97 views

Understand the calculations in an RC circuit - voltage division to polar form

I'm missing some calculation steps in an AC RC-example, and I can't understand how to get to the next step. If someone could show me, I'm sure to understand the rest. Example: A standard RC-circuit. <...
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Duplicating a 433 MHz remote control that uses "rolling code"

I'm having a 433.92 MHz standard remote control which uses "rolling code" encoding. Are other "rolling code" encoding standard remote controls interoperable, or do I need a more ...
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1 answer
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Switch LEDs with Servo control signal / PWM

I have a RC receiver that produces a PWM signal for hobby servos (specs below). I would like to control some LED lighting with it. What are my options? I obviously do care about weight, like I do ...
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RC PWM question - dimming LEDs

I have some automotive LEDs that I put onto an RC car. I use the RC car's 4S LiPo (14.8v) to power the LEDs and they are great. I use a hobby PWM relay board to turn them on and off and that's slick; ...
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83 views

How to identify a 2.4Ghz RF chip from LED panel remote (Albrillo)

I am attempting to identify two chips used in a remote control that enables the use of LED panels. I am trying to automate the turn on/turn off without using the remote by emitting the same RF message ...
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1 answer
63 views

Connect a remote control to a laptop [closed]

I am very new to electrical engineering but I wanted to make a project using a remote controlled car. Is it possible to connect the laptop to the remote control via a wire/cable and if so which? ...
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1 answer
62 views

How to reattach LCD to pcb that has power but no data?

Where do the lcd data connectors actually attach? I have been researching to attach lcd to pcb but every example I find has notiable pins from thw lcd. I can see the pins on the board but how do they ...
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-1 votes
1 answer
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Throttling of Electronic Speed Controller with 6S lipo

Thanks for having look at this. I had an turnigy 150A ESC and 2000KV bldc motor. I calibrated ESC and it happened perfectly. I connected 3S lipo to ESC and increased the throttle from 1100uS to 2000uS....
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1 answer
84 views

2.4GHz extension for RC [closed]

I’m very new to this field. We just purchased a ride-on car for our toddler. Everything works well but the distance between remote and car is limited to approx 30 ft, which we were hoping to extend. ...
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1 answer
415 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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2 answers
225 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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1 answer
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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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-1 votes
4 answers
570 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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102 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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0 votes
2 answers
71 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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1 vote
2 answers
87 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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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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1 answer
267 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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1 answer
70 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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0 votes
1 answer
54 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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2 answers
133 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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1 vote
0 answers
46 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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1 vote
1 answer
125 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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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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1 vote
1 answer
68 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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2 answers
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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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9 votes
2 answers
2k views

Where is the antenna in this remote control board?

This is a PCB of a (radio?) remote control.
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0 answers
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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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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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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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-1 votes
2 answers
235 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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1 vote
3 answers
55 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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-1 votes
1 answer
59 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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3 votes
3 answers
178 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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0 votes
0 answers
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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8 votes
2 answers
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 ...
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2 votes
1 answer
655 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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