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Questions tagged [remote-control]

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

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20 views

How do I charge a 2S 250mAh 7.4V LiPo battery?

I have a Venom brand 2S 250mAh 7.4V liPo that I would like to recharge, but have no idea what charger to buy. Here's the link to the battery so you can see what it looks like: https://www.amazon.com/...
2
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1answer
28 views

Remote Start for my Dust Extractor

I have a 1.5kW 220VAC 1 Phase dust extractor. It's controlled by what looks like a DOL switch KJD17B/5T (so I assume the 5th terminal is an overload). KJD17B Datasheet Wiring diagram on duct ...
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1answer
59 views

What's the frequency used by the remote control of this RC car?

I'm trying to find out the frequency used by my RC car. In particular, what band it runs on (27MHz or 49 Mhz or something else). It looks like this: And the back view:
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2answers
2k views

How do universal IR remote “codes” work?

It is easy to find this kind of reference when searching for IR protocols and codes for specific equipment. The actual IR transmission contains far more data than these small codes can hold. What ...
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0answers
56 views

RF Receiver circuit for RC Car

I want to build a RC car, which I can modify at any time,and I had this PT8A978BPE IC (datasheet:https://www.diodes.com/assets/Datasheets/PT8A977B978B978BL.pdf) lying around from an older teardown of ...
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2answers
90 views

Light circuit for RC car

I'm building a small light system for an RC car, this is the schematic: The power source is 5.5 V. These are the LEDs that I am using, KKHMF 100個 3mm LED 発光ダイオード LED電子部品バッグ 5種類 各20個 - two white, ...
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0answers
39 views

Simulating a remote controller using CANopen

I am trying to simulate remote controller`s behaviour using the CANopen( for instance : joystick movements to move the correspond axis). This is how I approached to solve this problem (robot node = ...
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1answer
67 views

Drone's Remote control not powering on! [closed]

I am using bayangtoys X16 GPS drone. I managed to solder the "alfa APA-M04 7 dBi gain RP-SMA directional panel antenna Wi-Fi" on the board, and it was working absolutely fine. Until, I put hot glue on ...
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3answers
52 views

Difference between lower and higher current rated ESCs and electric skateboard questions

I am starting a project and would like to build an electric skateboard. Here are the specs for the parts that I have gathered so far: a. Two 90mm wheels that each contain a built-in BLDC motor. The ...
1
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1answer
92 views

Why we can't copy car remote patterns?

I have a set top box remote that I can use to control set top box as well as TV by using the set button on my stb remote.That remote can copy any remote IR pattern but when I tried it on a car remote ...
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1answer
47 views

Lpf ramp response intution [closed]

How to intutively draw ramp response of low pass filter intutively . I am able to do it from laplace transform but i am unable to understand..
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2answers
113 views

Low Pass RC Filter for Load Cell

I have a load-cell setup with some noise that I would like to filter out. I have a vague understanding of low-pass RC filters. I have a strain gauge with 350 ohms of resistance (no load). How can I ...
2
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1answer
396 views

how does ceiling fan remote implement reverse function?

Most ceiling fans come with a remote control transmitter/receiver pair. The transmitter is hand-held or wall-mounted, and the receiver is installed in the ceiling box. Input to the receiver is a 2-...
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0answers
32 views

Inducted LED control circuit design

I would like to build a circuit to control 4 LEDs via an inducted current. I would like the inducted current to provide the power for the LEDs, however I would like the LEDs to be lit in a certain ...
2
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0answers
163 views

A curious 433 MHz signal to decode

I bought a cheap set of remote controlled power sockets and I want to integrate them into my home automation system. So I got a 433 MHz receiver for 1€, connected it to my Arduino and tried to decode ...
3
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3answers
198 views

Yet Another question on using GPIO to short a remote push button

OK, I bought this little remote-controlled Ac outlet thing for $1. It controls 3 outlets via RF. I didn't realize it was RF at first, but I currently have my BeagleBone Black doing a bunch of home ...
0
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1answer
53 views

Low power local area radio controller chipset [closed]

I have a project where I need to remotely control up to 128 individual relay boards within a maximum 30 meter radius. I need each of these wireless relay controllers to be uniquely addressable to ...
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2answers
184 views

Are IOT wireless network protocol right for high throughput point to point communication?

I am trying to build a "professional" 2 way point to point radio system (like this) to control a RC 1/10 scale car (like this ) using UART, the challenge I am currently facing is finding the right ...
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0answers
35 views

Bluetooth Controls instead of R/C Controls for simple Holonomic robot

I am new here and with little experience in electronics. I have assembled this holonomic robot, see link: https://shop.wickeddevice.com/product/omniwheel-robot-complete-kit/ It has 3 Omni-...
0
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1answer
33 views

Is it possible to read/pair ESC (2.4Gz?) signal [closed]

I'm new to ESC, sorry if this is a noob question, is it possible to somehow pair or read the battery level from an ESC? What I'm looking for is to read the battery level from an ESC electric ...
2
votes
1answer
147 views

Replace batteries of 20 TV remote controls

For an artistic installation, I need to use 20 TV remote controls. So I would like to replace their batteries (1.5V * 2 = 3V) with a single power supply. How to connect the remotes controls? In ...
2
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2answers
68 views

Does the remote car door keyfob in today's automobiles change its code with every use?

I am just wondering why other keyfobs do not open my car door and thought every signal would have to be unique. So I did some research and they use a rolling code so in fact the code changes with ...
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0answers
26 views

How does the PT2264 determine how many address pins are in use?

So, I'm looking into making a little device which uses an 433MHz transmitter and a PT2264 or LP801B. While reading the datasheet for the PT2264, I'm a little confused on how it is determined, how ...
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1answer
55 views

Chinese FrSky radio receiver, what is this component? [closed]

I have one of these cheap chinese RC receivers mounted on a quadcopter. After one too many hard landings this component broke into pieces. I would like to try repairing the board by replacing it, but ...
2
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1answer
55 views

How to observe the signals of a radio remote control using CubicSDR?

I have to admit I'm a complete newbie with regards to radio frequencies and such ... :-( Thanks to this site I've been able to find out what transceiver is being used in the remote control I'm ...
5
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2answers
802 views

Why IR remote waveform is a saw-tooth or am I measuring it wrong

The measurement circuit is as follows: simulate this circuit – Schematic created using CircuitLab The waveform looks like this in my measurement: Is this because I'm measuring it wrong and ...
1
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1answer
72 views

Find datasheet for an industrial radio remote control

At work, we have what seems like radio-based remote controls to control the window stores, the light and the temperature. We'd like to find out what the commands are that are sent by the remote ...
0
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1answer
35 views

How to Increase Velocity of a Servo motor, relative to resistance?

I am building a RC car which increase its speed to compensate any obstacle on its way. A simple 4 wheel RC car, with current sensor on the two front wheels, when an obstacle is placed in front of the ...
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2answers
69 views

Is there a laser inside this remote control? [closed]

I wa at this store with furniture and saw this control and was looking at it and in the middle of one of the buttons there was a really bright green light under it and it felt like it stunned me I ...
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0answers
40 views

HCS301 Remote External Antenna

I would like to amplify the range of my remote control which is built on HCS301 chip (it's a KeeLoq remote). I'm not sure where should I solder the external antenna to be the most effective. Also, I'm ...
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0answers
42 views

Locating ground and other pins on circuit board

I am a beginner attempting to learn how to hack RC cars like is demonstrated in this video. My problem is I can't spot the ground pin and the other pins related to the wheel drive functions except I ...
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0answers
46 views

Max Current Supplied By Lithium Polymer Battery For QuadCopter

I am just to build my own quadcopter and I have just started this month. I have a question regarding the battery to select. Here are the components I have bought: 4X Racerstar Racing Edition 2205 ...
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0answers
42 views

RC relay range drops dramatically when under load?

I'm trying to control an 12V air pump remotely, so I used a 12V RC relay as the like below, so everything in the system is 12V. http://www.ebay.com.au/itm/Smart-DC12V-4CH-Channel-315MHz-Wireless-...
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2answers
71 views

Can an IR blaster built-in to some devices damage appliances? [closed]

I once have a tablet (Samsung Galaxy Tab 3 GT-P5210) that has an IR blaster built to it. I sometimes use it to control the TV on our house if the remote is lost. Now, I don't understand that if I ...
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3answers
56 views

How to provide power to Arduino after a remote button is pressed

I have one of these IC 2262/2272 Wireless controller and receiver. If managed to connect it in such way that the Arduino blinks a LED after a button is pressed, it works fine. My question is, is it ...
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2answers
660 views

Keep relay energized longer with capacitor [closed]

OK, I've found plenty of questions about relays where either the person wanted to have event 1 at time T trigger the relay at time T+delay (like flip a switch and have the relay energize 2 seconds ...
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0answers
19 views

rc series circuit voltage didiver in resistor and capacitor

how to see voltage in RC series circuit i have 27 ohm resistor and capacitor 85.71 micro farad and total voltage is 45 v. how many voltage drop in resistor and how many voltage drop in capacitor?
2
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2answers
1k views

What RF transmitter and receiver to buy for long range

I have 3 main questions that I want to know. I mostly worked with computer science but recently I got an arduino to play around with. I also extracted some motors from an old rc quadcopter that i had. ...
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0answers
207 views

How to switch on PixMob-like led bracelet?

I've a led bracelet, which was switched on and controlled by concert organizer (the bracelet called 'fanband' and according to the official site controlled either by special remote or by sound). I ...
3
votes
5answers
167 views

Can adding a copper plane to the 2.4GHz antenna amplify signal strength?

Hello, I bought a 2.4GHz controlled RC car from a Chinese vendor. Under the car chassis, there is a 30mm x 20mm copper plane attached. Surprisingly, the customer's service team replied that "it's ...
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1answer
545 views

How to connect a 2.4ghz 4ch RC receiver to a brushed dc motor controller?

I currently have a 36vbdc 800w motor connected to a 36v 800w motor speed controller (similar to what they use to control ebikes) just like this one: https://aws.robu.in/wp-content/uploads/2016/02/...
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0answers
37 views

WEMO switch and Sodium lighting

Why can't the WEMO switch from Belkin be used with sodium discharge lights? I am investigating the purchase of a switch to remote control some driveway lights which I believe are sodium discharge ...
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0answers
508 views

BLDC torque control using arduino and a motor controller

I am trying to remote control a BLDC using Arduino and a motor controller by controlling it's torque. The process would be like this: The user moves the stick on the remote controller, the Arduino ...
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2answers
634 views

How does this Pierce Oscillator work?

I am currently investigating on how to build RF transmitter and receiver circuits to try and build an RC device from scratch. I've come across this Pierce Oscillator Diagram and build it on a ...
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0answers
72 views

Long Range and High Speed RF module?

I'm dealing with a project RC plane. I can not find the module I need, because I have no technical knowledge about RF. I found some modules such as HC-12, Si4432 and nRF24L01 + PA + LNA during ...
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1answer
71 views

Are there any ways to improve this ISR - STM32F401RE?

I am currently coding a flight controller from scratch and am currently working on the module to decode the incoming PPM signal. Keeping in mind that this is an ISR, I've limited its functionality ...
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2answers
393 views

Transfer function of three cascaded RC filters?

I am looking for the transfer function of three cascaded RC filters: I have found the solution for two RC cascades (components differently labeled): I need an analytical expression like this one for ...
2
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1answer
101 views

Switch from one battery to another when one is discharged/disconnected?

I'm trying to figure out how to switch source power from one battery to another when one is dead or disconnected. the circuit needs to be able detect the loss of power on the jettisoned battery and ...
0
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1answer
46 views

Infra red remote control very short range

I bought a house that has a few LG split air cons. Whenever I want to use them I need to get like 2 meter close to them for the remotes to work which feels too short and annoying. These units are 10 ...
0
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1answer
113 views

My RC Time Const. Calculations are wrong. Circuit changes my input signal

I have a simple RC circuit of 22 ohms and 3.3uF My measured values put the resistor at 22.10 ohms and the cap at 3.15 which gives me a time constant of 68.5 uS The signal applied is a 100Hz Square ...