For questions related to the remote control of devices and the design of remote controls.
-1
votes
2answers
72 views
iPhone control LED light without wifi
I am fresh to the electrical engineering, and actually I am a web developer, ruby and php, etc. I am wondering that is there a simple way to control one or more LED lights using iPhone without wifi ...
-1
votes
0answers
44 views
Looking for a simple design for building a remotely controlled bell [closed]
I want to control a bell remotely. The purpose of this apparatus is to allow a translator to notify the speaker when to pause his speaking and when to resume.
The apparatus should be as simple, ...
2
votes
2answers
87 views
What is the capacitor charging time when charged with a pnp current mirror circuit?
I want to use a 555 in monostable mode to make a ramp signal generator. The capacitor would be charged using a current mirror circuit.
Given a input voltage, what would be the charging time of ...
-2
votes
0answers
43 views
Battery Leaked In Motorcycle Alarm Remote [closed]
I left my remote controls (both of them) in a locker for about a month... I think it must have gotten really warm in there because in both of the remotes the batteries had leaked. Anyway, I put a new ...
-3
votes
1answer
65 views
How does remote switches learning system work? [closed]
I've been searching like crazy for none success so now im asking you guys.
You know these electric control switches that you can turn on and off with a radio wave remote control? Usually the remote ...
1
vote
3answers
80 views
Identifying SMT element 331K
I am trying to repair a remote from a car lock. The symptoms are that a red led is lit longer than usual after button press and no respond from car lock. It works sometimes. The battery and ...
0
votes
1answer
232 views
Using a PNP transistor with Arduino to close a circuit
I have teared down a radio controller of an RC car. I'm trying to control the car with a PC through Arduino Mega 2560 Rev 3.
The controller is very simple. It takes 9 V in. There is six wires to ...
1
vote
1answer
88 views
Controlling Analog RC Car Remote with Arduino
I want to take my RC car remote, which uses a potentiometer to control throttle, and connect it to an arduino in order to control the cars speed. The ardunio fits perfectly in the base of the remote.
...
0
votes
2answers
112 views
IR Remote, use a relay to send on and off pulses
I have a little problem. I'm using the raspberry pi to send a output signal from the GPIO pins to activate / deactivate the relay. I have a IR remote, when i short the two "connectors" on (for example ...
1
vote
1answer
150 views
IR remote output signal without IR Led and TSOP
I have IR receiver module based on AVR + TSOP, it gets IR signal from remote and passes it to RF tranceiver.
Now I want to make some improvements and try to connect output (IR Led pins) of IR remote ...
3
votes
2answers
145 views
Identify an IC Found in a Garage Door Opener
Inside a defunct garage door opener I found this IC:
I tried searching for 33192C with variations of 'datasheet' and such keywords, but I got routed to the usual datasheet farms who are happy to ...
1
vote
1answer
198 views
Arduino infrared problem with universal remote
I am playing with Arduino and Ken Shirriff's IR library. I am trying to control Sony audio receiver using codes I found on the net.
Everything works OK, I am able to control the device by sending IR ...
0
votes
0answers
42 views
tsop1738 inconsistent results for the same button presssed on remote
I'm using a tsop 1738 connected to my arduino. I'm using the ir library from shirriff. I do get some results printed in the serial terminal however the results are different when I pressed the same ...
0
votes
1answer
58 views
RC AM senders/recievers: Changing the crystals, and using Servo PPM as a 1/0 switch
I am trying to use a 27mhz RC car controller to send to an RC Car AM reciever and use that output (short 1-1.5ms pulse of a few mA) to trigger a 5V relay, with the signal stabilised via a ...
1
vote
1answer
332 views
Arduino alternate PWM input method
I'm working on a rudimentary flight stabilization system for an airplane, which reads in 4 PWM inputs from an R/C receiver. The problem is, the pulseIn command is taking far too long to execute, so I ...
1
vote
1answer
122 views
Where to place a RC filter regarding decoupling capacitor?
I would like to add a low-pass RC filter (500Hz) to the power rail of a TLV2782 op-amp. Datasheet of TLV2782 recommends two decoupling capacitors: 0.1uF and 4.7uF and they are currently placed on the ...
0
votes
0answers
164 views
Replacement for 5610 Transistor
I have a circuit (from a RC car) that uses a 5610 transistor, which can't find in store.
Is there any equivalent transistor?
Here are pictures of the board (click here for high resolution images):
...
3
votes
1answer
857 views
Are there any RF remote control circuits without any ICs?
I'm currently trying to make a simple 3 channels RF remote control circuit but without any ICs or micro-controller. I'm Googling but it seems to not populate (useful results). Does anyone have ideas?
3
votes
1answer
332 views
Controling a regular residential 110V/15A circuit switch (or relay) from a PC
I am a software engineer by trade and also a rather skilled and well rounded (residential) builder with a special interest in wiring. I have rewired my entire two-unit house, panels included and seen ...
1
vote
1answer
248 views
How to calculate the range of a RC transmitter
When searching for a transmitter for a RC application in most of the cases they don't provide anything about the range of the module. Just power and the frequency.
The Tx power must relate to the ...
3
votes
1answer
122 views
Aren't UBEC's just packaged voltage regulators?
I'm working on a project where non-trivial currents (theoretical peak ~6A) are needed at several different voltages. Since this is battery-powered, I initially started looking at finding an ...
1
vote
1answer
146 views
Voltage regulation threshold
I am designing a 5V digital circuit and I want to make it generic so the user has some flexibility in the VCC input limits. The problem is, since the MCU has to run at 5V, I have to ensure it will get ...
0
votes
0answers
278 views
Arduino Infrared Problem
I just got an Arduino Uno board a few days ago and bought the Parallax IR receiver part # 350-00014 and connected it exactly how it says on this other forum. Now when I get the serial monitor open I ...
8
votes
5answers
2k views
What do I need for a basic RF circuit?
I'm looking for any resource that can help me build a very very basic RC circuit. I'm talking as simple as using RF to turn on/off an LED. The purpose of this circuit is for research and education. If ...
4
votes
1answer
537 views
How to use an ESC
I'm new to RC related modules. Today I got my Hobbywing's Skywalker 20A brushless esc.
Manual is here.
I also have a brushless outrunner motor (HL3512)
I ...
0
votes
1answer
168 views
Can we use PWM on the cheap RX{n}[letter]-TX{n}[letter] Integrated Circuits
The market has been inundated with cheap RC toys. Most of them use the RX/TX Integrated Circuits that have 5 to 9 functions:
PT0090 Series Datasheet
RX2/TX2 Datasheet
All of them operate on an ...
3
votes
2answers
216 views
controlling canon camera
i have a canon EOS 550D and i want to control it from computer. i had good result with taking photos with an ir led, arduino, and multi camera ir control library but i want to control also focus, and, ...
-6
votes
1answer
225 views
RC Plane Solar Panel [closed]
could someone please tell me how to hook up LIGHT WEIGHT solar panels to my RC plane's wing and hook it up to the planes battery? Thanks.
3
votes
1answer
70 views
How do remote access devices work without a cellular connection or internet
This is a sample of one such device i am talking about, i seen a wireless "external hard drive" like electronic at best buy that you can access movies from it without wifi and i have been constantly ...
3
votes
1answer
289 views
Options For Controlling an RC Car
My friend and I are trying to design a remote controlled car and one of the aims is for the controller to be a smartphone. The original idea was, have a transmitter plugged into the audio headphone ...
4
votes
3answers
962 views
Why would an IR remote circuit use one resistor/transistor pair for each LED?
I've done some reverse engineering work on the protcol for a remote that... sucks. I'm replacing it with one of my own design, but while I've improved on the interface, the range and view angle of my ...
3
votes
1answer
246 views
Connecting to external chip (device)
I want to create mobile app that will control some external simple mechanical device. I want to use bada wave s8500 for this purpose so have access to Bluetooth and WI-Fi. Now I'm looking for advice ...
2
votes
4answers
526 views
Arduino: Controlling a RC car remote
I have a Carson Reflex Wheel remote control for my RC car.
It has two potentiometers, one for accelerating and one for steering.
My goal is to control the RC Car from my PC by sending commands via ...
-2
votes
2answers
150 views
I broke my steering coil, where could I get I new one?
I broke this coil:
Does anyone know where I can pick up a similar coil? It was placed in my Nikko RC toy car (Nikko Tiger 2).
5
votes
1answer
303 views
Sending a analogue signal?
I have this old Nikko Tiger 2 RC car I've been playing around with. At first I disassembled it and played around with the parts and my parts (motor controller++).
But then I asked myself, can't I use ...
4
votes
2answers
190 views
Why don't my coil work?
I disassembled my old Niko RC car today. Thought I could play around with the parts.
But what I can't seem to understand is the coil. The powersource of the rc car is a 7.2v NiCd 620mAh battery. And ...
0
votes
2answers
112 views
How do I get this spool to work?
I have this spool (image) and did some testing with a multimeter before I disassembled it. It's working range was [-3.3v,0v,3.3v]. When I tested it by just applying the battery after disassembly ...
2
votes
2answers
544 views
Will this power supply fit my LiPO charger? [closed]
I just got my brand new LiPO battery charger. It is require 12 volt pover supply.
I saw people are using car battery, pc power supply to this charger 12 V. but i'm not sure about current it is ...
0
votes
1answer
202 views
Electric Power Systems for a qudrocoper base on 30amp Speed Controller and NX-4008-620 - NX-4008-620kv Brushless motor
I'm in mood to put together my own quadrocopter. Just before I ordered parts wanted to some experts to tell me if configuration if compatible enough. Or maybe you have better suggestions for this ...
4
votes
3answers
973 views
IR to audio converter (frequency and level)?
What kind of IR detector and converter circuit could be used to down-convert an IR remote signal (in the neighborhood of 35 to 45 kHz) into audio frequency signals (0.1-20 kHz) of the appropriate ...
3
votes
1answer
275 views
BLDC Regenrative ESC and LiPo
I am currently working on a project where I want to implement a Brushless dc motor (like the Turnigy C2226 - 1800kv) to run in-hub of an RC car. I need this entire project to be as lightweight as ...
2
votes
2answers
135 views
Given a source of mechanical input, can an RC motor charge it's own battery without extra cicuitry involved?
Background
I took my RC quadrotor to a windy field this weekend to fly it around. After the battery died, I retrieved it and while carrying it back home, I noticed that the wind was spinning the ...
7
votes
3answers
2k views
How to measure current to a DC motor?
I'm trying to measure current to a DC motor on an RC car I took apart. The car is powered by 3 AA batteries and seems to be made of three different boards. Two of the boards are for switches and LEDs, ...
3
votes
3answers
502 views
tiny RC receiver for bristlebot?
I made a small bristlebot. my version can turn left and right using two vibrators and is controlled by an ATTiny uC. I would like to add remote control functionality so i'm asking what's the simplest ...
2
votes
2answers
3k views
Activating Electronic Speed Control with Arduino
For anyone else looking at this, most of our problems seemed to result from not having the pulse range quite right. We eventually hooked our ESCs up to a standard RC controller and used an ...
2
votes
3answers
304 views
Remote Control Design
I am want to design a remote control. All I need is the appropriate IR LED and the Receiver to use, that will yield optimal performance. i need real practical experience here.
What is the best ...
3
votes
2answers
2k views
Algorithm for mixing 2 axis analog input to control a differential motor drive
I am looking for information about how to implement proper mixing of 2 analog joystick signals (X an Y axis) to control a dual differential motor drive ("tank like" drive) using a uC (ATMega328p in my ...
2
votes
1answer
134 views
R/C BEC with a 12v lead acid
Pretty much all BECs (Battery Eliminator Circuit) are rated to work fine with 12v input but I haven't seen any that mentions lead acid batteries. Almost all datasheets for BEC regulators have write ...
3
votes
1answer
315 views
Cruise control implementation
I am doing a project that requires that I implement a cruise control system on an RC car using a GPS for feedback.
I have implemented PID controllers before, but this is a little bit new to me ...
4
votes
2answers
289 views
Reliability of servos
I am building an RC aircraft, 10kg weight range.
It is supposed to perform long flights (20km+), so reliability is my main concern, mainly on servos controlling Flight control surfaces.
How ...
