For questions related to the remote control of devices and the design of remote controls.
0
votes
2answers
82 views
Making my own 38kHz remote
The issue I am having is it appears many modern remotes don't have a 38kHz carrier frequency for the infrared signal. I would get inconsistent readings using an TSOP 1738. Since the remotes you can ...
0
votes
0answers
34 views
Quadrotor experimental identification [on hold]
I want to model the quadrotor using experimental method "I have not built it yet"
what I want to do is:
Turn only one motor at a specific speed ,then plot the x,y,z and the angles then identify the ...
-1
votes
0answers
38 views
How to make IR amplifier? [closed]
I want to keep this as simple as possible. I have unused IR LEDs lying around, now I want to get the input signal from a TV remote IR LED just by hooking up a wire directly from it and use it as ...
2
votes
1answer
49 views
Choosing voltage regulator and battery for a compact RF remote control (transmitter)
I'm designing a remote control based on a TWS-DS-6 433.92MHz transmitter and I wanted it to be really compact and energy efficient.
I plan to have an ATtiny85 controlling the transmitter and use ...
1
vote
4answers
91 views
Increasing voltage to motors
I'm got a RC car, which can go forward and backward and it's supplied by ~5V battery. At this moment the circuit looks like this:
and the board can swap ...
0
votes
0answers
44 views
Relay/TRIAC for water heater switching
I'm designing a remote controlled switch for my water heater and I am bothered by the following questions:
Should the switch be DPST, or can I just switch the phase line (dangerous?) ? can I do it ...
2
votes
1answer
43 views
Can I use this Anker Astro 3e to power my arduino through the usb?
http://www.amazon.com/gp/product/B009USAJCC/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1
Will there be any electrical problems? I'm building a arduino controlled car (with a chassis like this:
...
1
vote
1answer
82 views
Increase the range of RC controller
I got a old RC car + controller, I would like to increase it's range. I did a research and I found a idea here. The idea states:
Here's what you do. Parts: one (1) NPN transistor. Tools: Soldering
...
0
votes
1answer
82 views
Using 27MHz car with 49MHz remote control
I managed to do something like this guy here, but after I connected the Arduino to the 49MHz remote control, I figured out that I have another car which works on ...
1
vote
1answer
64 views
Connecting RC remote to Arduino
I found a old RC Car. I'm electronic begginer, so my question might be dump, but I can't figure out how I can do this. I Separated the remote and connected it's power to the Arduino board.
At this ...
2
votes
1answer
88 views
Cause of difference in theoretical and experimental values of RC time constants
What accounts for the slight difference in the theoretical and experimental values of the time constant in a simple RC filter?
The slight difference was just (.5*10^-4) seconds
0
votes
1answer
63 views
Isolated closing contact other than relay?
I need an isolated closing contact, like a relay, but ideally solid state. Rating 24V 100 mA on the contact side would be plenty. 1 kHz operation would be enough as well. I will drive this from 5V 25 ...
0
votes
0answers
65 views
RC Helicopter Engine Spec
I try to build a quad copter. First of all. I do know that there are very viable prebuild solutions out there but part (ok maybe a very big part) of the fun is to construct/program the thing.
The ...
0
votes
1answer
75 views
Remote Control Circuit
I tried to build a kind of R/C catamaran working with computer fans using an R/C car circuit (27 MHz). The original circuit uses 6V batteries but the fans uses 12V. To make the fans faster, I've given ...
1
vote
3answers
133 views
variable-speed focus PTZ protocol
I'm building camera systems to mount on top of a TV tower.
When storm clouds roll, in the video is displayed on the TV weather report.
No one wants to climb the tower to manually pan and tilt and zoom ...
-2
votes
2answers
89 views
Is there a device to automatically disconnect network or otherwise time limit a physical connection to a network [closed]
Is there a device to automatically disconnect network or otherwise time limit a physical connection to a network? The why? We are dealing with a production outage of large industrial equipment. The ...
1
vote
1answer
82 views
Connecting Arduino to a Monster iEZClick Remote
Hey all i am looking to do a project with an Monster iEZClick Remote Control using an Arduino Pro Mini 328.
The Monster iEZClick Remote Control is an RF remote that transmits to an ipod socket ...
5
votes
3answers
222 views
Recommendation for ADC noise filtering?
I'm using an ADC (adc081c021) with a pretty noisy input:
There is also a 5-second video here:
http://tinypic.com/player.php?v=2ue47cm&s=5
The objective is to detect the two peaks. How could I ...
-1
votes
2answers
91 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 ...
2
votes
2answers
162 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 ...
-3
votes
1answer
106 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
118 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
938 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
142 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
162 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
268 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
250 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 ...
2
votes
1answer
258 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
61 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
97 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
1k 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
163 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
227 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):
...
4
votes
1answer
978 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
465 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
619 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
137 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
161 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
349 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 ...
12
votes
6answers
4k 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
818 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
198 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
299 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, ...
3
votes
1answer
75 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 ...
4
votes
1answer
337 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 ...
5
votes
3answers
2k 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
303 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
653 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
177 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
424 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 ...
