Questions tagged [remote-control]
For questions related to the remote control of devices and the design of remote controls.
28 questions
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RC circuit as clock source
I am not understanding something very fundamental here , I have read that an RC circuit can be used as a clock source. From this I assume a DC input. Playing around with my oscilloscope the only time ...
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TVS diode before or behind resistor
The best way to protect AVR pin for me is RC filter and TVS diode but I don't know one thing. I've seen schematics where TVS diode was before RC filter like in first schematics.
simulate this ...
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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 ...
- 1,013
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Capacitors and motors
Every RC car I've cannibalized has had a small ceramic capacitor soldered on to the contacts of the motors. What is the purpose of having this? What happens to the performance of the motor with out ...
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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, ...
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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 don't have ...
- 236
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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 ...
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What is the name of the protocol(s) used to let an automatic garage door opener know which button I've pushed on the wall control panel? [closed]
The wired wall control panel in my garage has only 2 wires connected to it.
Yet somehow it acts different when I push the big "door" button than when I push the "light" button or the "lock" button.
...
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Help with or hints for decoding an IR protocol
Some time ago I bought a simple and cheap little IR-controlled toy helicopter (same as this one - it's called "Diamond Gyro" or "Diamond Force"). For fun, I've been looking into controlling it via an ...
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Using an RC delay circuit on an NPN BJT base
I have a limited knowledge about BJTs used as amplifiers, but I know there is a voltage regime where the BJTs amplify, below saturation. I am wondering if I put an RC delay circuit on the BJT's base ...
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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 ...
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Sequence multiple IR remote commands (button presses)
A bit of a story here: I would like to be able to quickly and easily turn on/off captioning on the cable TV box. Normally this would require 10(!) button presses.
It's hard to be sure, but I expect ...
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Relay protection with MOV and RC Snubber
I am going to build a protection circuit for a 240 volt pump motor. It is believed that when the relay cuts out the motor generates voltage back into the relay and burns out the contacts.
It has ...
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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 ...
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How to "push buttons" on voltage ladder?
I have a quite simple task I can't wrap my head around. I have an old home 5.1 sound system with optical input that plays sounds from my media center. Its remote broke, and while I tried to fix it, I ...
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