Questions tagged [remote-control]
For questions related to the remote control of devices and the design of remote controls.
415 questions
0
votes
6
answers
167
views
DIY wired remote control unit design
I need to build a wired remote control unit for a project with 16 switches, where multiple switches will be pressed at the same time. Due to conduit size limitations, I can't have 17 wires running ...
- 83
0
votes
0
answers
89
views
What is this component on an RC crawler car with part number RF3021B?
I am trying to identify a component on a faulty RC crawler car.
It has a marking 'RF3021B', in a SOP16 package, with pin 12 connected to vcc = 3.3 volts from the SOT23 IC beneath it and GND connected ...
- 479
-1
votes
1
answer
311
views
How can I use 433MHz RF Modules and HT12E/HT12D to create a wireless remote control system to control a DC motor?
I would like to create my own battery-powered remote control with 433MHz RF modules using the HT12E and Ht12D encoder and decoder to control the rotation of a DC motor. However, I am not sure of the ...
1
vote
1
answer
357
views
What is the simplest way to build a wireless remote control on/off system?
I started by attempting to use these 433MHz RF modules because they were cheap. However, because of the apparent need to eliminate the random noise generated by the Rx whenever it does not see a ...
0
votes
0
answers
78
views
Identify circuit for ceiling fan
I have a ceiling fan PCB that doesn't respond to the infrared remote controller. The PCB will respond 1 or 2 times over 100 controller clicks (estimation).
I am trying to figure out the circuit so ...
- 11
0
votes
0
answers
105
views
Do RC ESCs use Six Step Squarewave or Six Step PWM control?
I'm trying to understand the differences between the hardware of a simple RC ESC, like the ESC described here, vs the hardware of a motor controller that implements FOC + SVM. This has started with me ...
- 11
1
vote
3
answers
276
views
How does a remote controller know which button was pressed? [closed]
I disassembled one of my remotes to see what's inside, and saw that lines connected to different buttons connect to each other also. Whenever I use buttons in my own circuits, I connect each button to ...
- 881
0
votes
1
answer
113
views
Power calculations verification for a robot project
I am making a robot with the following components:
1 x L298N Motor Driver: https://www.sparkfun.com/datasheets/Robotics/L298_H_Bridge.pdf
2 x 12V DC motors (Medium Power, gear ratio of 74.83:1): ...
- 51
1
vote
0
answers
104
views
311.2 MHz transmitter
I need to build a 311.2 MHz ASK transmitter to interface with a 311.2 MHz remote device. Presumably, given that this is a cheap consumer device, the modulation frequency is not too precise.
Could I ...
- 11
3
votes
2
answers
507
views
RF receiver frizzes when start brushless motor
I'm trying to build a quadcopter with and Arduino, and I'm facing a problem, that is the RF receiver of the quadcopter freezes (not the Arduino) when I turn on the brushless motor.
...
0
votes
1
answer
96
views
Need delay circuit to pull IC pin low for 10 seconds [closed]
For a RF project I use HT12D decoder. I have sensor with digital output. Whenever sensor value changes from low to high or high to low HT12Ds TE pin must be pulled low to enable transmission for 5-10 ...
7
votes
3
answers
1k
views
Unphysical voltage in SPICE simulation
I was exploring a lumped approximation of a distributed RC network (sort of a lossy RC transmission line/ladder network).
Everything made complete sense until I observed the voltage "gain", ...
- 73
0
votes
1
answer
169
views
Trouble understanding resulting bode plot while getting hands on filter design
Recently tried to get hands on filter design, I tried to design à simple low-pass RC filter as shown here.
simulate this circuit – Schematic created using CircuitLab
Cutoff frequency must be \$\...
- 1
0
votes
2
answers
303
views
12 channel remote control: 4-pin IC for 12 buttons: How?
This RF remote control uses ev1527 encoder. Although this IC has just 4 pins for buttons, this remote control has 12 buttons. How they have done such thing?
- 111
0
votes
1
answer
146
views
Can a blown step down module destroy the whole circuit?
I am currently building an Rc car which I designed myself.
Yesterday I started testing the whole system, including four motors (one in each tire), 5 servos (MGN995, 4 ontop the suspention, one ...
- 3