All Questions
27 questions
-1
votes
1
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181
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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 ...
0
votes
0
answers
46
views
Linking the PT2262 and PT2272 ICs by either normal laser light or four infrared channels
Can the PT2262 and PT2272 ICs be linked together by normal or infrared laser light, or are they only designed for wireless communication?
If they can be, what is the way to do this?
0
votes
0
answers
134
views
24VAC Binary Encoder / Decoder for Sprinkler System
I have a typical sprinkler system that runs on 24VAC.
My sprinkler controller is in my garage and my sprinkler valves are across the yard with a cable running underground with 5 wires. One wire is the ...
- 111
1
vote
2
answers
505
views
Reading angular velocity from multiple rotary encoders
I am working on a project, where I need to get reliable data from 4 incremental rotary encoders. The motors can spin at a maximum of 100 RPM, with 420 pulses per revolution. This makes a single ...
- 93
0
votes
0
answers
84
views
Wireless real-time control of RGB led strip using PWM and RF
I would like to send three 8-bit PWM values (generated using an ESP32 and the ledc library) wirelessly in real-time.
From what I've come across, RF seems like a good option, however I would prefer not ...
- 1
1
vote
1
answer
75
views
computation bit error as sum(abs)
I am working on a realisation the convolutional encoder/decoder with constraint length K=7. Encoder and decoder were implemented and currently I am testing these functions
My test file looks like:
<...
- 265
0
votes
1
answer
335
views
Why doesn't this circuit simulation work?
I am trying to build a circuit using only encoders and decoders. This circuit will output the 1’s complement of 3 bit number. (For example: If I give it 010 it will give output 101.)
I used a ...
- 29
2
votes
1
answer
697
views
Help identifying encoding scheme for RF device
I have this RF encoder that I am trying to customize with an MCU. The remote control device uses an encoder called HS2260. I believe it is a clone of PT2262 device. I was able to get the waveform but ...
- 101
1
vote
2
answers
507
views
Encoder direction change during index pulse
I have a quadrature encoder with an index pulse, and I would like to keep track of angular position over multiple turns. The microcontroller I am using has counters that count both index pulses (...
- 163
0
votes
1
answer
212
views
Dynamically setting address of HT12E with Raspberry Pi
I have a project where I need to send a wireless signal to one of several receivers to turn on an LED.
One transmitter, several (many) receivers, each with an LED.
The receivers need to have low ...
- 101
0
votes
2
answers
1k
views
AD725: is it dot crawl - and what to do about it?
Device's datasheet says
One well known distortion of composite video images is called dot crawl. It shows up as a moving dot pattern at the interface between two areas of different color. It is ...
- 7,254
0
votes
1
answer
711
views
How to make my own sequence of numbers and letters in a seven segment display circuit? [closed]
In this circuit, I have connected a single switch to a priority encoder, which is then connected to some inverters, further connected to a binary decoder, then to some current limiting resistor which ...
- 81
2
votes
2
answers
6k
views
Implementing a function using decoder, encoder and some gates
Implement the function F(A,B,C,D,E) = A’B’C’DE’+ABCD’E using only the components required from the ones given below:
One 3:8 decoder with active high outputs and an active high enable input
One 8:3 ...
- 23
-3
votes
1
answer
213
views
Tail biting convolution encoder
I understand how encoders and decoders work, but what are theses values?
- 99
1
vote
2
answers
1k
views
How to connect two FPGA boards - VHDL
(source: isabekov.pro)
Hi all,
I am trying to figure out a way to connect two fpga boards (like in the image) for a Morse code decoder/encoder. Our first plan was to make the decoding and the encoding ...
- 11