How to decode and transmit a 315 MHz signal from a remote?
I have attached a PDF that has the text and pictures together.
I have a remote that has an AUX R315A transmitter on a GV-CDT01 board. There is also an IC ABVO MC96F633D 1319 Korea. The antenna is 7mm long. The voltage is 2 AAA batteries.
I captured the signal from the transmitter by connecting the data pin to line in on a sound card using a 3.5 mm jack. Below is the captured signal. The remote requires a key press to activate the remote and then I pressed the power button 3 times.
I found the FCC information and below is what I think is all of the detail I need.
Frequency = 315 MHz
Transmit only control signal = yes
Deactivates in 5 seconds
Duty Cycle = .357225434
Duration of Pulse train = 17.3 mSec
Large pulse width = .42 mSec
Small pulse width = .15 mSec
Below is one of the signals expanded out.
I have tried to replay this out of the sound card into a 315 MHz transmitter with no success. I took the 3.5 mm jack and ground went to ground and the tip of the jack went to data pin on the transmitter. I used 3 volts to power the transmitter. The transmitter I used is WRL-10535 from SparkFun. I then tried to use this transmitter with an Arduino and code and no success there either.
I have expanded this out even more and I used the following to come up with a code. The long (wide) is a 0 and the short (narrow) is a 1.
011111111110010110011110101011011011111111111111101010110
I count 57 bits. I tried using several code examples and have had no success in getting the device to turn on with this transmission. I tried following the tutorials of Arduino Basics 433 MHz RF module with Arduino Tutorial 1-4. I used 315 MHz equipment instead of the 433 MHz in the tutorial.
Please let me know what I am doing incorrectly and if it is possible for me to duplicate this so I may control the device with the Arduino and a 315 MHz transmitter.
How to decode and transmit a 315 mhz signal from a remote.pdf (134 KB)