Hello Friends,
I am an Electrical and Electronics Engineer student. It
is my first project of this year. As you see, it is my graduation project from
University of Gaziantep, Turkey. In this project I tried to construct a digital
FM receiver with a micro controller. I used 16*2 LCD display, Si4703 FM
receiver, 4*3 keypad and micro-controller Arduino UNO R3.
I met Arduino with this project and I find it is very
easy for programming. I learned too much things from arduino.cc , forums and I
decided to make more project after my first experiment. I used Si4703 digital
FM receiver kit for my project. I think that RBDS could be more attractive on
my project but, I couldn't success to run RBDS. I haven’t found the problem
yet. FM kit has 150mW amplifier but it may not enough to hear some FM station
voices so, I suggest an amplifier, too. Also at soldering process you need to
be quick and careful to not give harm to kit. I had to use another one. Of
course, I bought 2 of them so, I did not need to give another order. Voice is
clear enough but, Kit can’t find quickly to another FM station. You have to
push button more times to catch strong signal while scanning. Overall it has
good performance. I used 16*2 LCD display to show current frequency, Sound
quality; Mono or Stereo, current station is favorite or not (in quick button
memory or not) , Voice level; 0 to 15 (min-max). By using 4*3 keypad, you can
scan signals by 0.1 MHz (buttons 4,7) or jump to the other strong signal (up or
down; buttons 5,8). Also you can use mute button (6) to voice off directly and
can be listen again by same button to voice up to the last voice level. Also
you can use voice up and down buttons for preferred voice level. For setting, you
have to enter submenu by 9 and increase sound # and decrease sound level by *
and to quit submenu, you have to use 0. And I used 3 direct memory buttons (1,2,3)
to tune on FM stations to listen directly. Also you can change this favorite FM
stations by using 0.
I tried to have same functions as
normal digital FM radio on my FM receiver. Except RBDS, I succeed all. Also I
prepared a video on youtube. You can see it by there http://www.youtube.com/watch?v=G3NxUwJzl24
. I
added a subtitle in English to more help to you. I hope it will help you, too.
