Blog about My Life, Open Hardware, Free Software
My name is Jeffrey (24), an Electronics Engineer from Thrissur, Kerala. I'm a Free Software and Open Hardware enthusiast.
This is my personal blog where I would like to post my daily life experiences. I also post my technical works over here. I like sharing my technical experiences more.
I love to talk and write a lot. These are some of my Articles and Talks which I have done http://jeffrey.co.in/articles_talks.html
You can contact me at
admin says:
Ya I remember you. Hope you are going fine. I am not actually his student i.e I am not going for any classes over there. I know him. We are in the FSUG Thrissur group. Also I consult him if there is any doubts.
I dont think there are any students who loves GNU/Linux in Jyothi Engineering College. There are some students from ECE who are my juniors interested in FOSS. No one fron CSE !!!!
Any way pramode sir has a good impression on JECC.
Keep updating your blog. I am a regular reader.
What are you doing now?
Sreejith K says:
I’m now preparing to write GATE. Also planning to join with Pramode sir in FOSSTRONICS.
Keep updating your blog. I am a regular reader.
What are you doing now?
VISHNUDUTT.T.N. says:
i have a query…. where in this site can i post??????
admin says:
If it is a common doubt you may post it on this page itself or you may mail it too me at my e-mail address.
If it is something that is related to a blog post, you may post your doubt on that blog post… 
എന്താടാ സംശയം ?
VISHNUDUTT.T.N. says:
hi hi
how to configure internet in openSUSE 11.1????
troubles in using YaST2….. tell me in detail
admin says:
Hi Vishnu..
Sorry I don’t have the answer. But you can get it from our Free Software User Group, Thrissur.
Just visit this link…
http://lists.fsugtsr.org/mailman/listinfo/discuss
Join this mailing list and post your question over there. A lot of members will be viewing your question and I am sure you will get the answer….
HAPPY GNU/Linuxing
Hari K T says:
Wow …….
so u from Jyothi Engineering ….. Good 2 c u guys maintaining ur Blogs .
Wish u all the best ..
DEVANAND says:
Jeff nice to find in this world.
adire says:
Can’t wait to have a look at this release, sounds like an amazing project. Please let me know when it’s ready and online.
admin says:
Its not an project. Its a USB board that I have bought from the local market. As I have bought the board, I don’t have the circuit diagram with me. Its a USB MP3 player board from china.
sudhi says:
hai jeffrey,
Happy see your blog,i have some doubt regarding your usb mp player,i am a computer engineer.so hows it work .can i buy this board from market.whats will be the cost .whats the name of the board and configuration. pleasegive me a reply.anyhow its fantastic.i am going do a business in the same field thats why i asked.,
sudheesh
9944146173
Nabeel says:
hai jeff nabeel here from perinthalmanna iam in need of that usb mp3 player diagram can u pls send it
arun says:
can you sent me the circuit diagram of the usb player board.I need if as a part of my project
prakash H says:
Hi,
I am a PCB designer. i saw your open source gEDA tool for PCB design. I have some Queries regarding the tool.could u give me your cell number. sothat i can call you.
Prakash H
Fritze George says:
Hello,
I am a student of Govt. Engineering College, Trichur. I have to do a mini project for my sixth semester. You might be knowing these stuffs right. I was planning to make a mp3 player fm transmitter. When i searched for it on net, I came through your blog regarding a USB player you bought from a Shop in Thrissur. It would be Great help if you give me the details of that shop. Quite frankly I would also ask you to suggest me a few topics for my project work.
Thanking You.
admin says:
@Fritze George :
In thrissur there is a road named POST OFFICE ROAD. There are several shops over there who sells these kits. You can buy from there.
Vinod says:
I bought ‘SAMCON MP3 USB FM Circuit with Remote’ board from kerala electroncs at trichur but the connections seem to be different from the one that you have mentioned in your blog. It comes with one board, three set of wires with connectors attached at one end. Please help me to understand the given below codings on board connectors. Plz also tell me what are the other componets should I buy to complete the circuit.
Connector-1
5V
IR
GND
PLAY
VOL-
PMCH
VOL+
R
GND
L
Connector-2
GND
DP
DM
5V
Connector-3
CS
DATA
CMD
CLK
DET
3.3V
GND
GND
5V
LABEEB says:
hey jeff m labeeb …..
gud to see ur portal……..
i too hav some queries .. want to get familiarized with AVR UC’s
Can you give me some tips
like which IDE i shoud use, how can i download the program in to the UC flash memory like detals…….
do reply …………..
admin says:
@LABEEB:
You have a good forum named as avr freaks. Google that term to find more. No IDE’s are available in my knowledge. We have avr gcc for compiling. For more details check
http://jeffrey.co.in/wiki/doku.php?id=program_atmega_micro_controllers_in_gnu_linux
admin says:
@Vinod:
I will explain the pin details
Connector-1
5V – power for ir sensor TSOP1738
IR – IR data line of TSOP1738
GND – Ground of TSOP1738
PLAY – switch connection for play
VOL- – switch connection for vol –
PMCH – switch connection for mode(Radio/USB)
VOL+ – switch connection for vol +
R – Right channel output to audio amp
GND – ground
L – Left channel output to audio amp
Connector-2
GND – USB Ground
DP – USB DATA +
DM – USB DATA -
5V – USB 5V
Connector-3 (For SD card connection. I dont know about SD cards)
CS
DATA
CMD
CLK
DET
3.3V
GND
GND – GROUND
5V – Regulated 5V supply from 7805 IC
SALEEM P says:
Hi Jeffrey, send me ur project details abt SLOS
Tejus says:
Hi,
I am from Bangalore. I was working on Daisy mp3 player but couldn’t find:
1. PIC18F45j10-I/P (40 pin)
2. VS1011E-S
Then I came across your blog and was quite amazed by the USB mp3 Board. I had been to Modern Electronics,SP Road, Bangalore today. I got the same kit for Rs. 170.
Please send me a detailed connection diagram. (I am a novice)
I somehow managed to connect. The problem is that the output sound quality is not good when I use headphones. But when connected to a woofer, the sound is just soooooo fantastic and so much clear. May be I should make use of the transistor given and also a few capacitors and resistors so that the sound is amplified and filtered appropriately. Where do I connect the transistor and capacitors? I am waiting for your reply. Please reply back.
Also let me know about the availability of the the two components mentioned above in India.(In case you know)
Thanks!
-TEJUS
nidheesh says:
am frm ijk
had problem am buy a VIRE USB PLAYER WITH fm and remote i have 3 set of wire plz help me about pmch what is vcc ? Other outs and Ri value (3.3v) This circut L,C,R,V+,PMCH,V-,P,G,RI,3.3v
MOHIT says:
Hi sir,
i am very much interseted in the usb mp3 player.what all components should i buy.and what is the connection diagram.please help me..
nithin says:
i am intersted the USB player.what is this brand where this buy, what is the connection diagram plz help me…………
Yusufkhan says:
hi
plz say me which conectionis for pin for IR sensor
count clockwise or anti clockwise
and about IR pin conection
damanjit singh says:
hello please tell me how to make usb mp3 player
for free
i am waiting for your reply
please please please
Anil Joby says:
Hai Please Say
Whether it can buy only from thrissur
I am at Ernakulam.
Please say the name of the shop where it can buy.
Does it is available in Thomson Electronics, Ernakulam
krishna says:
hai sir,
When i searched through the net i found your blog very interesting.i want to do a project on mp3 protocol.something like a hardware hand held device to edit ongoing music.can you help me on this topic which hardware platform you prefer ?
Ramkumar says:
Dear Sir,
Greetings.
This is ramkumar; i am very happy to see you article and interest
actually me a web designer also interested in electronics
last time i purchased one china mp3 usb board and i connected as per the electronic shop person instruction
its working but the sound is not in clear its give sum humming
i have one doubt on this;
actually where i connect the audio left | right | ground connection on the amplifier
may i use the volume control line for that. is it audio line know? then where is ground
kindly help me to do
thanks,
ramkumar.s
Jeffrey says:
Ramkumar: You can connect it to the audio amplifier. Just give a search to find the diagram of headphone pin (which usually audio amplifiers will be using as input connectors)
Vijendra says:
Hi Jeffrey,
When i searched through the net i found your blog which is very interesting. I worked on the mp3 Player project and it worked very fine. thanks for the information provided.
Now i want to make USB Portable HDD + Media player which i can connect to TV as well as Monitor please let me know if any kit is available for that or what components i may need.
Thanks.
Vijendra.
Ulysses Nayman says:
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sam says:
i came across a vire board VTF 109C V1.0 (usb/mp3/aux). Aux connector is having a pin marked ‘Linedat’ in addition to line R/L/Gnd. What is it? How to connect an aux input to this board so that we can use all 3 options ie. USB, MP3 & Aux.
xtb
Hello Jeffrey,
Remember me ? I’m Sreejith of CSE senior batch.
Good to see you in the mood of innovation and experiments. Are there any students left in JECC who are interested in FOSS ?
This is a nice blog you are maintaining. Congratulations….
Are you (now) a student of Pramode sir ? He always says about the JECC batch but have’nt heard of you
What’s your main project ?
January 3, 2009 at 4:56 AM