Online Electronic component selling sites in India

I am giving below the list of various sites I came across selling electronic components in India.

1. http://thinklabs.in/ --- more of a training institute
2. http://www.rkelectro.com
3. http://www.digikey.in/
4. http://www.singodia.com/  --- bulk selling
5. http://www.onlinetps.com/ --- looks cost effective, comparatively more items
6. http://www.nex-robotics.com/ --- looks like the second best
7. http://aplusindia.net --- voice, melody ICs
8. http://www.discoverprojects.com
9. http://www.sunrom.com/ - more items but comparatively priced higher 
10. http://www.nskelectronics.in   ---  looks cost effective
11. http://www.bhasha.co.cc/
12. http://www.simplelabs.co.in/
13. http://www.rhydolabz.com/   ---- feel costly
14. http://9circuits.com/products/   ---- minimum
15. http://www.pearllabs.com/ --- nothing
16. http://www.catsystems.in/   --- minimum
17. http://www.embeddedmarket.com/  --- feel costly
18. http://www.tenettech.com  --- feel costly
19. http://feemo.in/    --- few items
20. http://www.thinnkware.com --- few items interesting
21. http://www.metalmateinc.com --- interesting robots – robots only
22. http://www.probots.co.in/ ---- ok, making PCB also, more items, cost effective
23. http://www.kitsnspares.com --- minimum interesting, but you can take part no from  element14 and order here
24. http://www.tenettech.com
25. http://shop.extremeelectronics.co.in
26. http://www.dnatechindia.com – some project boards
27. http://www.protocentral.com/ - Arduino, robotic related
28. http://shop.sumeetinstruments.com/ - Arduino, robotic related
29. http://www.hobby2go.com - more variety of items, price seems to be ok
30. http://www.ventor.co.in - Contributed by SR
31. http://www.elevogue.com/ - Contributed by Nilesh
32. http://www.digibay.in/ - Limited items, reasonable price
33. http://www.mgsuperlabs.co.in/estore - Contributed by Sneha Agrawal on July 17, 2013
34. http://www.electroncomponents.com/  - Contributed by soon on July 24, 2013
35. http://estore.digxtech.com/ - Contributed by Shamnad by on August 23, 2013, reasonable collection and cost, based in Cochin
36. http://www.roboshop.in/ - Contributed by Nik Smith in Nov 2013, based in Noida
37. http://www.technofreek.com/ - Limited items, reasonable price, based in Bangalore, contributed by Tech DIY in Nov 2013
38. www.sonlineshop.com - Reasonable collection & price, based in Coimbatore, contributed by Sampath in Dec 2013
39. http://hacktronics.co.in/ - Comparatively more items, based in Bangalore, contributed by Priyank Bolia in Jan 2014
40. www.frugal-labs.com - Limited items, based in Bangalore, contributed by Sreowshi in Mar 2014
41. www.evelta.com - Limited items, based in Mumbai, added in Jul 2014
42. www.anandtronics.com - Limited items, based in Chennai, added in Jul 2014
43. www.componentsindia.com - Limited items, added in Jul 2014

Last updated on 29th July 2014

Disclaimer: Comments are based on my observation. Not intended to merit or demerit any specific site.

Request to visitors of this page : Please update only electronic component selling sites, no computer hardware, training institutes, generic online selling sites. Please update if any of the above link is not working or currently not available.

Hobbyist dream comes true - Oscilloscope Uni-T

What is hobbyist dream? From my point of view, owning an Oscilloscope!! How long you will guess after you make something and finding it not working as intended. You start guessing and keep changing components or the software code.

A friend of mine who went to China on official work found Oscilloscopes at lesser price compared to stalwarts like Agilent, Tektronix Fluke, Yogokawa etc... They are brands like Rigol, ATTEN, Owen, Uni-T etc

Finally I got one Uni-T 100Mhz DSO for US$ 250 (yes in Indian Rupees it is around 14K) in China through him (thus escaping the uncertainty of ordering online/breakage during transit/import duties etc). I will keep sharing my experience with this scope as I play with it. (Yes, my wife is already asking "to blink a LED why Oscilloscope is required?" - Soon I will try to complete atleast few of my hobby projects fully prove??)

Picture

Build quality & Aesthetics

1. Build quality ok, only thing is power switch is on the top and AC power inlet is in the left side. May not be convening to operate or keep it inside a rack kind of place.
2. Control button looks like may not withstand rough handling.
3. Probes seems to be having very thin insulation.
4. Single Y control for both the channel seems to be a bit of inconvenience.

USB IO Controller based on PIC18F2550

I wanted a IO controller which should able to connect to a PC and control various external things using PC. What better interface to consider other than USB.

Once USB interface was selected, I wanted a simple uC using which a hobbyist can program, solder etc. Nothing fit my search other than PIC18F2550 - DIP package, 28 pin, ample memory, wide source code availability etc.

Once I selected uC, I wanted it like a command processing engine. All I have to do is send command to it from PC and uC will act on the command. Not only that, it has read / collect / process data from external world and send it to PC.

Having planned this, shall start reinventing the wheel? No... I started searching over internet to find something similar. I found something which close to my wish... It is UBW (USB Bit Whacker).

I wanted build from it and here goes my progress

Step 1 - Make the hardware in general purpose PCB

Step 2 - Make a command reference manual
             https://docs.google.com/folder/d/0B3RqTvW97MV9eXJETW9aY0RTaXM/edit
           
            https://github.com/MohanRenganathan/USB-IO-Controller