12:01am 12-06-2010
and sir if it is possible so also send circuit diagram to it projects.
thank you
11:58pm 12-05-2010
hi sir
i am a diploma student in Gujarat and i wont to make rotating led display on Microcontroller based so it is possible?
if yes so i want to codding of microcontroller.
Replied on: 6:56am 02-05-2011

Sorry, there is no code that was saved for that project.

5:40am 11-25-2010
Replied on: 6:55am 02-05-2011

Good to hear from you.

11:46am 11-23-2010
Charles Pooley
Your rotating display reminded one I designed as a disco effect in 1980. 3 propeller blades with 64 LEDs on each. Made various swirling patterns randomly and synced with sound. Needed a dark room as LEDs then were nothing like today

current obsession Microlaunchers (google that)
8:01pm 11-15-2010
Saroj sahu
Respected Mr. Parekh,
Today I saw your site, I am new in this scenario. I work to popularise science in rural and tribal societies of orissa. I was searching for some DIY projects when I stumbled upon your site. Felt very happy. Can I take some advice on these thing in future. Thanking you Saroj Sahu, PURI, Orissa, India.
Replied on: 6:54am 02-05-2011

Yes you can.

8:13am 10-14-2010
Brendan Conlon
i bought some ocean blue 6000k LEDs from your website. do you still sell them? where do i find them on your website
Replied on: 8:37am 10-15-2010

You can find them in the store (there is a link at the top of the page that will take you there)

Here is the LED category page:


Alan Parekh

5:38am 09-23-2010
Sir ,
THanks for ur very helpful information.Sir i am doing my final year degree project on GPS data logger.
I have U-blox module which gives RMC and GGA output @4800 baud rate.I need this output to stored on SD card in seperate text files which will be named by day information by GPS module.Also i need this same RMC output on another serial port with selectable baud rate from300-152000 with the help of binary switches.
Can you please help me iwth this as it is very urgent for me to complete this project.
Next i want to do is to crosscheck this RMC lattitude and longitude information with pre deifned points and play the name of the place and display that on LED display board.This location information will be also stored on SD card.
Please sir let me know if i need to pay anything for this but it is very necessary for my academic progress.
Replied on: 11:00am 10-07-2010

I would think the best thing for this would be to use an Arduino and some shields. That would get your project along very quickly. Google Sparkfun or Adafruit for these parts.

4:54pm 08-27-2010
Do you have an ETA on when you will have the new version available that will turn the lights on one at a time and off one at a time. Basically the same question Kal asked bvut am wondering on the ETA for this as per I would like to use this system for my basement reno that is on progress right now.
Replied on: 10:58am 10-07-2010

It is now available. There is now an option to select the on one at a time option when ordering the controller.

9:19pm 08-23-2010
Hey Alan! I have be showing my seven year old the inner-workings of many HDD and just about anything broken he can find (supervised). We searched the net for uses for dead HDD and found your projects! Really great site! I cant wait to try to build the HDD clock. Thanks for inspiring both me and my kid!
Replied on: 10:57am 10-07-2010

Glad you enjoyed it!

8:20pm 08-23-2010
Ella Martynovich
Hey alan i was wondering if i can talk to you privatley? i couldn't find your email address, i have a few personal questions i need answers to from a professional.
Replied on: 10:57am 10-07-2010

Sure, my email address is listed here.

2:35pm 08-10-2010
Hi Alan, its nice to see all the positive responses regarding your LED stair lighting system, My question prior to ordering this brilliant product is will it work correctly over in the UK, e.g power output.
your assistance with this would be a great help.
Replied on: 2:50pm 08-17-2010

The system will work fine there. The new power supplies that we have are universal (110V or 240V) but the prongs are the north american style. You could get the power supply locally to power the controller also. Any power supply that outputs between 9 and 12 volts DC and at least 500mA will work fine.

8:51am 07-23-2010
Hello Alan, first of all, awesome projects you have here, keep up the excellent work!

My question is regarding your stair lights. I've watched the demo videos you have on the project page, the one with your cat and such, and I was wondering if it was possible to light the LEDs one at a time at startup just like they turn off one at a time and the end, much like this video here:

Maybe modify the times they turn on, off. Thanks for your response.
Replied on: 6:45pm 08-06-2010

Right now the controller turns off the lights one at a time but turns them on all at once. This feature will be available in the near future since so many people are asking for it.

8:37pm 07-14-2010
Can I get the IR jammer already assembled?
Replied on: 2:07pm 07-21-2010

Sorry, it is only currently available in kit form. It is all through hole though so this would be the best time to learn.

10:57am 06-25-2010

The ecellent video completing the Hard Drive Fan was forwarded to me by John Main

Your video includes VERY important skills to progress a breadboard to a Beta-Prototype. For Newbies, cutting the perf-board, not using electrical tape(glue gun) and strain reliefs are stumbling blocks. You could do well re-posting this as a Bread-board to Real-World 'How to'.

Good and considerate job!!

CaptBry (20yr EE)
Replied on: 2:06pm 07-21-2010

Thanks CaptBry!

11:45am 06-24-2010
HI ,,, im the one who is so amazing with ur peojects . Im so interesting in LED spinning globe and i wanna do it as my term project but i hv to write program on FPGA by using VHDL language . Is it possible to do it ? .. I need your help . Plz give me some advice.

Sincerely, Yokk
Replied on: 2:06pm 07-21-2010

That is definitely possible. I don't work with FPGA's though so I won't be able to help.

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