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12:50pm 04-04-2012
Hi Alan.i'm trying to built hdd clock but i have a problem. i program the pic (PIC16F628A) i connect everything in the circuit exept the beam sensor.when i turn it on the leds are on all the time and nothing happents,like i give 5 volts only in the leds.i think i did everthing right .any suggestions?

Sorry for bad english.
Replied on: 1:14pm 09-27-2012

You might want to connect the beam sensor and see if it starts to work.

12:09pm 04-03-2012
george s lavra
Great! Just starting to work w/cell phone display. Good info and resources.
Replied on: 1:17pm 09-27-2012


1:57pm 04-01-2012
Rogerio Francisco
Hi Alan, could you help me with 16f727 touch, i´m trying to do a circuito with 16 touch buttons and 16 leds. please.
Replied on: 12:54pm 09-27-2012

A sensor chip like this might work well for you.

2:42am 02-12-2012
Bagus Lemarki
Hi Alan, can you help me, i looking for the Fireball V90 CNC Router Assembly. I saw your article at about that. can you tell me how about the Fireball, would you show me the spec, anda about the price, if i buy one of them, can buy the spare part, because i want make it to education on my country. Thanks before. Sincerly Bagus
Replied on: 5:19am 02-12-2012

The CNC machine is lots of fun. You can see the company who makes it here.

3:07am 01-24-2012
hi alan we are working on single column rotating LED display .can i know what type of Led do we need to use . i need to know the specifications of the LED .
Replied on: 9:11pm 02-04-2012

Hi Findo,

You can use normal 5mm ones like the ones that we sell.

10:12pm 01-12-2012
HI Alan, my son put together the gear clock christmas present last night. It only took him 3 hours to solder the board and assemble the clock. He plugged it in and its keeping time perfect. Not bad for a first time soldering on a board being only 12 years old. I'm so proud of him. It looks great. Or, in his words, "its ethic". I think he is hooked

Replied on: 9:12pm 02-04-2012

Looks great Noel. Thanks for sharing it.

4:45pm 01-01-2012
Excellent...I have seen the videos about the HD fans and I think its a great idea. Very cleaver indeed. I would love to know everything about electronics but I think there's too much to learn and I don't have a so good memory. Hats for all those people who have creativity and knowledge to reach their goals and build all kinds of things / gadgets. Rick
Replied on: 9:14pm 02-04-2012

Hi Rick,

Just start small and learn from there.

8:55am 12-21-2011
Great site, especially for a novice like me. I have worked with accerometers and high speed data acquisition systems in the field of vibration test and analysis, however the world of micro controllers is a new one for me and I find it fascinating.
I would like to get a copy of the program code for the "3-5v LED CHASER" project. This is the best chaser project I have found, and I've looked around a lot. Also I have plenty of the PIC16f628 chips and other components. I wanted to build the project to entertain the grandchildren. Thanks for your site, I will return often. Bill
Replied on: 9:16pm 02-04-2012

Hi Bill,

Sounds like this project was one featured on Hacked Gadgets, there should be a link in the article with more info.

5:09pm 10-10-2011
Hi my name is Hristo im currently attempting to build your plasma speaker deseighn posted on i can see how it works but i realy need a better explantion on what the transformer you used is it says 6-8turns on a ferrite core but at what voltage could you please send me the specs of that transformer
Replied on: 9:15pm 02-04-2012

Hi Hristo,

That was actually just featured on Hacked Gadgets, there should be a link in the article with additional information.

1:00am 10-02-2011
Hi Alan
What is the difference between your Stair light V1.0 and V1.3

Thanks & Regards
Replied on: 12:26am 10-10-2011

Hi Saga,

The current versions is V1.3 and V1.4. When purchasing the controller select the operating style at the bottom of the page.

1:05pm 09-30-2011
Gerri Acorn
Hi Alan, it was terrific seeing the article in the Free Press last weekend. Could you contact me at the email address above when you have a sec?


Replied on: 12:29am 10-10-2011

Good to hear from you Gerri.

7:22am 09-27-2011
Johann Uys
Hi Alan

Well done this encoder works like a charm and has a 1000 uses.

Simpler you cannot get.
Replied on: 12:28am 10-10-2011

Thanks for the feedback Johann!

7:21am 09-21-2011
i wanted to build an automated device for my project using the parts of a cd drive. can i use the same circuit to program the automation? wat i mean is can i change the program of the cd drive? im a mechanical engineer and i dont know much about programming. please help.
Replied on: 12:28am 10-10-2011

No you would not be able to change the CD-ROM firmware, you will need to add a custom microcontroller to add the functionality you need.

4:15pm 09-09-2011
Thank you
Replied on: 12:28am 09-16-2011

No problem.

5:29pm 08-27-2011
Hi Alan
I would like to buy your staircase light project kit. However, i can mount IR on one side of the not on the other. Instead of breaking the beam, Is it possible to use the PIR motion sensor with some modifications.

Replied on: 12:34am 09-16-2011

Hi Saga,

Yes, the stair lighting kit can work with dry contact devices such as motion sensors and under carpet pressure sensors. Please see page 35 of the manual for details.

You will need two additional resistors which can be found here

The beam needs to be mounted on opposite sides of the stairwell to work properly.

If you are looking for a system with more features please have a look at the Reactive Lighting system.

Messages: 61 until 75 of 382.
Number of pages: 26
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