Physical computing

some projects i’ve done in physical computing.

556_organ

This is my toy organ, It was made using half of the 556 timer ic which is just two 555 chips in one. By pressing one of the buttons on the left side of the board you produce a tone which is determined by the values of the capacitors and resistors attached to the button.

multivibrator

This is a multivibrator, the two transistors are wired in such a way that when one is on the other is off. They switch from on to off and back and forth. The leds indicate which transistor is on, in this photo the transistor on the right is on.

monostable_mode

This project uses the 556 chip again. This time i have the 556 running in astable mode, it is outputting a signal that goes from high to low or on to off. The leds in the upper right of the photo are used to help show what the signal is doing, if it were running  one would blink off and one would be on, then they would switch. The speed all depends on the values of capacitors and resistors used.

monostable(really)

Here is the 556 running in monostable mode. That means there’s just one signal coming out of the chip and it stays the same. The led is used here again so that we can see what the chip is doing.

Using Light

lighttovoltage

This is the first of two simple projects/circuits that used light as some type of control. Here is a project where we were given light to voltage converters. The converter is hooked up to the battery, then to the transistor which then outputs a signal that turns on the led. The converter acts like a switch and turns the transistor on and off. This is all dependent on whether light hits the converter or not.

ldr

Here is a similar project. This one uses a ldr or light dependent resistor. The ldr is connected to a transistor which then sends a signal to the led. The brightness of the led is determined by the amount of light that hits the ldr.

here are some links with more about the 556:

http://www.kpsec.freeuk.com/555timer.htm

http://en.wikipedia.org/wiki/555_timer_IC

atari punk console(uses 556/555 timers)

beep it (optical theremin that uses the 555 timer)

18 Responses to “Physical computing”

  1. Keep up the good job man!

  2. Panamena says:

    I am brand-new to blogging and actually enjoyed your website. I am going to bookmark your site and keep checking you out. Thanks for sharing your site.

  3. best casino says:

    Mind if I repost this on my website?

  4. admin says:

    thanks for reading and sure you can repost it on your site, just link back to me that’s all. i know this reply is super late but if you still want to you can repost.

  5. Awesome share! Thank you very much :)

  6. Thanks for write-up, it looks like you got it all figure out, no? Physical computing **** Bryant Davis: D+T **** was a wonderful read.

  7. That is fantastic. Thanks for the link. A great idea for a book!

  8. golf bags says:

    Goodmorning, I was searching for some ideas for the lay out of my new web page and found your site through Bing. I am a manufacturer of golf bags in Tacoma,Washington and a second office in Cairo,Egypt. I want to say excellent work done with the great layout of your website. This has for sure given me some ideas to explore further. Many thanks and I hope to read some more of your posts in the future.

  9. Hi, for some reason when I place your feed into google reader, it won?t work. Can you give me the RSS link just to be sure I?m using the most appropriate one?

  10. Hey, I attempted to email you pertaining to this post but aren?t able to reach you. Please e-mail me when get a moment. Thanks.

  11. Hi, was just browsing through the internet looking for some information and came across your blog. I am impressed by the information that you have on this blog. It shows how well you understand this subject. Bookmarked this page, will come back for more. You, my friend, ROCK!!!

  12. Kim says:

    Thanks so much for sharing all of the excellent content! I am looking forward to seeintg more posts!

  13. Samantha says:

    Very educating post, bookmarked your site in interest to read more!

  14. I usually do not leave comments, but I thought this was a great post! Physical computing **** Bryant Davis: D+T **** was a wonderful read. WoW:)

  15. admin says:

    hi,

    you can email me here technofrosty@yahoo.com, or davib611@newschool.edu.

  16. admin says:

    thanks i will keep posting

  17. admin says:

    i guess i just work my best on things, i don’t really feel like i know everything at all. it’s always a challenge and it’s always exciting to learn new tricks

  18. Once I originally commented I clicked the -Notify me when new comments are added- checkbox and now each time a comment is added I get 4 emails with the same comment. Is there any approach you may take away me from that service? Thanks!

Leave a Reply