Computer Controlled Transmitter - Hig... Science Toys | Science Blog | Log Out | Topics | Search
My Toys | Energy | Moderators | Register | Edit Profile

Scitoys Message Board » I am having trouble building one of the toys » Computer Controlled Transmitter - High/Low giving rapid beeps « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Alvin Lee (Abcinventor)
Member
Username: Abcinventor

Post Number: 19
Registered: 9-2005
Posted on Saturday, March 29, 2008 - 11:18 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

I was building the computer controlled transmitter last night and it worked! (in
just one try)
I tried using different modes; fast, slow, high & low tone, CW and invert and
they gave no problems.

The next day, I tried playing with it again but instead of giving dots and slashes
, it gave out rapid beeps- slashes giving a longer duration of the beeps while
dots are shorter in duration. I tried to use the CW mode and it worked fine.

I checked and rechecked everything and there seemed to be no problems in any
connections.

Can someone please help me out with this?
I found someone else who may have the same problem as me:
http://scitoys.com/board/messages/7/98.html (post by David L. Rice)
Thanks!
Top of pagePrevious messageNext messageBottom of page Link to this message

Alvin Lee (Abcinventor)
Member
Username: Abcinventor

Post Number: 20
Registered: 9-2005
Posted on Sunday, March 30, 2008 - 11:22 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

After another try tonight(which is after I try it on another 2 computers),
it finally worked with one of the computers deemed 'failure'.

At first it gave the buzz and rapid flashes on the LED but after leaving it
on for another 2 minutes, it changed to the organised beeps and flashes again.

I checked the circuit again, trying to figure out what made it right but I
found nothing.
Top of pagePrevious messageNext messageBottom of page Link to this message

Alvin Lee (Abcinventor)
Intermediate Member
Username: Abcinventor

Post Number: 21
Registered: 9-2005
Posted on Monday, March 31, 2008 - 1:18 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

... and I tried making it worked again.... but.. it failed... again...
It's really about luck I guess....

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action:
For those who have trouble spelling, the Google Toolbar (included in the Google Pack) can check and correct the spelling in your posts on this message board and others.

Renewable Energy

Topics | Last Day | Last Week | Tree View | Search | Help/Instructions | Program Credits Administration