Hello,
I am very very new to soldering and kit building, before tackling the monochron I have only built the TV-B-Gone. I have been following the monochron instructions and everything has gone fine up until soldering the switch and LED. At that point when I plug it in I hear the beeps, but the LED will not turn on no matter what position the switch is in. I have posted pictures of my work so far, any help would be greatly appreciated.
Thank you,
Aric
monochron fails LED + switch test
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: monochron fails LED + switch test
Difficult to see the solders on the IC socket because of the flash, but quite a few of the pins look solder-starved. Solders should look like this:Guide To Excellent Soldering
. Try retouching any pins that look a little light. You might also review our -
- Posts: 6
- Joined: Thu Sep 27, 2012 1:55 pm
Re: monochron fails LED + switch test
Hello, and thank you for help! It was a while before I had time to work on this again, thus the slow reply. I have reviewed that soldering tutorial and have resoldered not just the socket, but also the other components and my problem continues. I have triple/quadruple checked that the placement of the soldered components but the problem persists. I have also replaced the LED. Is there some way I might narrow down my problem?
Thank you again for your help.
-Aric
Thank you again for your help.
-Aric
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: monochron fails LED + switch test
Could be a bad switch. Do you have a voltmeter/multimeter? Referring to the picture below:
- you should always see 5V between the pads labeled "+5V" and "GND".
- with the switch in the position shown:
- you should have continuity between "GND" and "switched GND/NC"
- you should see 5V between "+5V" and "switched GND/NC"
- with the switch in the opposite position:
- you should have continuity between "NC" and "switched GND/NC"
- you should see 0V between "+5V" and "switched GND/NC"
- you should always see 5V between the pads labeled "+5V" and "GND".
- with the switch in the position shown:
- you should have continuity between "GND" and "switched GND/NC"
- you should see 5V between "+5V" and "switched GND/NC"
- with the switch in the opposite position:
- you should have continuity between "NC" and "switched GND/NC"
- you should see 0V between "+5V" and "switched GND/NC"
-
- Posts: 6
- Joined: Thu Sep 27, 2012 1:55 pm
Re: monochron fails LED + switch test
Hello,
Thank you so much for your help, and thank you for keeping the kids gloves on!
I'm not sure what to make of this but here is what I observed:
I only ever saw 0 volts between +5V and GND, no matter the position of the switch. I touched up the solder a bit, but still never saw anything between them.
Switch in position shown:
-0 between GND and switched GND/NC
5.08V between +5V and switched GND/NC
Opposite position:
-0 between NC and switched GND/NC
0.4 (fluctuated) between +5V and switched GND/NC
Thank you again for your help.
Thank you so much for your help, and thank you for keeping the kids gloves on!
I'm not sure what to make of this but here is what I observed:
I only ever saw 0 volts between +5V and GND, no matter the position of the switch. I touched up the solder a bit, but still never saw anything between them.
Switch in position shown:
-0 between GND and switched GND/NC
5.08V between +5V and switched GND/NC
Opposite position:
-0 between NC and switched GND/NC
0.4 (fluctuated) between +5V and switched GND/NC
Thank you again for your help.
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: monochron fails LED + switch test
That would seem to indicate that you have a bad switch there. Contact [email protected] with a link to this thread and ask for a replacement switch for your Monochron.
-
- Posts: 6
- Joined: Thu Sep 27, 2012 1:55 pm
Re: monochron fails LED + switch test
Thank you for your help!
-
- Posts: 6
- Joined: Thu Sep 27, 2012 1:55 pm
Re: monochron fails LED + switch test
You guys are awesome. Thanks to your help I now I have a fully functional monochron.
Thank you!
Thank you!
-
- Posts: 6
- Joined: Thu Sep 27, 2012 1:55 pm
Re: monochron fails LED + switch test
Not looking especially competent lately Try this link since the image wouldn't imbed:
https://www.dropbox.com/s/gmtbnsf82nb1k ... .57.21.jpg
https://www.dropbox.com/s/gmtbnsf82nb1k ... .57.21.jpg
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: monochron fails LED + switch test
Hmmm ... I think you need to take some of those Legos and build a Monochron enclosure...
Please be positive and constructive with your questions and comments.