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Author Topic: $50 Robot connecting items on the PCB to the microcontroller  (Read 2920 times)

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Offline NubyTopic starter

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I am not sure of myself so I hope noone minds that I ask some real basic things about constructing the PCB in Step 3 of the $50 Bot.


I have the DIP socket, 3X6, 3X5, and the 2X5 male header pins soldered in place. As I understand it of the 6 pins closest to  DIP socket get attached to pins directly across from them on the socket one to one 23-28. The 5 pins closest to the DIP socket also get attached in the same manner one to one 2-6.

Q1 What is the manner of attachment, fill-in with solder, make small jumpers or what else did I not see in the picture?

Q2 The Programmer Head pins go to location across the board I am think I need jumper wires for them, do I tin them and attach them to the pins as called out?

Thanks ahead of time for putting up with me.

Nuby  :-[

Offline Conscripted

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #1 on: July 12, 2009, 10:44:15 PM »
Quote
Thanks ahead of time for putting up with me.

No one here is "putting up with you" we are here to help when we can.
Quote
Q1 What is the manner of attachment, fill-in with solder, make small jumpers or what else did I not see in the picture?

Basically you fill them in with solder so they are all connected. You can see it pretty well in this picture. http://www.societyofrobots.com/images/sbs_connect1_large.JPG Just imagine that it wasn't painted red and you will get the idea. The area between each pad is filled with solder.
Quote
Q2 The Programmer Head pins go to location across the board I am think I need jumper wires for them, do I tin them and attach them to the pins as called out?

You are correct. You will need jumpers to connect to the pins that aren't next to the programming pins.

Good luck with your project! Let us know if we can be of any assistance.

Conscripted

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #2 on: July 13, 2009, 12:15:41 AM »
Thanks for your help and input will I will keep asking so I can get this bot built. I know I am going to need help with the Microcontrol/Program and all so stay tuned.
Thanks
Nuby

Offline NubyTopic starter

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Offline SmAsH

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #4 on: August 24, 2009, 12:57:42 AM »
Those aren't really failures, just incomplete boards...
I take it all thats left is connecting the power buses?
Overall it looks like an excellent board, all the soldering is very neat and tidy and the wiring is superb!
Howdy

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #5 on: August 24, 2009, 06:43:28 AM »
Thank you for the pat on the back about neatness. I do not get what you mean incomplete, please provide details (and a lot of them)?  :-[

Thanks
Nuby

Offline cyclopediatechtilon

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #6 on: August 24, 2009, 09:23:49 AM »
http://www.societyofrobots.com/images/sbs_connect1_large.JPG
as mentioned above, you just need to connect the power buses.smash is right.
then the board is compelete.
Best of luck,
cyCLOPedia
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the dude. dont mess wit me

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #7 on: August 24, 2009, 08:44:27 PM »
Sorry "Cy" i do not get what that picture has to do with my issue?

Thanks
Nuby

Offline SmAsH

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #8 on: August 25, 2009, 01:00:41 AM »
the easiest way that i found was to "tin" the empty pad then bridge it with solder...
but the best way that i have found was to solder the pin directly next to the socket which requires no jumpering
but i guess its too late for that :-\
Howdy

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #9 on: August 25, 2009, 08:09:30 AM »
You have lost me guess i do not get the power buses at all. :-[ I do not understand what I did not do. I looked this up on here and see it discussed but do not get it, sorry. I am thankful for your help and sorry to be so dense.

Thanks
Nuby

Offline Finnik

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #10 on: August 25, 2009, 08:19:34 AM »
I've attached a picture which shows the connections you still need to make in red, just connect the pins using solder.
Think outside the box... inside is to crowded.

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #11 on: August 25, 2009, 11:43:00 PM »
I think you might have just turned the light on!  ;D.
I just need to fill in the red lines connectting the pins with solder from top to bottom in four places and this will complete my power buses?
(WOW even sounds like I might understand!)

Thanks
Nuby
http://yfrog.com/44zczca7sggz3ca9sfp6ccavej

Offline SmAsH

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #12 on: August 26, 2009, 12:04:41 AM »
yeah, that'll pretty much do it ;D
Howdy

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #13 on: August 26, 2009, 05:41:00 AM »
Please review the location of the three pin header. It matches the instructions pictorial but the instruction may indicate to move it one hole over? The input voltage is ok nowbut the regulated does not seem to be connected.

Thanks :-[
Nuby

Offline SmAsH

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #14 on: August 26, 2009, 05:51:06 AM »
no? it looks fine to me...
Howdy

Offline Finnik

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #15 on: August 26, 2009, 06:43:30 AM »
Your three pin header is just fine where it is, there are and should be only two connections to the header, ground and input voltage. One pin is left unconnected to make sure you place the connector the right way round. The regulated voltage only needs to be connected from the output out of the voltage regulator to the power buses, just the way you did it with the green wire.
Think outside the box... inside is to crowded.

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #16 on: August 26, 2009, 08:09:18 AM »
Thanks to you both, off to work will see tonight why there is no 5V juice running.

Thanks
Nuby

Offline Finnik

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #17 on: August 26, 2009, 08:46:20 AM »
Think I've spotted the problem, the way you've soldered in the 3 pin header, the center pin should be ground, and the pin on column E should be input voltage. In most 3-pin connectors the positive line is in the center, so it might be better to reconnect it so that input voltage is on the center pin and ground on one of the sides.
Think outside the box... inside is to crowded.

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #18 on: August 28, 2009, 10:28:57 PM »
I could not have gotten this far with out all you guys helping me. To let you know that you have been teaching me something I found out what the problem was with the 5V power bus. The regulator was bad! got it replaced. I might have over heated it while soldering? :-[ So thanks again and see you in the programming section....

Thanks
Nuby

Offline SmAsH

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #19 on: August 28, 2009, 10:32:32 PM »
you can damage regulators by overheating?
you must've held the soldering iron on there for a while man :P
got it replaced
so you ordered a new one or is it in the board working?
Howdy

Offline NubyTopic starter

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Re: $50 Robot connecting items on the PCB to the microcontroller
« Reply #20 on: August 28, 2009, 10:38:18 PM »
I was guessing about the soldering? Had one that tested at 5V from the 9V source. Seems to be good to go will find out.

Thanks
Nuby

 


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