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Author Topic: $50 help with electronics  (Read 14716 times)

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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #30 on: February 22, 2009, 12:14:58 PM »
Quote
READ THIS POST before continuing!!! I designed the programmer header for an older programmer version, so chances are you will need to convert it to the new 6 pin header. It is easier to wire, it just requires a bit more of thought. Just check the number of pins on your programmer cable to know if you need 6 pins or 10 pins.

How do i have to change things to work with the newer thing (if anything needs to be changed)?

Offline Razor Concepts

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Re: $50 help with electronics
« Reply #31 on: February 22, 2009, 01:17:56 PM »
so everything is soldered to its own little pad and is only connected by wires. So in this picture:


nothing is acctuly connected, there just all soldered onto the board?


Thanks

Joe


Correct. Later on, Admin goes through and bridges the pads that need to be connected.

As for the programming headers, it depends on which programmer you will use - so what programmer are you using?

Offline MrWizard

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Re: $50 help with electronics
« Reply #32 on: February 22, 2009, 03:15:50 PM »
Yes first solder everything to the small islands, so every component is stuck to board. Then read the howto carefully, because the text tells you what to do.
Later on in the How to everything becomes clear, do follow the how to carefully.....

Same as me last night....new with it too, but just follow it and it will work..

Ooops...kinda double post
« Last Edit: February 22, 2009, 03:18:11 PM by MrWizard »

Offline SmAsH

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Re: $50 help with electronics
« Reply #33 on: February 22, 2009, 11:17:57 PM »
make sure you show us pictures of your board later :)
for the programmer headers look at the programmer you are using and see how many holes there are. if it is different then we'll talk. also does anyone know where a tutorial to make your programmer cable is?
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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #34 on: February 23, 2009, 09:22:10 AM »
i have the MKII or something with the ATMEG8 or something.

Also im confused how to connect the -/+ of the servo to something as its in a weird plactic block with three metal pads.

Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #35 on: February 23, 2009, 12:52:44 PM »
ive found out from the cable its a 6 pin, what do i have to change?
PLEASE REPLY SOON, IVE ALREADY STARTED AND NOW IM HOOKED WITH THE SOLDERING!


Thanks

Joe

Offline RiffRaff

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Re: $50 help with electronics
« Reply #36 on: February 23, 2009, 01:24:10 PM »
At this point, I think you are correct, that noting is connected- all soldering is only to fastend the components to the board.  Some of those things WILL be connected later though.  Of the three 6-pin headers, the one on the right- all the pins will be connected together; this is the gound.  For the 6-pin header in the center- all pins are connected also; this is your postive or power side.  Now for the 6-pin header on the left, each pin will be connected to the dip socket pins even with them to make circuits with the controller chip which will be plugged into the dip socket.  So you will have to bridge the space between the left pins and the socket with either solder or wire- soldered wires.  I used wires because my soldering iron is too blunt and my soldering too sloppy so I got too much solder on the board and risked shorting between the individual bridges.

Does that make it clear, or just confuse you?  I'm pretty new at this too.

Riff

Offline superchiku

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Re: $50 help with electronics
« Reply #37 on: February 23, 2009, 01:29:00 PM »
that looks exactly like the ADMIN's soldering...image...good job...
JAYDEEP ...

IT AND ROBOTICS ENGINEER

"IN THE END IT DOESNT EVEN MATTER"

Offline RiffRaff

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Re: $50 help with electronics
« Reply #38 on: February 23, 2009, 01:37:19 PM »
ive found out from the cable its a 6 pin, what do i have to change?
PLEASE REPLY SOON, IVE ALREADY STARTED AND NOW IM HOOKED WITH THE SOLDERING!


Thanks

Joe


The schematic attached to this post should help you figure out your programmer connections:
http://www.societyofrobots.com/robotforum/index.php?topic=3292.0

Riff

Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #39 on: February 23, 2009, 02:07:37 PM »
OH.. ok thanks, i realise now, i just add a couple of pins.

Offline SmAsH

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Re: $50 help with electronics
« Reply #40 on: February 23, 2009, 02:48:14 PM »
that looks exactly like the ADMIN's soldering...image...good job...
...that is admins soldering job.... look in the tut
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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #41 on: February 24, 2009, 09:40:06 AM »
Ok, i have now got a problem, i just figured out how to do all of it, and when i was doing the last three pins the solder all of a sudden sticks to the iron!!!! On the web someone said this is because the tip is dirty, but ive tried everything to clean it!, does anyone have any suggestions?

Please Help

Thanks In Advance

Joe

Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #42 on: February 24, 2009, 09:49:43 AM »
Also, which resistors do i use the 0.25W or the 0.4W?

Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #43 on: February 24, 2009, 10:20:19 AM »
Also i think i may have put the DIP socket thing the wrong way round, does this matter? i figure it just matters which way you acctuly put the microcontroller in it.

Offline MrWizard

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Re: $50 help with electronics
« Reply #44 on: February 24, 2009, 11:48:48 AM »
The DIP around, in function it will work.  But it can confuse someone else if he/sha has to look at your soldering-project. The little mark in the middle points to the side of  the mark on the controller and pin 1.

For the better solder it the wright way so nobody gets confused (keeping to standards is a virtue).

Offline SmAsH

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Re: $50 help with electronics
« Reply #45 on: February 24, 2009, 01:31:50 PM »
use the modify button please, and you should be fine with 1/4 watt resistors. it doesnt matter which way the socket is unless its a special shape (which its not). and to clean your soldering iron get a soldering stand with a sponge tray, moisen the sponge and heat the iron up. when the iron is hot wipe it on the sponge. hope this helped  :)
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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #46 on: February 24, 2009, 01:40:35 PM »
Ok, thanks for the reply, i will next time use the modify button, sorry about that. Thanks For the info on teh socket and resistors that really helped, but the soldering iron still does not work aafter cleaning with a wet spounge.


Thanks

Joe

Offline SmAsH

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Re: $50 help with electronics
« Reply #47 on: February 24, 2009, 01:43:48 PM »
hmm, how do you solder? do you apply solder onto the iron and bomb the component? or do you heat the lead then add solder? also for anyone who knows whats the value for the resistor for the led (near the power buses)? is it 1.62k? or 340ohm?
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Offline MrWizard

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Re: $50 help with electronics
« Reply #48 on: February 24, 2009, 03:04:46 PM »
He dips the whole board with components in a heated solder pan .....I suppose  ;D ;D ;D ;D

Offline MrWizard

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Re: $50 help with electronics
« Reply #49 on: February 24, 2009, 03:11:50 PM »
hmm, how do you solder? do you apply solder onto the iron and bomb the component? or do you heat the lead then add solder? also for anyone who knows whats the value for the resistor for the led (near the power buses)? is it 1.62k? or 340ohm?

The resistor before the LED must be 340 ohm , it just prevents the LED from being a one second shiny star.
The 1.6 Kohm resistors are used for the Photoresistors (eyes) in the project.

Offline SmAsH

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Re: $50 help with electronics
« Reply #50 on: February 25, 2009, 12:15:50 AM »
ahh yes, i didnt think about the photo's. thanks bud  :D im almost finished the board, everything but the dip socket is in!
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Offline cosminprund

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Re: $50 help with electronics
« Reply #51 on: February 25, 2009, 02:09:18 AM »
hmm, how do you solder? do you apply solder onto the iron and bomb the component? or do you heat the lead then add solder? also for anyone who knows whats the value for the resistor for the led (near the power buses)? is it 1.62k? or 340ohm?

You NEVER put solder on the soldering iron and then bomb components :) Spend 10 minutes and learn some good soldering technique, you'd be amassed by the results. I know I was :D The idea's to apply heat to the spot where the two components meet and then introduce the solder, it will flow and fill the gaps between the components. Something based on surface tension and capillarity. There were a few videos on soldering posted on the Videos or on the Misc areas lately, look them up. Or search for "soldering" on YouTube, you'll find them.

Offline SmAsH

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Re: $50 help with electronics
« Reply #52 on: February 25, 2009, 02:14:35 AM »
yes i know, that is how i solder know. i used to 'bomb' the components if space wasn't crucial but now with microcontrollers i have learnt to be precise.
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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #53 on: February 25, 2009, 09:42:58 AM »
lol, i dont bomb the components, i solder properly, it turns out that the spounge thing DID work, BUT after i tried to solder without cleaning at first one of the pads has gone all black and will not be soldered just on that pad.

Please Help.
Thanks

Joe

Offline SmAsH

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Re: $50 help with electronics
« Reply #54 on: February 25, 2009, 02:35:01 PM »
hehe, when you first heat the iron up wipe it on the sponge and then apply a small amount of solder onto the end (tinning). i get that black stuff too sometimes, never knew what it was.
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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #55 on: February 26, 2009, 12:54:08 AM »
dont worry, i got it fixed now, i used wire wool, or steel wool or something to just wipe the muck of the end!

Thanks

Joe

Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #56 on: March 01, 2009, 01:00:52 AM »
OK, i got two more questions;

1) im confused how i wouold attach the photoresistors onto the pins.

2)After i finished im going to add the IR rangefinder expansion, i have a spare speaker that i might make do something interisting, how do i test it the speaker works (it should do because the TV's sound worked before i took it apart i just want to double check) And how would i make the speaker say anything, or would i need a bigger thing instead of the Atmeg8? If i need a bigger than Atmeg8 then i wont bother (for now) but the anwsers will still be used eventuly (maybe with another robot).



Thanks


Joe

Offline SmAsH

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Re: $50 help with electronics
« Reply #57 on: March 01, 2009, 01:11:55 AM »
if you've made the sensors just plug em in (make sure ground wire is on the farthest pin away from the mcu)! thats if you crimped the end, if you didnt you'll need to crimp them http://www.societyofrobots.com/electronics_wire_connector.shtml make sure power is in the middle! good luck
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Offline Joesavage1Topic starter

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Re: $50 help with electronics
« Reply #58 on: March 01, 2009, 01:25:02 AM »
It dosnt have that black thing on though, i bought the photoresistors, they have one posotive and one negative terminal (well 2 terminals each at least).

Offline SmAsH

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Re: $50 help with electronics
« Reply #59 on: March 01, 2009, 01:29:55 AM »
Howdy

 


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