0

Whoops - I think I messed up
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

by adafruit on Wed Feb 13, 2008 5:28 pm


adafruit
 
Posts: 12151
Joined: Thu Apr 06, 2006 4:21 pm
Location: nyc

by nutt318 on Wed Feb 13, 2008 6:02 pm

oPossum wrote:Don't know what you mean by 'second set of resistors'.

.
That was a typo on my part, I meant to say 'second set of transistors'. Is there a way to only use 4 AA's and not have to wire up the second batter term along the the 2 other transistors?

If so how would i need to do this?

Also what is the red LED for and if i dont solder it in will the board still work?
nutt318
 
Posts: 65
Joined: Fri Jan 25, 2008 5:43 pm

by caitsith2 on Wed Feb 13, 2008 6:03 pm

There is a bug in the batchpcb calculation formula. The pcbsize (sq inch) has to be rounded up. There is absolutely no fractional square inches, with batch pcb. This effectively makes the minimum billable square inch equal 1.

That is, "cost = pcbnum*2.5*roundup(pcbsize)+10;"
caitsith2
 
Posts: 217
Joined: Thu Jan 18, 2007 11:21 pm

by caitsith2 on Wed Feb 13, 2008 6:09 pm

nutt318 wrote:Also what is the red LED for and if i dont solder it in will the board still work?


The red LED shows you exactly the flashing sequence that is coming out of the IR LEDs. This is why it is optional.
caitsith2
 
Posts: 217
Joined: Thu Jan 18, 2007 11:21 pm

by oPossum on Wed Feb 13, 2008 6:38 pm

The red LED will show the 'IR LED stuck on' problem that can occur with weak batteries.

This is the minimum circuit for single 4xAA power. Everything shown has a purpose and is necessary.

Image
oPossum
 
Posts: 636
Joined: Fri Oct 26, 2007 12:42 am
Location: Michigan, USA

Finished Product

by nutt318 on Thu Feb 14, 2008 12:26 am

Hopefully this works, now I just need to solder on the wires for the battery pack.

Anyone see anything wrong?

Image

Image
nutt318
 
Posts: 65
Joined: Fri Jan 25, 2008 5:43 pm

by oPossum on Thu Feb 14, 2008 12:41 am

All the transistors are backwards. Everything else looks good.
oPossum
 
Posts: 636
Joined: Fri Oct 26, 2007 12:42 am
Location: Michigan, USA

by caitsith2 on Thu Feb 14, 2008 12:42 am

Don't see anything wrong.
caitsith2
 
Posts: 217
Joined: Thu Jan 18, 2007 11:21 pm

by nutt318 on Thu Feb 14, 2008 12:44 am

oh really, i thought it dint really matter which way they went?

caitsith2, I flashed the chip with your ehp firmware using just the us codes and when I hit the button the gren light comes on for a while then back off for about 6 times or so. Also it doesnt turn anything off, any ideas on what it could be?
nutt318
 
Posts: 65
Joined: Fri Jan 25, 2008 5:43 pm

by nutt318 on Thu Feb 14, 2008 12:52 am

I did try the stock firmware code that is on the normal tv-b-gone v1.1 and it WORKS!!

Now I just need to test out this thing and see how far it works from.

Is there any harm in running this chip with the normal code? Will I get as good of performance out of it?

Thanks.
nutt318
 
Posts: 65
Joined: Fri Jan 25, 2008 5:43 pm

by oPossum on Thu Feb 14, 2008 12:53 am

It won't work with the transistors backwards.
oPossum
 
Posts: 636
Joined: Fri Oct 26, 2007 12:42 am
Location: Michigan, USA

by nutt318 on Thu Feb 14, 2008 12:54 am

Do you mean with the new ehp code it wont?

Because it works with the old code that is with tv-b-gone 1.1
nutt318
 
Posts: 65
Joined: Fri Jan 25, 2008 5:43 pm

by oPossum on Thu Feb 14, 2008 12:57 am

It is compatible with V1.1 firmware (but not V1.0). The range will be really bad with the transistors backwards.
oPossum
 
Posts: 636
Joined: Fri Oct 26, 2007 12:42 am
Location: Michigan, USA

by nutt318 on Thu Feb 14, 2008 1:00 am

banned, so you would recommend me reversing all 8 47ohm resistors?

Doing this would it work with the ehp code that caitsith2 made?
nutt318
 
Posts: 65
Joined: Fri Jan 25, 2008 5:43 pm

by caitsith2 on Thu Feb 14, 2008 1:02 am

Reversing the 47ohm resistors will not help. only reversing the transistors will.
caitsith2
 
Posts: 217
Joined: Thu Jan 18, 2007 11:21 pm

Please be positive and constructive with your questions and comments.