Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login


Options
View
Go to last post Go to first unread
elviz  
#1 Posted : Sunday, April 24, 2011 12:16:31 PM(UTC)
elviz

Rank: Member

Groups: Member
Joined: 3/29/2009(UTC)
Posts: 52
Location: Finland

Since this is a common error people are making, I want to ask this question. I should receive my B II trident kit shortly and I don't want to do trial-and-error on this. What is the procedure to make the difference between 1.2V and 3.3V trident before soldering or connecting them to a power supply?

1) Are they labeled with a sticker or something similar?
2) Measuring one of the resistors?
3) Reading on the chip?
4) Some other way?



Edited by user Sunday, April 24, 2011 12:17:31 PM(UTC)  | Reason: Not specified

avr300  
#2 Posted : Sunday, April 24, 2011 12:38:32 PM(UTC)
avr300

Rank: Member

Groups: Member
Joined: 6/17/2008(UTC)
Posts: 921
Denmark

Thanks: 1 times
Was thanked: 70 time(s) in 69 post(s)
They use to be labelled.
Brian Donegan  
#3 Posted : Sunday, April 24, 2011 2:51:43 PM(UTC)
Brian Donegan

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA

Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
They are labelled.
elviz  
#4 Posted : Sunday, April 24, 2011 3:06:41 PM(UTC)
elviz

Rank: Member

Groups: Member
Joined: 3/29/2009(UTC)
Posts: 52
Location: Finland


Thank you for quick answer!
Erlend Sæterdal  
#5 Posted : Tuesday, May 10, 2011 8:20:24 AM(UTC)
Erlend Sæterdal

Rank: Member

Groups: Member
Joined: 7/27/2008(UTC)
Posts: 158

How can I see what the 1.2 V regulator is for ?
LeonvB  
#6 Posted : Tuesday, May 10, 2011 9:45:20 AM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
You could read the integration guide, found under documents.
Erlend Sæterdal  
#7 Posted : Tuesday, May 10, 2011 11:58:40 AM(UTC)
Erlend Sæterdal

Rank: Member

Groups: Member
Joined: 7/27/2008(UTC)
Posts: 158

LeonvB wrote:
You could read the integration guide, found under documents.


Yes you are right . I did but it could be easier to write 1,2 V on the PCB. There is really very much to read. I have done many diy circuits but those from Twisted Pear are more difficult than others or maybee it is only because it is in English ! d'oh! My patience is not the best.
tjencks  
#8 Posted : Thursday, June 2, 2011 12:26:32 PM(UTC)
tjencks

Rank: Member

Groups: Member
Joined: 11/10/2010(UTC)
Posts: 30
Location: Campbell, CA

I made this mistake ... I thought all Trident boards were the same and the through-hole resistor included changed the output voltage...clearly I was wrong as my BII with tridents added is not working right. Tracked it down to a voltage diff as I'm trying to make a dual-mono setup work (ie one is working one is not).

Brian I know you put stickers on stuff but my sticker came off...can you tell us what position to check on the trident to identify it as a V1.2 or V3.3 trident? Otherwise I will have to measure all positions and compare.

Best Regards,
Theo
pinnocchio  
#9 Posted : Thursday, June 2, 2011 12:33:24 PM(UTC)
pinnocchio

Rank: Member

Groups: Member
Joined: 11/3/2010(UTC)
Posts: 169
Canada
Location: Quebec

Each Tridents have individuals plastic bags and on each of those bags there is a label that tells you exactly where it goes on the BII PCB, including orientation like "IN to VD" or something like that.

Also, each Trident PCBs have a sticker with the voltage written on them.

Please double check this and confirm you have the labels.

Hopefully you did not mix all PCBs and resistors together. You need to be able to set the right current to the right Trident PCB with the resistor.

Ciao!
LeonvB  
#10 Posted : Thursday, June 2, 2011 9:56:06 PM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
Quote:
Hopefully you did not mix all PCBs and resistors together. You need to be able to set the right current to the right Trident PCB with the resistor.

I saw that one coming :) The voltage, position and resistor value are all mentioned in the integration guide. So all one would have to do if everything is mixed up is read the resistor value using one of the numerous sites available (fi. http://samengstrom.com/5...ead/Resistor_Color_Codes).
tjencks  
#11 Posted : Friday, June 3, 2011 11:38:28 AM(UTC)
tjencks

Rank: Member

Groups: Member
Joined: 11/10/2010(UTC)
Posts: 30
Location: Campbell, CA

Finding the value of the through hole resistor is not the issue here...I can measure this easy enough with my DDM or the color codes as LenovB mentioned. However since I assumed (wrongly) that all trident PCBs are the same ie have the same component values save the through hole resistor when my sticker fell off and things got mixed up I simply took the 10.5ohm resistor and assumed that it was what made a 1.2v board as the other two are 20ohm resistors. Therefore since there is one 1.2v board and two 3.3v boards ... well I assumed the odd man out gives 1.2v.

Now unfortunately the manual for trident is not up on the site yet nor the schematic so it kinda makes things hard to troubleshoot.

Russ / Brian can you help clear things up for us here?

Best Regards,
Theo
Russ White  
#12 Posted : Friday, June 3, 2011 1:16:43 PM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
Measure R8 on each trident. If it is 100K it is a 1.2V Trident.
LeonvB  
#13 Posted : Friday, June 3, 2011 2:18:48 PM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
Quote:
when my sticker fell off and things got mixed up

Ok, I must admit I didn't see that one coming. V1.0.5 now mentions the R8 value in case EVERYTHING gets mixed up, plus a few other minor changes.
tjencks  
#14 Posted : Friday, June 3, 2011 2:51:39 PM(UTC)
tjencks

Rank: Member

Groups: Member
Joined: 11/10/2010(UTC)
Posts: 30
Location: Campbell, CA

Alright gonna answer my own question after the purchase of a maginfiying glass so I can read the resistor values on the SMD resistors. You can tell a 1.2V trident from a 3.3V trident by looking at R8.

The value for 1.2V will be: 104
The value for 3.3V will be: 1471
Brick wall

now I gotta swap around my tridents Pray
pinnocchio  
#15 Posted : Friday, June 3, 2011 4:39:34 PM(UTC)
pinnocchio

Rank: Member

Groups: Member
Joined: 11/3/2010(UTC)
Posts: 169
Canada
Location: Quebec

What Russ is asking you is not to read what is written on the SMD (surface mount) resistor but rather use a DMM (digital multi meter) and probe the resistor at R8 (one probe on each side of the resistor).

BTW, 104 = 100K or if you prefer 10 + 4 zeros which reads 100000 ohms = 100K

So if you see that R8 has writings on it that says 104 it is the 1.2V Trident. Easier to just measure it unless you have good eyes! :)

Ciao!
Do

tjencks  
#16 Posted : Friday, June 3, 2011 7:12:41 PM(UTC)
tjencks

Rank: Member

Groups: Member
Joined: 11/10/2010(UTC)
Posts: 30
Location: Campbell, CA

Thanks for the clarification pinnocchio.

So now that I have switched things around I'm afraid that I may have a bad Trident as both Mute and Lock lights come on and I am measuring .2V on the 1.2V Trident between OUT and GND. I was measuring this as well before when I had the wrong Trident with the wrong though whole resistor in the 1.2V location.

So I know the first thing to try is to put the bead back in place and see if that corrects the situation ... however I'd like to get some advice before I remove the trident. Would the most likely thing be a Bad Trident in this case or might I have fried my Buff II?

Best Regards,
Theo
LeonvB  
#17 Posted : Saturday, June 4, 2011 6:05:49 AM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
I'd start by checking all of the soldering, esp. that of R4.

Edited by user Saturday, June 4, 2011 3:03:56 PM(UTC)  | Reason: Not specified

tjencks  
#18 Posted : Saturday, June 4, 2011 11:32:58 AM(UTC)
tjencks

Rank: Member

Groups: Member
Joined: 11/10/2010(UTC)
Posts: 30
Location: Campbell, CA

Thanks Leonv,

I'll start there and likely post my issue under the trident repair thread along with all the voltages I'm getting.

Regards,
Theo
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (4)
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.