Tell me more ×
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It's 100% free, no registration required.
up vote 0 down vote favorite

I'm trying to enter on the command mode on this board http://iteadstudio.com/store/images/produce/Platform/ArduinoCom/IteaduinoBT/iteaduinoBT_DS.pdf.

It is a bad-documented, no support Arduino BT clone. I would like to send some AT commands, but Its not working.

Just to make sure that i'm not doing something wrong, i would like to double check the jumpers configuration. As you can see in the Datasheet lnked above, we have two positions for the jumpers (in a 6 pins set, it confuses me already, because with 6 pins, we should have 3 combinations, and not 2 as described)

So from the picture attachedjumpers which are the A,B and C(?!): red: A, yellow: B?

EDIT

From the data sheet:

a jumper to set the connections of HC-05. When the jumper is set in B, the HC-05 communicates to FT232R, when the jumper is set to A, the HC-05 communicates to Atmega328P(board).

I was just able to enter in the command mode, setting the SWITCH to CMD, Jumpers at A (as cited in the accepted answer) and connected via USB, 38400. It means: the data sheet is wrong, it inverted the operations between jumpers A and B, right? AFAIK the communication HC-05 - FT232R is the serial communication that I used between my computer and the HC05 via cable and not bt, right?

share|improve this question
Don't know exactly what you mean. I think best is to elaborate/clarify 2nd part of your question a bit more in a new question here as it is out of scope of the original question; the question is set to 'Answered' so subject matter experts will probably not look at it. – jippie Apr 22 '12 at 11:17

1 Answer

up vote 2 down vote accepted

Please refer to circuit diagram. I think (with respect to your image above) it is supposed to be two parallel jumpers, oriented horizontally. They either go both on the left, or both on right.

 B A            B                A
o o o          o-o o          o o-o
o o o          o-o o          o o-o
share|improve this answer
thanks guy, you saved my week :-) – VP. Apr 22 '12 at 11:00
I just updated my question, looks like the DS is wrong. what do you think, based in my updates – VP. Apr 22 '12 at 11:05

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.