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166  Topics / Science and Measurement / Re: Data acquisition using excel or matlab on: March 17, 2014, 05:22:18 pm
That's a worry......... PLX is just a macro for Excel. What version of Office and what operating system are you using?
167  Using Arduino / Displays / Re: How to connect LCD touch in Arduino mega2560 on: March 16, 2014, 09:14:16 pm
I'm not aware of any. and you might find it merely moves the problem rather than fixes it.
168  Using Arduino / Networking, Protocols, and Devices / Re: about range of BLE on: March 16, 2014, 09:05:31 pm
OK, here is some information on BLE
169  Using Arduino / Networking, Protocols, and Devices / Re: about range of BLE on: March 16, 2014, 07:03:39 pm
. I wonder if we can setup the rang of BLE module with Arduino.

I believe English is a second language. Are you asking about reducing the the distance the bluetooth will transmit? If that is the case, why would you want to do that? I don't believe you can, and I don't believe there should be a need to.
170  Using Arduino / Displays / Re: How to connect LCD touch in Arduino mega2560 on: March 15, 2014, 07:52:23 pm
I guess you haven't read my other posts....

I was actually addressing the OP. Your other posts are normally models if succinct enlightenment, and you are just feeling a bit victimised after that run-in with Floresta

You mean you thought it was a plug and play  shield ?

Well, the question was about connecting, and it looked at first like you just connect it but, while the red thingy has a SD slot included, I think it is a display and it requires an intermediary shield. Plug'n'play is a bit fast and loose with these things and they take quite a bit of planning - hence mine sitting in the box for nearly a year.
171  Using Arduino / Displays / Re: How to connect LCD touch in Arduino mega2560 on: March 15, 2014, 06:48:21 pm
OK, I first though this is the most stupid post I have ever read, but I now believe your real question is

How do I fit a 40 pin plug in to a 36 pin socket?

The answer is - you don't. In short, I think you are missing a part.

Check with the LCD supplier and I believe you will find they sell a shield to take this display. It has a 36 pin plug to go into the end socket of the Mega in the manner you would expect, and a 40 pin socket on the other side and at the other end. It will also have the normal power pins etc., possibly another big socket for a different display, and maybe even yet another SD slot. 
172  Using Arduino / Networking, Protocols, and Devices / Re: Arduino Uno + Arduino wireless SD Shield + Seeedstudio Bluetooth Bee module on: March 14, 2014, 07:26:10 pm
Your problem is not very clear.  If it is software, the Bluetooth Bee is just a very expensive package for the common-or-garden HC-0x bluetooth module and should work the same way as any other HC-0x. 

If it is mechanical, which should be obvious, the Bluetooth Bee is designed to fit on a Bee Shield and there should be no problem using that shield  in conjunction with any other shield so long as there is no clash of pins - which is unlikely. The Bee Shield is made to accommodate more than  one Bee device, and that may offer you a better option for whatever wireless device you have in mind.

I believe the Bluetooth Bee has standard pin spacing, thereby enabling you to  install it on any prototyping shield.
173  Using Arduino / Networking, Protocols, and Devices / Re: loop as long as tera term is connecting to my pc Bluetooth and ardouin Bluetooth on: March 14, 2014, 04:45:01 pm
any hint how to do it?

Not much. I'm afraid............

I think I now understand:
1. Arduino "normally" uses readings from sensors to control motors - automatically

2. You want to be able to occasionally take over control via Bluetooth - manually

It seems to me that you are just interrupting the process with bluetooth but you really need a specific manual-start command and a manual-stop command that Arduiono must listen for.

Maybe that is too simple.......
174  Using Arduino / Project Guidance / Re: Commission? Guidance? Bluetooth control of two 9v motors speed and reverse on: March 14, 2014, 08:45:02 am
I submit the first thing to do is find an iPhone bluetooth app that would be suitable. After that, things will probably get progressively easier. There are plenty of motor projects available.
175  Using Arduino / Networking, Protocols, and Devices / Re: problem shield bluethoot on: March 14, 2014, 08:33:08 am
The bluetooth modules are different, and I believe they use different command sets. The first module is an ordinary HC-0x.

IF you can properly configure the shield so that Rx is on pin 0 and Tx on pin 1, these notes should enable you to get it to work.
I hope you have instructions to do this, and I believe the jumpers would be used to select the pins.
176  Using Arduino / Networking, Protocols, and Devices / Re: loop as long as tera term is connecting to my pc Bluetooth and ardouin Bluetooth on: March 13, 2014, 06:09:04 pm
I don't think there is any logic in what you are saying. You can have a condition within the loop that responds to an outside signal but that is not the same thing. The LED on the bluetooth has nothing to do with Arduino and I don't think bluetooth can send messages back to Arduino about whether it is connected or not. I guess you could have an optical coupling with the LED but I think you should think about whether you really need to do this.
177  Using Arduino / Programming Questions / Re: Communication between Arduino & HC-05 Bluetooth module with PC on: March 13, 2014, 09:22:41 am
Try this

If nothing else, it involves a lot less code. It is also more useful for testing.
178  Using Arduino / Project Guidance / Re: connect arduino uno to pc via bluetooth on: March 13, 2014, 07:07:48 am
I don't think you know what you want but, whatever it is, you can safely forget about the schematic. The module you refer to is a common HC-0x module on a back board. This may be connected to your Arduino simply by using four male/female jumpers. If you really need to make a shield you could get a small prototyping shield kit and fix the same module to that. Only four connections are needed. Other than for the intellectual exercise, I don't know why you would bother, unless you can think of other uses for the proto shield, and then it's not uncommon to use flying leads for the Bluetooth anyway.

This background might be useful
179  Using Arduino / Project Guidance / Re: Arduino Pro Mini, 3.3V and JY-MCU bluetooth on: March 13, 2014, 06:38:35 am
Probably I should just buy this module instead?

Does it not run 3.3 v? And there for their should not be any problems, when my Pro Mini runs on 3.3 v ?

I don't know anything about that board, I have never seen it before. Unfortunately, it seems that sellers don't know anything about it either. They claim it runs on 3.3v but there is a terminal clearly marked 5.0 and there is only one conclusion you can draw about that. I think it's a fair bet that it runs on both 3.3 and 5v - something one would think the sellers would trumpet loud and clear for all to hear, but they don't even know what bluetooth module it is. It is clearly an HC-0 something but you will never know what, until you test it. 

For all that dark mystery, I would be inclined to buy it. You probably don't need an HC-05, so if it's an HC-06, which I think is likely, it is OK. It won't be any more unsuitable than what you've got.

.........And yes, the HC-0x
modules are 3.3v devices but note that the JY-MCU package has all the level shifters on
board and is clearly labelled for 3.6 to 6v operation. If your Arduino is made for 3.3v
operation, read no further. "

I'm really glad you are reading what I have written, particularly as this bit is in a state of flux, somewhat. More to the point, it appears that you are one of the gang the is moving the goalposts, and I am struggling to keep up.

Note that I refer to the JY-MCU.

Yes, the JY-MCU is clearly labelled for a 3.6 to 6v power supply, and yes, you shouldn't have much faith if you are only feeding it 3.3v. Nobody can doubt the theory but the practice may be different.

It is now clear that I was wrong to say that all the levels are fixed on the JY-MCU board. The Tx-Rx pins are marked for 3.3v operation. Don't ask why they would only do half the job.  There are varying views on all of this, mine is to ignore it all. A better view is that Arduino doesn't care, so don't worry about the Rx, but Bluetooth is inherently 3.3v and might get uptight about 5v leaned against its Rx pin, so regulating Arduino's Tx to 3.3v is a good idea. I still have not done this but it would be irresponsible not to mention it, and I update that PDF pretty regularly.

Which might imply, that it just doesnt work, when the Pro Mini runs on 3.3v.?.

Well, I'm sure you can't rely on it  but there is a similar thread here
where I reckoned the power was suss, and I was wrong - for now.

I tried applying 4.5v through RAW, but still nothing.

As I understand it the RAW input allows you to put 4.5v through the Pro Mini's on-board regulator. I therefore assume you are feeding the same 4.5v to Bluetooth, and that should work - providing there is adequate current.
180  Using Arduino / Networking, Protocols, and Devices / Re: How can I test this serial BlueTooth module? on: March 12, 2014, 11:07:38 pm


I soaked up the bride and now it works with the UNO! Now I can try again on the flight controller.


I'm really pleased to hear this - just some dumb thing that will only happen once.

I recall reading about that solder problem but I had forgotten about it.

That is further input to my notes, so thank you!
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