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106  Using Arduino / Programming Questions / Re: Android Smartphone to laptop on: July 22, 2014, 10:17:14 pm
I don't think it is necessary to write an Android app, as somebody has already done it.
107  Using Arduino / Sensors / Re: Measurement of DC current with non invasive method on: July 22, 2014, 10:02:32 pm
Unfortunatly in need to work with DC current..

I thought those clamp-on things worked by Oersted effect. If they don't, there is probably something that does. And why the need to be non-nvasive anyway?
108  Using Arduino / Networking, Protocols, and Devices / Re: Using AT-Commands to setup HC-05 BT device on: July 22, 2014, 02:40:35 am
One line of code won't help anybody much but you might try here:

http://forum.arduino.cc/index.php?topic=209363.0
109  Using Arduino / Displays / Re: 2x16 LCD SCREEN - NEED FOR 2X SIZE LETTERING on: July 20, 2014, 06:59:36 pm
You're right. I've found this link I had



I didn't think it was worth pursuing, and I don't know the procedure. However, since then I have had a 20x4 and that may be a e better proposition and should take a similar procedure. My graphic display has numbers 50 pixels high, and that suffices.
110  Using Arduino / Programming Questions / Re: avrdude: stk500_getsync(): not in sync: resp=0x00 error on: July 20, 2014, 06:09:50 pm
the serial port and board are correct.

Any ideas?


Bad cable?
111  Using Arduino / Displays / Re: 2x16 LCD SCREEN - NEED FOR 2X SIZE LETTERING on: July 20, 2014, 05:49:52 pm
You might find that more easily accomplished on a graphic display. They commonly have multiple font sizes and I imagine they can be made even larger.
112  Using Arduino / Project Guidance / Re: HC-05 changing PASSWORD on: July 20, 2014, 11:46:21 am
http://arduinofy.blogspot.com.au/2013/10/tutorial-programming-hc-05-at-mode-with.html
113  Using Arduino / Project Guidance / Re: Problem with max7219 ! on: July 20, 2014, 03:48:52 am

-The wiring is good.
-The scketch is good too!


Well, that's what you say, but I bet one or the other is wrong. I suppose there might even be a faint possibility that youi are using a common anode 4x7, but we'll will never know until you reveal your code and wiring.

If you find it hard to be forthcoming, you might find some useful stuff here first.

http://playground.arduino.cc/Main/MAX72XXHardware#.UxPXAc76U1I 

http://forum.arduino.cc//index.php?topic=172192.msg1279382#msg1279382
114  Using Arduino / Networking, Protocols, and Devices / Re: Arduino Wireless Bluetooth Transceiver Module phone connecting problem on: July 19, 2014, 09:03:11 pm
I'm not sure what is happening, and the IDE can stumble if you stuff up the procedures.

The USB cable connected to PC shares the serial port with bluetooth. Always ensure Blurtooth is disconnected when uploading code from PC, do not try to connect via Bluetooth on the PC while the cable is connected (why would you want to do that anyway?), but note that you can use the serial monitor on PC while Bluetooth is connected to your phone.

You may find that the COM port you think are using is actually inoperative, so check that. The simplest solution is close the IDE and start over. The IDE is not bulletproof. This particularly applies if you are swappoing Arduinos.
115  Using Arduino / Sensors / Re: Default DS18S20 example returns perplexing results on: July 19, 2014, 07:56:56 pm

Adding a library is adding variables.

No it isn't. Adding a library is adding a fixed and well-established procudure, which is quite the oppoosite and, most importantly, puts you in the same arena as the majority who don't have a problem. This is a rather good arena to be in as your only priority is to find out why you have a problem where nobody else does. It also means that the work that the library does can be eliminated from the analysis of the problem. As it is, I and many who don't have a problem,  won't bother to look at your junk code because there is no point in doing so, and thus leave you out in the cold simply because you opt for self-flagellation.

It so happens that elSupremo does use your code and declares it fine, but you can only put that down to good luck, and so you can now come to the most likely conclusion - if the code is kosher, the wiring isn't. As you rightly point out, the circuit is not complicated.

It is just faintly possible that there is some other mechanical problem. I wouldn't recommend it as standard procedure, but the link below might help sort it out. It uses no libraries at all, not even one-wire.

http://sheepdogguides.com/arduino/ar3ne1tt.htm
116  Using Arduino / Displays / Re: Arduino Uno Nokia 5110 LCD Shield on: July 19, 2014, 11:44:33 am
What you show is not a shield. It is a Nokia 5110 module that needs to be installed on a shield. It has virtually no benefit over the bare 5110 modules commonly found on eBay, but I bet it costs a lot more.
117  Topics / Home Automation and Networked Objects / Re: DS18B20 on: July 19, 2014, 09:55:57 am
Quote
Any ideas what I should check?

I am assuming that the temperature readings are OK until they get to the critical condition. Therefore, all the problems are in that arena, and there is nothing wrong with the temperature code. One thing for certain is that the delay command you already have is all you need.

I don't know anything about relays but, if you are driving them off the Arduino pins, there may be a power problem. This can be verified by running the project with the relays disconnected.

Since the temp is a float, I would be inclined to call swing and setpoint as floats. If your relay sticks at 35 but comes good at <=36, I guess using all floats is very likely the answer.
118  Using Arduino / Networking, Protocols, and Devices / Re: Bluetooth HC-05 YJ-MCU enter AT-MODE on: July 18, 2014, 08:09:03 pm
http://forum.arduino.cc/index.php?topic=209363.0
119  Using Arduino / Project Guidance / Re: Arduino ---> Android Bluetooth on: July 18, 2014, 07:50:19 pm
OK. You will get plenty of support with file transfer here.
120  Using Arduino / Sensors / Re: Default DS18S20 example returns perplexing results on: July 18, 2014, 07:39:30 pm
This may be true, but using it might assist you to identify the garbage you have but nobody else does. It would certainly be more constructive than hoping Linux will solve an Arduino problem.
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