Messages

1

TinyDuino Processors & TinyShields / Longer mounting screws or alternate ways of mounting large stacks

« on: January 14, 2014, 12:45:16 PM »

I am building a TinyDuino stack that is currently 5 boards tall. I want to screw this onto a PCB onto which I have soldered other components. The screws that come with the tinyduino are too small to accommodate this - I need something at least 2.5 cm long. Down the line I will very likely want to add another board on (when I figure BTLE out - look at my other threads!).

Where can I buy longer screws? Measuring with a calliper, the screws that ship with the TinyDuino are 1.2mm in dia. But M1, M1.2 are really hard to find - I did quite a bit of searching online. Any suggestions on where I should look or alternate ways of mounting these?

2

TinyDuino Processors & TinyShields / Re: Bluetooth low energy shield not working?

« on: January 14, 2014, 12:37:30 PM »

I have not figured this out as yet - I drifted onto something else but hope to come back soon. However, here are somethings that I found out in the meantime that may help:

1) Samsung Galaxy S4's BTLE does not work. There is a huge thread about this on their forums. However there appears to be a Samsung BTLE SDK that maybe worth trying. I however do not know whether the problems people were reporting were also present when using the Samsung SDK, though I speculate that is not the case as that would be totally brain dead on Samsungs part.
2) Apparently the phone to do BTLE work with is the iPhone. If you look virtually none of the commercially available BTLE devices support android or atleast support android out of the door. That is telling. But having said that I was not able to get an iOS device detect the TinyDuino BTLE either.
3) Apparently though people have got BTLE + "Arduino compatible" to work on iOS. Check out the RFDuino site - there were some code samples etc. there. Now while those will likely not work with TinyDuino out of the box, it maybe worth looking at to see if there is something obviously wrong that you are doing, esp on the phone side.
4) The other test that I am going to do is try and see if I can get one TinyDuino to talk to another one. I bought another TinyDuino + BTLE module to try that but have not as yet - <gripe gripe>kind of sucks though that I had to buy another module to see if TinyDuino works in the first place.</gripe gripe>

TinyDuino team - how do we know whether this works? What is your hello world test that we can use as a starting point. You folks have been rather quiet on this issue.

3

TinyDuino Processors & TinyShields / Bluetooth low energy shield not working?

« on: December 18, 2013, 08:50:21 PM »

Hi,

I setup my BLE shield and uploaded the sample code from http://tiny-circuits.com/wp-content/uploads/2013/12/BGLib_stub_slave_rev2.zip onto the TinyDuino. The LED on it is flashing green about once every second, which according to the code means that it is advertising. However here starts my problem - none of my devices can see the BLE shield. I scanned for bluetooth devices using my laptop and samsung S4 phone - neither see it. I would have thought this should be pretty straight forward, but I am a BLE and Arduino novice.

To set this up, I stacked the TinyDuino, the BLE shield one on top of the other. I topped the stack off with a proto board where I connected a 3V supply between VBatt and GND. Prior to this I had uploaded the demo code onto the TinyDuino. The system is being powered by a 3V DC power supply.

Nikhil

4

TinyDuino Processors & TinyShields / USB for power and bluetooth

« on: December 18, 2013, 09:45:50 AM »

Hi,

It appears as if the bluetooth shield cannot work with the coin cells on the board. The most convenient other way to get power while developing, is to plug in a USB cable into a computer via the USB shield. So here is the question - can I plug the bluetooth shield and USB shield onto the Arduino and use the bluetooth shield for communication and the USB shield purely to draw power?

Nikhil

5

TinyDuino Processors & TinyShields / Battery recommendation for WiFi

« on: December 12, 2013, 02:25:59 PM »

Hi,

Looks like the WiFi TinyShield needs its own batteries. Now I know I maybe asking for the impossible - I am looking out for the small batteries with long battery life. I would appreciate it if somebody could provide me with some options so that I could trade off battery life with size.

Nikhil