Messages

31

General Discussion / Re: BT RN42

« on: December 14, 2014, 03:44:32 PM »

By default, these are programmed to use 57600 as the baud rate, although several Bluetooth TinyShields have accidentally been shipped with the resistor R4 included on the assembly - this will set the UART baud rate to 9600.  Check to see if this is present if you are having issues, if so, you will need to set the UART baud rate of your TinyDuino processor to 9600 baud.  You can also remove the resistor to return this to 57600 baud, or contact us at TinyCircuits and we can modify the unit for you.

You can find this described on the learn page for this board here:

https://tiny-circuits.com/learn/tinyshield-bt

Thanks,

Ken
TinyCircuits

32

TinyDuino Processors & TinyShields / Re: Having trouble with using WIFI and GPS same time

« on: December 14, 2014, 03:42:06 PM »

Dude - We've tested this out here and it does work if you do the configuration in the right order.  However if you do need to toggle the GPS on and off using this pin, it will mess up the CC3000.  So if both the WiFi and GPS are used at the same time, you'll need to reconfigure them both if you put one or the other to sleep.

Thanks,

Ken
TinyCircuits

33

TinyDuino Processors & TinyShields / Re: Power consumption in various sleep modes

« on: October 07, 2014, 11:46:51 PM »

The power consumption of the TinyDuino processor board is pretty much exactly as called out in the datasheet for the Atmel ATmega328p, so the datasheet is the best place to calculate the power draw based on the peripherals that are enabled and the power mode being used.

Thanks,

Ken
TinyCircuits

34

TinyDuino Processors & TinyShields / Re: flat led for tiny duino.

« on: October 07, 2014, 11:44:26 PM »

A good option for this would be a neopixel, which is a single chip smart tricolor LED.  Adafruit has these:

http://www.adafruit.com/products/1260

Thanks,

Ken
TinyCircuits

35

TinyDuino Processors & TinyShields / Re: About the analog joystick on the new joystick tinyshield

« on: October 07, 2014, 11:42:25 PM »

Thanks!  Here's a link to the mini joystick:

http://www.digikey.com/product-detail/en/254SA104B50B/254SA104B50B-ND/1755924

Ken
TinyCircuits

36

TinyDuino Processors & TinyShields / Re: Having trouble with using WIFI and GPS same time

« on: October 02, 2014, 10:10:45 PM »

Sorry that you're having problems.  It looks like this is related to the wake pulse of the GPS module which puts it to sleep when you init the cc3000 WiFi.  You can indeed use both modules at the same time, try to change the code in your setup to this instead:

  pinMode(GPS_SYSONPin, INPUT);
  pinMode(GPS_ONOFFPin, OUTPUT);
  digitalWrite( GPS_ONOFFPin, LOW );   
  delay(5);
  if( digitalRead( GPS_SYSONPin ) == HIGH )
  {
     // Need to wake the module
    digitalWrite( GPS_ONOFFPin, HIGH );
    delay(5);
    digitalWrite( GPS_ONOFFPin, LOW );   
    delay(5);   
  }

Thanks,

Ken
TinyCircuits

37

TinyDuino Processors & TinyShields / Re: USB Shield died

« on: September 29, 2014, 08:45:46 PM »

Please contact us at info@tiny-circuits.com and we can discus getting a replacement for this.

Thanks,

Ken
TinyCircuits

38

TinyDuino Processors & TinyShields / Re: TinyDuino with NRF24L01 module

« on: September 29, 2014, 08:44:59 PM »

The CSN and CE pins can be connected to any digital output from the TinyDuino processor, so you can definitely hook this up to a TinyDuino.

Thanks,

Ken
TinyCircuits

39

TinyDuino Processors & TinyShields / Re: MISO, MOSI and SCK signals, which shields

« on: September 29, 2014, 08:44:14 PM »

MISO, MOSI, SCK are only available on Proto1 or on the Proto Terminal Block board (which can be used without the terminal blocks if size is an issue.

CSN and CE can be connected to any digital output, so you can definitely hook this up using Proto1.

Thanks,

Ken
TinyCircuits

40

TinyDuino Processors & TinyShields / Re: Unable to get 3.3V on Proto Board

« on: September 29, 2014, 08:40:11 PM »

I agree that it is confusing, Vcc is the power rail that should be used for powering external peripherals.  The problem is that generating 3.3V from the coin cell is inefficient and will cause it to drain faster.

You can using a low dropout linear regulator (LDO) on the Vcc rail to generate a safe voltage if you are using both the USB and a coin cell battery.  As you mention, a coin cell battery is below 3.3V (typically the are 3.0V nominal), so the output voltage from the LDO will be the input voltage minus the dropout voltage, and you can get LDO's with under 0.1V dropout voltage.  If you external device needs more voltage than this, you'll need to use a higher voltage battery or power supply (like a Li-Ion battery pack).

The power modes are described in more detail at the following link:

https://tiny-circuits.com/tinyduino_overview

I hope that helps explain it better!

Thanks,

Ken
TinyCircuits

41

New Product Ideas / Re: Double Sided Connector for TinyShield Proto Board

« on: September 04, 2014, 05:05:31 PM »

You should check out the Proto Terminal Block TinyShield which has a double sided connector, and can be used without the terminal blocks to basically do exactly this, and it's very easy to get access to the signals.

https://tiny-circuits.com/tiny-shield-proto-terminal-blocks.html

Ken

42

General Discussion / Re: How much is the new Audio TinyShield?

« on: September 04, 2014, 05:00:56 PM »

Hi Dwaine,

Thanks - it's available now on the main site for $19.95.  10% off if you get it this week. 

https://tiny-circuits.com/tiny-shield-audio.html

43

TinyDuino Processors & TinyShields / Re: On/Off Switch

« on: July 14, 2014, 02:18:20 PM »

Right now, there really isn't a good way to add a switch if you're using the coin cell, you pretty much have to remove the coin cell battery to disconnect this.

We are working on a new rev of the processor board and will have internal prototypes in the August timeframe, that removes the reset switch and uses a slide power switch instead.  Keep you eyes out and we'll make an announcement when this becomes available.

Thanks,

Ken

44

TinyDuino Processors & TinyShields / Re: Looking for intro docs / examples...

« on: July 14, 2014, 02:16:09 PM »

Hi Pat,

Sorry for the lack of documentation on the site, the new design ended up getting launched a bit early before the content was all up, we're getting it all up in the next day or two.  I've just posted a number of the tutorials to the Community site under Tutorials, but we should get the main site all done very soon. 

This is indeed an active project and we're coming out with a number of new products in the next two months, which is one of the reasons we got the new site up since our old site had some major issues on the backend for supporting many products. 

Thanks again for your patience - if you have any immediate questions, please send me an email at kburns@tiny-circuits.com.

Thanks,

Ken

45

TinyDuino Processors & TinyShields / Re: Unable to get 3.3V on Proto Board

« on: February 06, 2014, 06:17:10 PM »

Hi Manoj,

Sorry for the confusion - the 3.3V rail is there for legacy support and not directly generated from the TinyDuino board.  Instead, Vcc is the main power rail that you can use to power external devices, this is automatically selected between the +5V rail (such as when the USB is present), or VBatt when that is present.  If you are running a coin cell, we'd recommend powering the other device using the Vcc or Vbatt pin.  Note: If you are powering off the Vcc pin, if you plug in USB this pin will go up to 5V, so this may be an issue based on what you are connecting to.  If so, just stick with using Vbatt.

Regards,

Ken
TinyCircuits