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481  Using Arduino / Project Guidance / Re: Operating Three Motors Independently on: September 26, 2013, 01:02:18 pm
An RTOS is a possible solution. Each motor controlled by a separate task.. The control over serial run in an another task. Have a look at NilRtos here in the forum.
482  Development / Other Software Development / Re: New fork of the IDE on: September 25, 2013, 11:50:14 am
Quote
Instead, copy the core to a new folder, change it's name in the core.txt file, and have yourself a custom core all to yourself.
Hmm, so:
1. copied "arduino" core to "my_arduino"
2. changed "name" in /my_arduino/core.txt to name=my_arduino
3. selected "my_arduino" core in Hardware->Cores drop down menu..
Cool smiley
PS: if the name in the core.txt does not match the folder name, the uecide freezes at the welcome banner, and it must be killed with the task manager's help..
483  Using Arduino / Storage / Re: Internal EEPROM cause arduino to freeze on: September 25, 2013, 11:07:11 am
Show us your sketch.
PS: Arduino nano 2.x has got only 512b eeprom.
484  Development / Other Software Development / Re: New fork of the IDE on: September 23, 2013, 12:50:35 pm
Another "issue" I am thinking about is how to upgrade via plugin manager, when I did several changes in my core files..
485  Development / Other Software Development / Re: New fork of the IDE on: September 23, 2013, 12:02:56 pm
It works, when you put cursor or click on a fresh opened text. If you do not touch the newly opened text, it does not highlight - it just jumps to the bottom of the text.
486  Development / Other Software Development / Re: New fork of the IDE on: September 23, 2013, 11:30:01 am
Under XP it does not highlight with ctrl-a (or clicking select all), it does copy all with ctrl-a and ctr-c and it does paste all.
487  Development / Other Software Development / Re: New fork of the IDE on: September 23, 2013, 07:32:42 am
0.7.4g - when clicking on "select all" the text does not highlight..
488  Using Arduino / Project Guidance / Re: Connecting an NXT to an Arduino Uno over Bluetooth on: September 21, 2013, 03:58:20 pm
There are cheapo serial/BT modules supporting Master/Slave available. So you need 2 modules - first set as a Master, the second as a Slave. They will create a transparent serial connectivity. Provided the NXT has got a serial i/o support it could be easy..
489  Using Arduino / Storage / Re: SD Card - how to reduce the power consumption? on: September 21, 2013, 02:10:26 pm
It compiles fine here.. Do you have SdFat library installed?
490  Topics / Science and Measurement / Re: filter library on: September 21, 2013, 02:03:56 pm
I've been using this page to draw the filter, to get coefs and source code for FIR filters:

http://t-filter.appspot.com/fir/index.html
491  Using Arduino / Microcontrollers / Re: Running Uno at 10 MHz question on: September 21, 2013, 08:24:27 am
..to run both arduino and PLL clock with the same xtal..
492  Using Arduino / Storage / Re: SD card problems on Yun on: September 20, 2013, 02:46:37 am
Code:
  pinMode(10, OUTPUT);

  if (!SD.begin(4)) {
493  Using Arduino / Storage / Re: SD Card - how to reduce the power consumption? on: September 20, 2013, 02:36:51 am
500uA might be ok - it depends on the actual card used. Check the sdcard's chipselect is high when idle.
You may disconnect the card fully with a high-side switch (ie. pmosfet).
494  Development / Other Software Development / Re: SerialPort.h and "Serial" on: September 19, 2013, 11:21:07 am
It helped, thanks!
495  Using Arduino / Project Guidance / Re: Is it okay to read RTC continuosly? on: September 19, 2013, 07:35:31 am
An RTC shall not loose time when being read. Some RTCs loose a second when there is more than 1 second between starting I2C transaction and the finish of the I2C transaction (as the internal time counters increments are stopped when I2C bus is in action). Such RTCs include an 1bit register where a 1second transition, if any, is stored and processed afterwards (when the second tick occurred during I2C transaction). So unless "the act of reading via I2C" does not last for more than 1 second it is safe (for reading time and date from an I2C RTC you do not need more than 0.5msecs).

There is Time.h library however, which includes a mechanism, where the RTC is used for the syncing of the "system time" at specific periods only, ie. every 10minutes.
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