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simple powering from 3.3/5v & UART interfacing to 3.3/5v?
I'm just starting out with my first program for the xmega series and stumbled upon a problem. I'm powering and interfacing the AVR from the device that is connected to it as the...
Saturday, 8 October 2016 - 09:30
5 UARTs (half duplex) on a single AVR?
I need to be able to receive (Rx) UART from 4 different sources, merge them together, and output to a single Tx. All this has to be low power so I must use an AVR that works on...
Monday, 3 October 2016 - 10:25
phone -> wireless -> mass storage ... hoping for some ideas to get me going
My car's CD player has a USB port which accepts mass storage devices and is able to playback MP3 files and some other supported formats.   I would like to build an adapter...
Friday, 9 September 2016 - 20:41
No MIDI library for AVR ?!?
It seems that there are a few MIDI libraries for the Arduino but I would rather use something specifically written for the AVR with a small overhead if possible. I did manage to...
Sunday, 31 July 2016 - 17:45
Can't figure out the problem with UART
I'm using the very simple Peter Fleury UART library on an ATmega168A.   The following code is being used: #define F_CPU 2500000UL #define UART_BAUD_RATE 31250...
Monday, 11 July 2016 - 16:38
Trying to burn Arduino code using Studio 7
I have messed up the firmware on a 3D printer board and I'm trying to burn the AVR using the ISP header (usually being done serially but does not work now). I start a new project...
Sunday, 3 January 2016 - 19:20
Studio 7 (7.0.634) can't see Atmel ICE debugger
I've installed the latest Studio , when I connect the the Atmel ICE I can't see anything happening however the middle LED does light up so i guess the connection is solid. I've...
Saturday, 21 November 2015 - 12:29
BJT switch speed-up capacitor + base resistor calculation?
I'm trying to drive a small DC motor using PWM from of the AVR pins. Right now I have the following setup:   The PWM freq. is around 20KHz at the moment but I'll try to go...
Tuesday, 6 October 2015 - 10:00
Data Visualizer to display UART data when UART is software implemented.
I have some code running on a TINY AVR, I've written a simple Tx library and I used it for debugging - it's all software implemented with a timer. Is there anyway I could display...
Sunday, 4 October 2015 - 22:02
A bit puzzled about external RAM chips - which one to use?!
I know some AVRs come with interfaces for 64kb of additional RAM, however I don't see a problem using around 16 IOs for interfacing in a "dirty" way to an external RAM. I need...
Friday, 2 October 2015 - 17:59
A way to find all AVRs with PLL that enable high-speed PWM?
Seems like you can't search for this parameter on Atmel's website, anyone knows how can I possible gather a list without going over all the available devices?
Thursday, 1 October 2015 - 07:37
PID control over motor PWM
I had a previous post where I tried to drive a small motor with PWM. That did not go so well and I went out and ordered some P channel MOSFETS that will allow me to control the...
Thursday, 28 May 2015 - 10:53