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Discussion Title Created date
Auto off circuit
I am using the auto off circuit as shown on the attachment. I came up with this, and it seems to work fine, but I am wondering what others use to achieve auto off, and whether...
Mon. Oct 24, 2016 - 01:43 AM
Programmer for review and debug
I am looking for someone to review and assist in debugging some AVR software. It is written in C and intended for a Mega 1284P and AS7. A non-disclosure agreement will be required...
Wed. Oct 5, 2016 - 05:49 PM
Boost regulators
My devices are portable, battery operated, and I have typically used 9v alkaline or 2S, 3S lithium batteries and linear regulators. On the latest device, I decided to try 2-AA...
Sun. Jul 10, 2016 - 09:57 PM
Globals in C
I have a confession to make. I use global variables all the time. I know, everybody says that its bad form, not proper OO programming, makes for difficult code maintenance, sets...
Tue. May 17, 2016 - 10:47 PM
China vendor for led's
I am looking for a Chinese vendor for ribbon led's (strip led's). I need to buy them in bulk in long (100m-1000m) continuous rolls. All I see advertised is 5m rolls. Does anyone...
Sun. May 15, 2016 - 09:21 PM
reading the Disassembly
Would someone please explain what the two hex numbers (or four) after the line numbers in the disassembly refer to? In the disassembly they are separated by periods. In the .lss...
Sat. Feb 27, 2016 - 09:28 PM
fan impeller speed sensor
I have an application where I need to sense the rotational speed of a small low inertia fan impeller (<25mm) mounted inside a tube housing. The impeller is driven by air...
Thu. Dec 3, 2015 - 10:30 PM
AVR equivalent for PIC function
I am attempting to port the following PIC C:   void toBCD(int16 val,int8 * outBuf)  {    //converts 16bit value, to five BCD digits. Tries to do it fairly...
Mon. Oct 12, 2015 - 02:36 AM
PIN register question
I was under the impression that the PIN register in a megaAVR was just a stable reflection of the logic status of the corresponding PORT pin. However, I encountered a situation...
Tue. Sep 22, 2015 - 04:38 PM
6.2 debugging issue
I notice that under 6.2 (M1284P and JTAG) if I stop execution and hover over a variable is gives me a number where it used to give me the appropriate alias.   For example, I...
Tue. Apr 21, 2015 - 08:42 PM
Memory corruption
Consider a micro controller based device in which the developers have placed a relay on the 12v power supply. The uC has many subsystems and numerous I/O lines in close proximity...
Sun. Oct 19, 2014 - 04:47 PM
sei() causes program to leave infinite loop
Perhaps someone here can help me understand what is happening with the following code. This is running on a ATMega 1284P and AS6.1. The tool is an AVR1 using a JTAG connection to...
Fri. Jul 11, 2014 - 05:23 PM

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