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Device won't work under the control of the debugger
I have a debugging issue that you guys may be able to shed some light on. The device is an audio player on a custom PCB. It receives commands from a radio link via UART and plays...
Wednesday, 22 May 2019 - 21:16
AS7 fails to enter debug mode
This one has me stumped. I am trying to debug a new project using JTAG and ICE. The device is a 1284P. I can contact the device and program the fuses, using the Device Programming...
Thursday, 21 February 2019 - 01:07
Finding the end of an mp3 file
I have developed an audio system for mobile robots that allow them to vocalize recorded speech. It is a simple system that uses mp3 files on flash memory that are spit out to a...
Thursday, 17 January 2019 - 18:47
USB power from mains
I started using a 1284 xplained board yesterday to provide a USART test signal to a new project. While getting it going, I discovered that it's powered by USB. Having no PC USB...
Wednesday, 21 November 2018 - 17:41
Can I use my AVR ONE in an AS7/Arduino project
I have never messed with Arduino before, but I am dipping my toe in on a robotics project where the code is available and written for the Arduino Demilove (AVR328P - Botboardino...
Sunday, 28 October 2018 - 21:26
Switching circuit artifact
I have a simple switching circuit intended to swap a pair of 5 volt pulsed signals (PPM) between two destinations. Both signals are 60 Hz, but with different pulse widths. A...
Friday, 13 July 2018 - 21:25
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...
Monday, 24 October 2016 - 01:43
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...
Wednesday, 5 October 2016 - 17:49
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...
Sunday, 10 July 2016 - 21:57
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...
Tuesday, 17 May 2016 - 22:47
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...
Sunday, 15 May 2016 - 21:21
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...
Saturday, 27 February 2016 - 21:28

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