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Identify this device
Can anyone help me identify this device. It looks like a QFN32 package labeled SILAB F541 ACL09F 1715+. I have looked at the Silabs site but I can't find anything there to match...
Tuesday, 9 June 2020 - 19:15
Serial Communications
Hi guys, I am planning a forms based windows console application (C#) to communicate via serial coms with the UART on an ATMega. I have attached a TTL to USB interface module...
Thursday, 21 May 2020 - 16:14
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

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