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Reflowing a previously soldered board
In a week or two I'm going to bring up a new board I've designed based on an ATMega32A.  It has a 5V regulator fed from an external 12V supply, 16 MOSFETS, an RS485 driver,...
Tue. May 15, 2018 - 03:36 PM
ATMega32A: JTAG vs. debugWire
I'm starting a new design with the ATMega32A.  The chip supports both debugWire and JTAG, and I'm wondering what the benefits and disadvantages of each are.  I'll be...
Sun. May 6, 2018 - 05:59 PM
Have you ever driven a 16x2 I2C LCD?
I bought one of these inexpensive 16x2 I2C LCDs on Amazon.  There's no documentation, but I figured how hard could it be to get up and running, since I've used UART-...
Thu. Mar 8, 2018 - 04:59 AM
Seeking I2C app note code
I'm working my way through AVR315 (now AN2480) and it references TWI_Master.c and TWI_Master.h.  Atmel used to offer source code along side the associated app note...
Mon. Mar 5, 2018 - 03:51 AM
Unable to connect to Atmel-ICE
I'm doing some ATMega328P development with Jumpstart C and Atmel-ICE on Windows 10.  Everything was working fine up until a couple of days ago when the IDE stopped being...
Fri. Mar 2, 2018 - 07:37 PM
This is a test - ignore
Sorry.  Testing my malware blocker (Malwarebytes) which hasn't been letting me post here without disabling the entire app, despite the site being whitelisted.   Ed.:...
Mon. Feb 26, 2018 - 06:33 PM
Unable to connect to AVRISP MkII with avrdude
I'm brand new to avrdude and trying to accomplish my first flash.  I'm on a Win 10 system.  Whether I try to write or verify, I get the same error:   avrdude:...
Thu. Feb 8, 2018 - 04:48 AM
How to flash an AT90S8515?
So I have a project from 2003 that I need to update.  It was based on the then state-of-the-art AT90S8515.  I still have the C code for it, and it still compiles, but I...
Thu. Feb 8, 2018 - 01:31 AM
Do crystals consume power?
I'm working on a design for a battery-powered, AVR-based clock.  It's my first battery-powered project so I'm drilling down into power consumption more than I usually do....
Sun. Jan 21, 2018 - 06:02 AM
Seeking RTC suggestion
I have a low-power display clock application.  I'd like to keep the MCU sleeping until awakened by a time update interrupt every minute, at which point it will update the...
Sat. Jan 6, 2018 - 06:38 AM
Seeking suggestions for terminals for quick-swap battery
I'm working on a project that's going be using one of these 12V batteries (dimensions are 7.07" L x 1.40" W x 2.42" H).  I'm going to keep it in a tray that allows it to be...
Fri. Sep 15, 2017 - 01:08 AM
Will AVR-ISP MkII source current to target?
I'm developing an Arduino project based on the ATMega328P.  I'd like to eliminate the bootloader to speed startup, which means programming via some sort of ISP.  Since I...
Wed. Sep 6, 2017 - 09:45 PM

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