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Timer0 and _delay_ms
I am modifying an RFID project on an old ATmega128.  I added Timer0 with an interrupt and ISR to toggle a pin every 64 clock cycles to generate a 125kHz square wave.  In...
Tuesday, 9 February 2021 - 02:52
Split from: if (variable) {
I turned on pedantic warnings and it really doesn't like me using binary constants like 0x11000000 and says binary constants are a GCC extension.  What does that mean exactly...
Monday, 8 February 2021 - 22:14
Programming RFID tags
When I was first playing around with RFID I bought 3 collar tags from China that were supposedly programmable that I came across yesterday in my RFID drawer.  At the time I...
Monday, 20 July 2020 - 22:04
using JTAG pins
Is there any reason I cannot disable JTAG after I use it to flash my program, and then use those JTAG pins as gpio pins?  Obviously I cant debug any part of the program with...
Tuesday, 7 July 2020 - 20:01
Do RFID tags wear out?
My spouse noticed recently that my home made cat feeder door was closing on Simone while she was eating when it should have stayed open, and has for 5 years or so.  She has...
Saturday, 6 June 2020 - 19:39
key fob batteries
I was wondering how the battery in my Mini Cooper key fob has lasted more than 10 years.  I found a uTuber video showing how to replace the battery, which is said to be...
Friday, 22 May 2020 - 19:20
ejecting Atmel ICE
I have been just unplugging USB from my Atmel ICE, but I noticed in Windows 7 I have the option to eject it before unplugging.  Does anyone have an opinion about ejecting...
Wednesday, 13 May 2020 - 19:39
bizzaro interrupt behavior
I am using a Ti LED controller that has an XERR pin that according to the data sheet is an open drain transistor that is normally off that I am pulling up with a 100k resistor....
Sunday, 3 May 2020 - 22:50
Pi driven relay
A friend of mine is driving a low current relay coil directly with a gpio pin on a Raspberry Pi.  The circuit is Pi pin to relay coil + pin.  Relay coil - pin to ground...
Thursday, 12 March 2020 - 02:56
frozen batteries
I store new batteries in the freezer.  A friend of my wife's said she had a bunch of Duracell AAA dated 2022-2025 in the freezer that leaked.  She said she got them from...
Sunday, 5 January 2020 - 18:55
Atmel Studio 7.0.2389
I just upgraded to the latest version of AS7 - Version 2389.  Has Anyone had any trouble with this version.  I'm hoping it fixes one of the display bugs I keep seeing.
Wednesday, 23 October 2019 - 15:48
Win 7 updates and AS7 slowdown
I installed the recent Windows 7 updates and now it take about 5 minutes to open an AS7 project, and a build that used to take 10 seconds now takes much much longer. ...
Sunday, 15 September 2019 - 01:41