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How to verify bootloader is uploaded to correct memory block?
worked thanks. I didn't feel like trying to figure out intel hex today :) 
Tuesday, 4 August 2015 - 17:36
Schematic/details for STK600 power supply regulation!?
...just in case someone else has a similar problem there's a swtiching stepdown regulator w/ related resistors and inductors just to the right of the 90USB1287. It's a small SMD...
Saturday, 25 January 2014 - 08:01
Schematic/details for STK600 power supply regulation!?
...I did findthe schematic for the 2560 MCU card and I may need to wires directly to the copper on the back of the card (the firmware is done and uploaed already. What do I need...
Saturday, 25 January 2014 - 05:15
Code to have a switch toggle between four LED's
...ok thanks for the input! the four switches actually 'each' toggle four LED's.. so there's four LED banks (16) LED's in all... Your input helps, I think I can see what I need to...
Wednesday, 22 January 2014 - 11:16
Encoding input from 8-position switch to use 3 pins
Quote:Can you substitute a 3P8T rotary switch?possibly as long I can source one that's not significantly more than the SP8T
Saturday, 13 April 2013 - 00:14
Encoding input from 8-position switch to use 3 pins
The pic attached is basically what I'm proposing. Using a rotary switch and logic saves (5) GPIO and is cheaper than using an absolute encoder (incremental encoder is not an...
Friday, 12 April 2013 - 23:54
Encoding input from 8-position switch to use 3 pins
Quote:I don't know of any AVR with only one ADC! which AVR do you use?ATMega2560 I'm using all 16 channels.
Friday, 12 April 2013 - 22:53
Encoding input from 8-position switch to use 3 pins
Quote:Use an 8-position switch with BCD (octal?) output? That was the initial idea but absolute encoders cost more than the entire product (ok exhagerating but too expensive)....
Friday, 12 April 2013 - 21:19
Encoding input from 8-position switch to use 3 pins
Quote:Use a set of resistors and ADC, then you will need only one input pin.thanks. yes I considered but the onboard adc is already used.
Friday, 12 April 2013 - 21:16
Encoding input from 8-position switch to use 3 pins
Quote:Use a quadrature encoder?The industrial design and function calls for a switch w/ fixed positions as opposed to an endless encoder. I would use an absolute encoder but those...
Friday, 12 April 2013 - 20:55
tagging LED/transistor circuits on outputs to save I/O
Quote:You have some unusual component valuesThanks for the response. The component values aren't necessarily applicable I just through the parts in there to show the layout (I'll...
Friday, 1 March 2013 - 22:18
Boot sequence/initialization w/ LED's on SPI
Quote:Well, the answer is pretty obvious. You have about 80 spare GPIO pins that could control the /OE pins of the HC595s.Obvious to you ;) actually yes it is somewhat obvious now...
Friday, 1 March 2013 - 09:43

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