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Pololu dual VNH5019 freewheel mode?
I got one of these plugged into my uno. I see in his ds that when enabled, the ina hi and inb lo makes it go cw, ina lo and ina hi makes it go ccw, both ins hi or both lo is...
Sunday, 12 May 2013 - 00:38
Formula for mixing xy joystick for left and right speed?
I guess this is a General Algorithm question but I'm running it on a genuine Atmel 328 so I'm sort of on topic. I read the x and y joystick channels and subtract the center bias,...
Saturday, 11 May 2013 - 22:20
Current boost output stage for L298?
I have an arduino motor shield with an L298. Great for up to 2 amps. Lets say I want to use 24V and about 8 amps. Is it as simple as hanging a couple of N ch mosfets on the outs...
Sunday, 28 April 2013 - 16:50
MISRA 2012 with C99 support
Howdy fellow software engineers. I just ordered my update of the MISRA guidelines from 2004 to 2012. I upgraded because I find the C99 inline variable declaration style somewhat...
Sunday, 14 April 2013 - 16:10
OLED SSD1306 controller contrast?
I asked this over on adafruit but no nibbles. Anyone ever programmed an oled using an ssd1306 controller? Looks like sendcommand 0x81 then sendcommand 0-255 should control...
Friday, 5 April 2013 - 16:17
Replace call foo; ret; sequence with jmp foo; ?
Can one of you gcc users look at some assy output and see if this is an optimiztion that gcc does?
Tuesday, 19 March 2013 - 19:26
TWI speed limit?
Hello friends. I have an I2C SSD1306 128x32 OLED graphics controller. It looks like the clk is speced at 400KHz. If the AVR is the master, and I try 800KHz, think it will work?
Tuesday, 19 March 2013 - 19:13
Attn Atmel: Need a mega628 on a 28 pin dip ASAP
My 328 is just chuckabluk full and I know I aint the only one.
Tuesday, 19 March 2013 - 00:31
Avrdude and eeprom?
O've been happily programming my aeduino uno using the bat file @rem file avrdudecom12.bat Mar 9 13 Bob G for oled12832 avrdude -c arduino -P com12 -b 115200 -p ATmega328P -e -...
Sunday, 17 March 2013 - 22:49
Feasible to make a small 4 char 5x7 dotmatrix?
I have a 3 digit led where ea digit is 7mm tall and 5mm wide. I'd like a 4 char display with ea char 5x7 dots. Maybe 6x7 so its 24x7. Anyone ever seen 1mm leds? Could the...
Thursday, 14 February 2013 - 20:44
Python on a mega2560
Sunday, 10 February 2013 - 02:21
Speed match 3 phase motor speed to car speed?
I remember a power lab where there were neon lamps across a 3 phase contactor and the lab dude said "Make sure you match the motor speed to the line exactly before you close the...
Sunday, 10 February 2013 - 00:47