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Discussion Title Created date
extra vcc and gnd pins
hi, do *all* the vcc & gnd pins on the ucontrollers have to be connected? what happens if they aren't? surely they should be internally connected. I usually use the PDIP one...
Tuesday, 7 November 2006 - 19:34
float from uart
hi, i'm working with a trimble gps unit and it outputs data as ieee floats to the uart. how can i get the four bytes from the uart into a single floating point? i was thinking...
Tuesday, 17 October 2006 - 08:50
trimble gps
hi, i'm trying to get a gps working but to no avail... i hook everything up, power, gnd, rx & tx and... nothing it not a software issue. i've tried the windows app that...
Wednesday, 20 September 2006 - 09:51
strange SPI behaviour
hi, a have a gyro which has a spi interface and i'm observing some serious weirdness. whenever i give it a command (eg get rate) instead of giving me the rate it throws the...
Tuesday, 22 August 2006 - 10:57
AVR math performance
Hi, I'm building an IMU (wiki it :P, basically measure accel and turning rate to find position and orientation) and i need to perform single and double integrations as well as...
Sunday, 13 August 2006 - 11:32
DIY OBD-II for alfa156
hi, this isn't strictly mirco related but i figured one of you guys should know *something* my brother recently bought a 1999 alfa 156 and after some Mass Air Flow sensor trouble...
Friday, 19 May 2006 - 10:55
i2c eeprom with mega8
hi i am trying to use the i2c (twi) interface on a mega8 to read/write an external eeprom chip. the chip is an AT24C64A i have written the code following directions on both...
Monday, 24 April 2006 - 06:36
RFID with U2270B
hi guys, long time no post :) i'm working on an RFID system, using a u2270b (atmel chip) but the data sheet says that it is suitable for bi-phase and NRZ but I can't see how you...
Wednesday, 15 March 2006 - 10:12
using hdd motors
hi. one of my hdd's recently crashed, naturally i opened it up and found a bunch of stuff that make for really cool keyrings and that the platters are spun by a stepper motor....
Saturday, 11 February 2006 - 17:31
LCD - mega16 vs mega8515
i've written some test code for a generic 16x2 LCD which works exactly as expected on the mega8515 but the project i am working on has changed to a mega16. Why doesn't the LCD...
Thursday, 29 September 2005 - 06:19
How to design for ISP to be useable
ok here it is. i am building a device which will take the o/p of an accelerometer (ADXL202) and perform a double reimann sum integration approximation to find the velocity and...
Thursday, 15 September 2005 - 08:16
mul not simulating
why the heck does the mul instruction not simulate in AVR studion 4.11?!?!?! it treats it as a "nop" is there any known work around? thanks
Wednesday, 7 September 2005 - 10:43