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Measure Vcc with ADC
Hi there, I need to know something. I'd like to measure the supply voltage of my circuit which equals with AVR Vcc. The supply is a non-rechargeable battery so the circuit must...
Wednesday, 13 January 2010 - 14:56
AT90USB647 SPI
Hi there, It's my first time using the ATMEL integrated SPI peripheral. I could use a software routine of doing this, but high clock rate is required. The point is to comunicate...
Wednesday, 30 December 2009 - 10:32
Static LCD display question
Hi there, I am using a static LCD (1017) and I control it using a simple microcontroller. The current BP frequency is 35Hz. If I am going to 15Hz, there is a flickering. If we say...
Friday, 11 December 2009 - 16:45
AT90USB647 low current consumption problems
I am trying to make a small testing loop, that will cause the controller to consumpt low current. As lower as possible. I have just connected the controller (AT90USB647) with only...
Friday, 11 December 2009 - 13:38
AT90USB647 and LM358 problem
Hi there, Using the AT90USB647 PINF[1] as a digital input (without pull up), I try to read a manchester encoded data that is coming from the output of an LM358 opamp. The opamp is...
Tuesday, 8 December 2009 - 12:01
LR6 ALKALINE AA battery question
Hi there, I am using LR6 ALKALINE AA batteries to supply my new design. After googling I found that this type of battery has a capacitance of 800mAh (aprox.). The battery's...
Monday, 7 December 2009 - 10:12
JTagICE MK2 clone question
Hi there, A friend of mine found this: http://enshop.avrvi.com/index_en... These tools are low cost. Could you please tell me your opinions? Thank you.
Friday, 27 November 2009 - 11:41
0-10MHz non-inverting opamp
Hi there, Do you know any opamp with the characteristics below: 1. SMD if possible 2. Dual or quad opamp in the same package 3. Will function as a non inverting amplifier 4....
Monday, 9 November 2009 - 14:32
GPS altitude accuracy???
Hi there, I would like to know which is the higher altitude accuracy I can get using a gps. Is there any other way to get altitude? Thanks.
Wednesday, 4 November 2009 - 13:43
compensate the relative orientation of a compass
Hi there, I would like to read and learn of how I could compensate the relative orientation of a magnetoresistive compass sensor, using an accelerometer. Is there any good link...
Wednesday, 4 November 2009 - 09:31
AT90USB647 USB voltage???
Hi there, I am designing a Battery based datalogger, that collects measurements from sensors and copy them in a file, whenever the maintainer connects a USB Flash Memory Stick at...
Tuesday, 3 November 2009 - 17:23
USB ESD protection
Hi there, The ATMELs STK525 kit has 2 suppressors at D+ and D- lines. These devices are SMD 0603 and are called: PGB0010603MR Do you know any similar devices that can be found at...
Tuesday, 3 November 2009 - 17:07

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