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Noob questions on AT32UCL064
hi, Just some basic questions, and pardon, even browsing through the spec at http://www.atmel.com/dyn/resourc... , I still don't get the below. 1. The spec keeps saying 32Khz...
Sunday, 7 August 2011 - 20:05
Oh, lordie! Where is pin #1?
Hi, I have an 74HC595 (SMD format) from ST Electronics. See picture. The manufacturer does not make the part with a dot or a notch to help locate pin #1. Given the attached...
Saturday, 6 August 2011 - 22:57
How would I make (a simple one) 50ohm antenna?
Hi, I am trying out a project with Sub-Mhz RF transceiver, that is, 433Mhz, 868Mhz, or 915Mhz. (I want to experiment with 433Mhz.) I bought some MRF49XA ICs (ww1.microchip.com/...
Saturday, 23 July 2011 - 00:55
R2R Ladder 8-bit DAC question
Hi, I am able to create an 8-bit R2R ladder 8-bit DAC using 1% resistors. See attached image, which I got from the site http://ikalogic.com/dac08.php Below are my findings for...
Tuesday, 28 June 2011 - 04:22
The histories of 1.8V/3.3V/3.6V ?
Hi, I've always wondered by such "odd" voltages? For example, it so convenient to have 3.0V, basically two AA or AAA 1.5V batteries, but why 3.3V? I understand ICs have been...
Tuesday, 21 June 2011 - 17:22
Please take a look at the power and ISP wiring
Hi, I am making a device that use 2 AAA batteries (3V) total. It also has the ISP pins for programming the uC. When I program the uC, I will take out the batteries and have the...
Monday, 20 June 2011 - 05:20
AVR GCC supports ATTINY4/5/9/10?
Hi, Pardon if this is a FAQ, but I just checked all the targets supported by gcc version 4.3.2 (WinAVR 20090313). I don't see that it supports ATTINY4/5/9/10 micros. Perhaps...
Sunday, 19 June 2011 - 17:01
Plz explain more on the two diodes in the below schematic
hi, I don't understand fully the two diodes connected to the 36khz and 38khz IR receivers in the schematic shown at the page http://www.sbprojects.com/projec... Could someone...
Thursday, 16 June 2011 - 05:20
Led Matrix question with the TLC5920 led driver
Hi, I am able to drive a common cathode bi-color led matrix using HC595s for the cathode pins and using the HC138 for the anode pins. Please see attached image of the common...
Wednesday, 8 June 2011 - 05:44
40Khz IR receiver covers all?
Hi, One basic question with IR protocol decoding. Looks like well-known remote/IR controllers (e.g., for TV by Sony, Sharp, etc.) have protocols that are defined for 36Khz, 38Khz...
Monday, 6 June 2011 - 06:54
Consistently getting a stable 4.26V for a 3.3V LDO :-(
Hi, I bought some TO-92 pieces of ST Microelectronics' L78L33ACZ, a 3.3V LDO. This LDO has 3 pins, Vin, GND, and Vout. For Vin, I feed in 5V from the my USB and is bypassed with...
Tuesday, 10 May 2011 - 03:35
Can't seem to decipher problem with inline assembly
Hi, I have the below program, trying out inline assembly. #include void asmCode(); int main (void) { asmCode(); return 0; } void asmCode() { asm volatile( "...
Monday, 2 May 2011 - 05:08

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