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Bench multimeter?
Is the VC8045 worth the price? http://www.ldbmart.com/betydimuv... Why is it so big? It's 10 x 9 x 3 inches. Or if prefer, 260 x 220 x 82 mm. What's in there that takes so much...
Monday, 18 May 2009 - 14:18
ExpressPCB footprint widths
The ExpressPCB footprint for a 0603 chip is slightly narrower than the chip and the overall length is only slightly longer than the chip. Panasonic's datasheet says the narrower...
Friday, 24 April 2009 - 00:38
ExpressPCB footprint mistake?
I think there is a standard for the pin numbers of the SOT-89. Am I wrong? Every datasheet I've looked at with SOT-89 packages number the pins in the same way. The SOT-89...
Wednesday, 22 April 2009 - 23:23
ExpressPCB is lacking in components and footprints
I wanted to add an SMD schottky and found there is no Schottky symbol and no SOD-523 footprint. Actually no SOD footprints at all. This particular lack is not a big problem for...
Monday, 20 April 2009 - 03:17
ExpressPCB files for simple mega644 board?
Is there a "starter" set of files for someone who wants to design a PCB for the mega644 in an SMD package? A board that blinks an LED would be nice. :) I'm thinking of a well...
Sunday, 19 April 2009 - 23:14
Studio doesn't like my AVR's signature.
The datasheet agrees with my Atmega329P, but Studio says the signature is wrong, and Studio is always right. Isn't it? :) Apparently Studio thinks the 329P has the same...
Saturday, 28 March 2009 - 22:17
Peter Fleury's bootloader
I installed the bootloader and it works well. It seems that one of the comments is wrong.Quote: AVRdude: Please uncomment #define REMOVE_CMD_SPI_MULTI when using AVRdude....
Tuesday, 24 March 2009 - 14:15
How to connnect and unconnect JTAG ICE to board?
It appears the way to plug in the cable is to power off the target and the JTAG. Then plug in the cable. Then power on the JTAG. Then power on the target. I base this on...
Tuesday, 24 March 2009 - 13:37
JTAG EESAVE warning
Whenever I start debugging with JTAGICE mkii, I get a warning message that says: "The device's EESAVE fuse is currently programmed, but the project setting does not specify that...
Sunday, 22 March 2009 - 12:44
Solder resist?
What is that green stuff that coats the traces on printed circuit boards? Where can I get some? I sometimes have a need for something to coat adjacent copper and adjacent small...
Saturday, 21 March 2009 - 12:05
PC ground
I want to power an AVR from a fan header on a PC motherboard. This header has +12 volts and "ground". Of course I'm using a voltage regulator to provide the correct AVR VCC. I...
Saturday, 21 February 2009 - 21:49
Atmega digital pin input capacitance?
I see nothing in the datasheet. I've looked at the old CMOS logic chips and they have an input capacitance around 10 pf. I'm guessing the Atmegas would be less than 100 pf. I'm...
Friday, 23 January 2009 - 17:22

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