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WINAVR: Where to find include files for my device?
Hi all,   I'm using WINAVR to write code for an ATtiny841. I'm looking for the include file that has the register definitions.   I'm looking in the WinAVR-20100110\avr\...
Tuesday, 18 August 2015 - 16:23
Programming hardware for ATtiny841?
Hello,   Can someone please tell me the recommended programmer to use for ATtiny841?   I see from the data sheet that the SPI pins are used, but can't find recommended...
Thursday, 16 July 2015 - 14:09
Correct spelling? Diode ORed or OR'd or what?
I'm proofreading a document and the writer is describing two diodes with the cathodes connected. What is the correct spelling for this term?   * Diode-ORed * Diode-OR'd...
Monday, 6 April 2015 - 15:18
Number of address lines in ATmega2560?
I'm taking an online course in embedded systems and we're using a development kit with the ATmega 2560. One of the questions the instructor asked is, "What are the sizes of the...
Thursday, 8 May 2014 - 13:06
writing machine code for ADD instruction
Hi all, Simple question for you, but I want to make sure I'm doing this right. I need to write the machine code for the following assembly code: ADD r5, r17 The 16-bit Opcode is:...
Monday, 3 March 2014 - 18:22
USB hub chip not getting recognized
Hi all, Anyone have experience with USB hub chips? I'm using a USB2517 7-port hub chip. My design is almost identical to the reference design on a demo board (I've added some ESD...
Friday, 4 October 2013 - 15:18
Danger in driving an RS-232 input while buffer is off?
Hello, I'm using a MAX3243E RS-232 driver. There is a use case where this receiver may be driven by an RS-232 signal while it is powered off. Is there any chance of damage to this...
Monday, 12 August 2013 - 18:43
USB: How to tell device that I have a CDP (Charging Port)?
Hi all, I'm working on a project where I need to provide a downstream port (USB 2.0) which supplies up to 1A of current. The supply itself (on the VBUS line) is no problem, and I...
Thursday, 18 July 2013 - 18:57
Bluetooth Options
Hi all, My boss has asked me to start looking to Bluetooth options. I started with TI since they seem to have a good development kit, but it may end up getting kind of pricy with...
Tuesday, 29 January 2013 - 18:37
Looking for EMI / RFI Cans (PCB mountable)
Hi all, It would seem like EMI cans would be easy to find, but I just can't find any off-the-shelf stuff. I don't want to pay for custom made; I'll design around what's available...
Monday, 22 October 2012 - 18:55
Oscillator works with BJT op amp, but not JFET based op amp
Hi all, I prototyped a simple oscillator using a BJT op amp (LM358) and it works fine. When I replaced the LM358 with a TL062 (JFET) op amp, the oscillator no longer works. Anyone...
Monday, 11 October 2010 - 20:12
EAGLE: Autorouter placing tracks inside via keepout area
Hi all, I'm autorouting a pcb in Eagle and tracks keep getting placed just inside the keepout area of some of the vias. See attached image. What the heck is going on? Suggestions...
Thursday, 16 September 2010 - 19:27

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