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Please contribute PCB layout pointers
Do you mean resistors between the switch and the MOSI/MISO pins so that the path from pins to programmer has less resistance?
Monday, 12 May 2008 - 20:09
Please contribute PCB layout pointers
Ok, getting close to a design I think is worth trying to etch. I have swapped out a few components: Switched to a 16pin (8x2) header for the LCD. I also added a transistor and...
Monday, 12 May 2008 - 02:42
Please contribute PCB layout pointers
barnacle wrote:C3 is only 0.2" away from the power pins... I wouldn't expect that to be a problem. It is .2" away from AVcc but Vcc is on the other side of the chip, quite a long...
Saturday, 10 May 2008 - 23:07
Please contribute PCB layout pointers
Wow, nice work Neil! I'm not familiar with ground planes, I guess something I need to read up on. What tool do you use in Eagle for that? The pads on the switch should be correct...
Saturday, 10 May 2008 - 16:56
Please contribute PCB layout pointers
ocnek wrote:Are your vias square for a reason? That's how they came out when I switched from Bottom to Top layer while laying the trace. Would it be better if they were round? I...
Friday, 9 May 2008 - 22:03
Please contribute PCB layout pointers
You're right, the AVcc pin was not connected to the net. I deleted and redrew that net at least 5 times thinking that was the problem..... grrr. Anyway, I'd love to see your take...
Friday, 9 May 2008 - 21:29
Please contribute PCB layout pointers
fleemy wrote:You need to use the 'Net' tool, to connect pins, not the 'wire' tool. Yes, I did use the net tool to connect the AVcc pin on the schematic. The problem occurred in...
Friday, 9 May 2008 - 18:33
Please contribute PCB layout pointers
dl8dtl wrote:You still neglected to connect AGND and AVcc. Don't do this, you are risking to kill your ATmega8. At the minimum, your port C will be rendered unusable because...
Friday, 9 May 2008 - 16:35
Please contribute PCB layout pointers
Here's the newest revision:
Friday, 9 May 2008 - 06:37
Please contribute PCB layout pointers
UNiXWHoRe wrote:LM2574, Input 4.75v-40v, output 5v, in PDIP-8 package, 1.67$CDN each... ;) http://search.digikey.com/script... Yep, that's the part that I'm looking at. If you...
Friday, 9 May 2008 - 06:20
Please contribute PCB layout pointers
To tell you the truth, this is just an arbitrary project for me to test the waters of at home PCB etching. That being said, I'm always happy to learn a better way to do things. I...
Friday, 9 May 2008 - 01:15
Please contribute PCB layout pointers
glitch wrote:barney_1 wrote: The current draw of the system should remain under the 100ma that the 78L05 can put out. But what is your input voltage. While you may not be...
Thursday, 8 May 2008 - 21:30

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