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Topic: flip flop it or 4051 it? (Read 3278 times) previous topic - next topic

CrossRoads

iteadstudio.com
10 boards up to 100mm x 100cm, $24.90 + shipping (~$5)
I can't tell if you used a ground plane on both sides of the board, will make routing easier.
Same for a schematic for review - can follow the fritzing picture to a point, then can't tell what it's doing.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Paranemertes

wow, that site is a great find. I looked forever last night and couldn't find anything for under 100 bucks. I've triple checked my connections and added 3 caps for where i hook in to the +5v. added the 100 and 10k resistors. added a few headers for the audio and button input. added those 100 nF caps at the ICs. ummm sorry just thinking on screen. anything else? Im using a power supply my dad got from Seattle City Light's junk warehouse, i have it hooked up to the +5, and it says it can provide up to 12 amps, which i think is a bit overkill, but hey it works. Do you think this is acceptable? (sorry for all the questions, im on a never ending quest for knowledge) So last minute checks? all good? thanks.
"It's Dr. Evil. I didn't spend six years in Evil Medical School to be called 'mister,' thank you very much."

CrossRoads

Nothing more to add until you create Gerbers.
Use nice wide traces for 5V power lines.
Use ground planes on both sides of the board.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Paranemertes

What is a ground plane? i extended the 5v traces that go to all the chips to 48 mils, but i don't know what a ground plane is...
"It's Dr. Evil. I didn't spend six years in Evil Medical School to be called 'mister,' thank you very much."

CrossRoads

Cover both sides of the board with a polygon (Draw:Polygon) and Name them GND.
This will cover everything that is not a signal with a ground plane.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Paranemertes

Fritzing didnt have that, but it did do this thing that it called 'ground fill', is this the same?
"It's Dr. Evil. I didn't spend six years in Evil Medical School to be called 'mister,' thank you very much."

CrossRoads

Can't tell picture is not high enough resolution. You also don't show the other side of the board.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Paranemertes

yeah sorry, fritzing displays everything on one layer, the yellow traces are the top and the orange are the bottom. I cant seem to get a nice high res pic, but this thing that i did, the ground fill, put a huge sheet of copper over the top and bottom that connect everything that needs to be to ground. it did this for both sides. this what your talking about?
"It's Dr. Evil. I didn't spend six years in Evil Medical School to be called 'mister,' thank you very much."

CrossRoads

Yes.
I can't see the traces that wrap the outputs back to the next input to make a shift register.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Paranemertes

are you talking about the pin 19 to 3, 18 to 4, and so on? cause they are there, just really hard to see because i have both layers showing and all of those connections are on the back, so the top obscures them.
"It's Dr. Evil. I didn't spend six years in Evil Medical School to be called 'mister,' thank you very much."

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