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Topic: Forgoing voltage regulator (Read 2 times) previous topic - next topic

CrossRoads

I bought a bunch recently myself. They have pretty good prices.
I don't know who in the forum identified them as a source.
Great price on MAX7219s also.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

bratan


What is HT1632? Is there a reason not to connect all Vcc & Gnd pins?


I couldn't connect them at first, but thanks for pointing it out! I kept trying and finally was able to fix part. Looks like I didn't align it correct in the library design (had to Ctrl+click and do .1" grid). Now I'm able to connect all wires.

Ok here's final-ish version of my board, hopefully I didn't screw up badly somewhere :)  No ERC/DRC errors. I added Diode and also couple of SMD parts (LED2 on pin PD3) for "hello world" blinker...
I used autoroute with 10mil size. Then I manually beefed up 5V lines, and moved some that were too close to others.  Ready to send it to OSH Park :)
One strange thing is that left side always curves in when I do Ratsnest, but it doesn't matter, I made PCB with this "defect" before via OSH and it worked fine...
Xronos Clock - A talking arduino based alarm clock is now available. Check out xronosclock.com for pictures, source code, schematics, and purchasing info :)

CrossRoads

Looks like you're still missing a GND on HT1632 if the name on the symbol means anything.
On the board, why is LED2 and R6 (330K? will the LED turn on?) so much different than LED1 and the other resistors? Just wanted the soldering challenge?
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

bratan


Looks like you're still missing a GND on HT1632 if the name on the symbol means anything.
On the board, why is LED2 and R6 (330K? will the LED turn on?) so much different than LED1 and the other resistors? Just wanted the soldering challenge?

Missing GND? Hmm I don't see it :(
I have GND1,2,3 all connected to GND.
Oops with 330K, I meant 330 Ohm, thanks for noticing, I just fixed it :)  I got value from LED resistance calculator. I think everything up to 1K should be ok, it's ok if it will be dim.
I never worked with SMD parts, and don't have any right now. LED2 is optional, but LED1 shows that power is on. I guess I might as well replace it too :) Gonna dig thru my junk pile, maybe I can desolder some SMD LEDs and Resistors from various printer/networking equipment I have.
Xronos Clock - A talking arduino based alarm clock is now available. Check out xronosclock.com for pictures, source code, schematics, and purchasing info :)

CrossRoads

HT1632 Pin 8 says GND above it, that's why I asked.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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