Hello,

As said, the middle pin of the LM2937 is connected to the tab and should be treated as ground connection.
This goes for all the available packages:



Bertus

 

Double check the pinout of LM2937. I think you still have it wrong.
1 - INPUT
2 - GND (TAB)
3 - OUTPUT

Yup. Fixed. Also, made the servo take the regulated voltage instead of the unregulated to allow for more power supplies:

 

OP has selective reading. I mentioned widening them in post #6.

It's not that.. I don't know what that means. This is my first design and all

 

It's not that.. I don't know what that means. This is my first design and all

Go to the BOARD window and click DRC. Under the SUPPLY tab, uncheck "Generate thermals for vias." Also, set THERMAL ISOLATION to 0 mils.

 

Go to the BOARD window and click DRC. Under the SUPPLY tab, uncheck "Generate thermals for vias." Also, set THERMAL ISOLATION to 0 mils.

Didn't change much I don't think:

 

Did you rerun the RATSNEST to regen the polygons?

 

Did you rerun the RATSNEST to regen the polygons?

I did. This is it with thermals checked, and 10mil isolation:

All my other images appear to have been when it was unchecked

 

There's another place where thermals can be set. Highlight the ground plane on the back and select PROPERTIES in the pop-up menu. Unclick THERMALS, then rerun RATSNEST.

 

There's another place where thermals can be set. Highlight the ground plane on the back and select PROPERTIES in the pop-up menu. Unclick THERMALS, then rerun RATSNEST.

Yeah, i'm confused.. I did that, even grouped all and change thermals off. Nothing is any different. What is supposed to happen?

EDIT: Oh, now I see. It removed the cross from the GND via's. So what is the advantage of that?

 

It removed the cross from the GND via's. So what is the advantage of that?

It makes your ground connections much better.

 

Thanks for all the help again. Made a couple changes, added a pull down and limiting resistor. Also double checked pin/pad sizes on all the datasheets. I'm going to send it off to get made if nobody else see's any issues:

 

It's been interesting reading through this lot. And it probably explains why I always design my PCBs from scratch, using a graphics program, rather than using Eagle or any of the other deisgn tools. Yes, I know it probably talkes me a lot longer, and I wouldn't use this technique for a board involving hundreds of components, but for most of the stuff I design for microcontrollers, using a few dozen components, I like the control it gives me!

Pick holes in this one if you like! It incorporates a microcontroller, two constant current drivers, an ESP8266 module, RTC, EEPROM etc. And it works!

 

Capacitor polarities?
LED polarities?
Bypass Caps?
Any test points you want to make/mark?
Put a name/version on the silk screen?

Bypass caps are installed close to the power pins of IC's and are typically ceramic. Usually follow the manufacturer's suggestion in the datasheets.

Comment about holes.
They do allow you stuff/troubleshoot the board by using standoffs or feet.

 

It's been interesting reading through this lot. And it probably explains why I always design my PCBs from scratch, using a graphics program, rather than using Eagle or any of the other deisgn tools. Yes, I know it probably talkes me a lot longer, and I wouldn't use this technique for a board involving hundreds of components, but for most of the stuff I design for microcontrollers, using a few dozen components, I like the control it gives me!

Pick holes in this one if you like! It incorporates a microcontroller, two constant current drivers, an ESP8266 module, RTC, EEPROM etc. And it works!

There are way too many advantages of using PCB CAD software to list here.

 

Hey guys, just wanted to give a quick update. I had the boards fabricated by oshpark last week and I hand soldered the components myself. Every board works perfectly, with zero issues.

Thank you all so much for the help and guidance!

 

I'm glad that everything worked out for you. There are what I would call mistakes on your board, but being that it is so simple, they will not hurt you. One mistake that I am talking about is the lack of ground flood on both sides of the PCB. This additional ground really does help suppress circuit noise and is just too easy to add to give you that extra protection. If you are doing a board with RF aboard, then it really is a neccessity.