PCB Review: 2 layer ESP8266 Huzzah breakout board with SPDT switches.

[tylerssims]

EDIT: Current layout and schematic https://imgur.com/a/JtZtVVb

Hi all,

I'm looking for feedback on my board and design in general. It is the controller board for another PCB with 14-segment displays.

It is a breakout board for an Adafruit ESP8266 Huzzah module.  My board takes the Huzzah module, breaks the pins out to headers, adds an LDO regulator to the VBUS, and adds 4 push button switches to enable various pins.

I have also included two potentiometers configured as variable resistors. One is a variable pull up resistor, and the other is a variable pull down. They are each connected to an empty pin header and have no other input. I included them in case I need more resistance for my I2C bus or if my internal pull up/downs for certain pins are insufficient. I know it's not very practical but I thought it would make for quick troubleshooting and would be fun to build. Please let me know what you think.

https://imgur.com/a/kk4WuLr

The traces are mostly 0.5mm with 0.5mm vias.

Thanks!

[juma98]

TP5 is not connected.

[mariush]

You have plenty of room to put the RESET and WAKEUP buttons to the left of the other buttons. Move the IC1 more to the left, trace to SW3 can be routed above the bootstrap button and then between the other button...
You're using a 1117 regulator, probably the kind that's stable with ceramic capacitors on the output but who knows if some person copies your design and doesn't know 1117 aren't all the same... maybe consider using something else, personally don't like to use them.
Nothing really wrong with it, but that trace going from RV2 to the bottom trace at that angle bothers me. Maybe it could go directly down to that 3.3v pad instead of cutting over the silkscreen or whatever?

[bidrohini]

You can post your design here: https://www.pcbway.com/project/questionpublish
I think you'll get many more insightful reviews from there.