Hope we are all keeping safe during these uncertain times!
A little bit of backstory on what I am trying to create, for some context. I have found that using breakout boards with the traditional Arduino Uno or Nano can sometimes be flimsy or oversized. For quick prototyping, a PCB is typically used to replace these wire connection with pin headers, but I am looking to take this a step further. My plan/idea is to have a ATmega32U4 as the central “Brain” with the “breakout board components” being on the same SMT Assembled PCB (E.g the ATmega32U4 have a OLED, Joystick and NRF24L01 assembled as one).
Currently I have based the “Brain” section of the board on the SparkFun’s Qwicc Pro Micro V2 (https://cdn.sparkfun.com/assets/4/4/f/2/a/Qwiic_Pro_Micro_V2_0_USB_C_Schematic.pdf).
I would greatly appreciate if anyone could suggest any changes or improvements to this base design, before adding the breakout board components.
ATmega32U4 Schematic.pdf (96 KB)