18 February 2020 EDIT:

1. I just corrected a small mistake on the NRF24L01 part. Some small traces were missing. (Missing connections between CSN pins and MOSI pins.)
2. I rotated the Main Board pins so that the Usb plug on the board is not facing the PS2 joystick.

New Gerber file uploaded.

This is a breakout board that can be used to replace the classical breadboard. Just solder the headers and place components on the board. Then connect the components using DuPont Cables.

The breakout Board can fit the following components:

1.    Teensy 4.0 (including the bottom pins and ribbon cable connector)

2.    Teensy 3.2

3.    Arduino Nano

4.    Arduino Pro Mini

5.    Arduino Micro

6.    Arduino Pro Micro

7.    STM32F103C8T6

8.    LGT8F328P (Arduino replacement)

9.    Teensy Audio Adapter

10.  NRF24L01+

11.  MPU6050

12.  PJ313B (TRRS 3.5mm Jack socket)

13.  1206 package resistors

14.  1206 package capacitors

15.  SOT23-3 parts

16.  SOT 23-5 parts

17.  SOP-16 parts

18.  TO-252-2 parts

19.  B103 volume potentiometer

20.  DPDT Switch

21.  Normal Button

22.  RJ45 socket

23.  PS2 analog joystick

24.  TP4056 charging module

25.  0.96” Oled

26.  2.42” Oled

27.  3 mm Leds

28.  HC-05 Bluetooth