RKade Mini by DMRadford

Last crawled date: 3 years, 1 month ago

This handheld console runs a full sized Raspberry Pi (2, 3 or 3 B+) and gets 4-6 hours of battery life depending on which Pi you use, and which games you're playing.
Parts list:
Raspberry PiUSB JackBattery Charging CircuitAdafruit ItsyBitsy 32u4 - 5VPSP Joystick3v to 5v 3a Boost Converter2 Position Slide Switch18650 Batteries30 AWG wire
24 AWG wire (can use wire pulled from Ethernet cables)Proto Board PCB6mm Tactile Buttons
Micro USB cable to chop up.
Software:
Retropie 4.4juj fbcp-ili9341 SPI drivers
Wiring:
Spi Screen
Display--------Raspberry Pi
BL--------------pin 12 (GPIO 18)
SCK------------pin 23 (GPIO 11)
MISO----------pin 21 (GPIO 9)
MOSI----------pin 19 (GPIO 10)
CS--------------pin 24 (GPIO 8)
RST------------pin 22 (GPIO 25)
D/C-------------pin 18 (GPIO 24)
VIN-------------pin 17 (3.3v)
GND-----------pin 20 (GND)
Buttons
Shared ground across all buttons and joystick. Use extra protoboard pins to make all of the grounds common.
Buttons are wired to pins 0-13 and A2. Joystick axies are wired to A0 and A1.
Tricks:
I used electrical tape to hold the battery leads in place during assembly. The risers in the prints will apply the pressure needed to make contact.