littlespleen.github.io

Raspberry Pi 4 powered laptop

Main

Keyboard and trackpad

Keyboard and trackpad

LCD controller M.NT68676.2

LCD controller

Booting the thing

Youtube link

Todo / Open issues

  1. Have not yet connected the old USB ports / Ethernetport. Have to make room for a USB hub
  2. Add second Lithium Cell
  3. Need to connect the speakers to the audio out on the lcd driver board.
  4. Charging USB-C is working but need to switch of the RPI casue the power drops too low.
    • Also when USB-C is connected the powerbank IC shuts the power for a short time.
    • Will add some capacitor/batttery to survive a charge cable connect
  5. Micro SD extender is glitchy not reliable.

List of hardware components

Sorry for swedish links

powerbank

https://www.amazon.se/ADDTOP-Powerbank-kraftf%C3%B6rs%C3%B6rjning-kompatibel-Nintendo/dp/B088BZW3SD/

voltage booster

https://www.amazon.se/gp/product/B07BVWV74J/ref=ppx_yo_dt_b_asin_image_o03_s01?ie=UTF8&psc=1

sd micro extender

https://www.amazon.se/gp/product/B07KPTXMX8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

lcd controller

https://www.aliexpress.com/item/33050193314.html?spm=a2g0s.9042311.0.0.426a4c4dWtuSUb

usb-c breakout

https://www.electrokit.com/produkt/anslutningskort-usb-c/

1

Early progress

2

Cutting the main logicboard to use USB ports and ehternetport

3

Powerbank internals

4

Early test

5

6