John Warren, the most advanced demo maker for a portable, handheld, pocket Raspberry Pi Zero 2 w mini laptop?

Last Updated on April 6, 2023 by pg@petergamma.org

  • Part ONE
  • 4.3 inch display
  • runs Raspberry Pi Os Bullseye (not optimal)
  • cable connection work, everything works
  • Puffin browser
  • two speakers are coming out of the audio port
  • built-in audio amplifier
  • 3 volts from GPIO pins
  • not overclocket, but strong headsink installed to do so
  • fan power from GPIO pins
  • GPIO pins have to be soldered on RPi zero 2 w, which is pretty easy, but takes time.
  • voltage from keyboard from the GPIO pins
  • battery pack with power switch integrated, 5 volts
  • charge the battery via micro usb input
  • charge while using it, unusual (but not with external powerbank)
  • total costs 40 to 50 USD, maybe less
https://youtu.be/UVALlkI_s0M

Part TWO

  • Version two of the developement.
  • screen stopped and burned.
  • replaces screen by another one, for details see video.
  • new speakers, second hand from laptop.
  • Bluetooth receiver and amplifier
  • activity light from GPIO (how?)

Part 3.

  • We have reviewed part 3 before here:

  • We studied these three parts of the instruction
  • Ist not possible to build a better device with components which are easier to handle
  • The case is very big, do we need it?
  • Audio is compliated, is it necessary?
  • Why not to choose a somple power bank as power source?

– Did the develper give up this instruction?

  • Did we really learn something new from the instruction, exept from that it is possible to build a mini laptop from a Raspberry Pi zero 2 w?
  • Could we not improve this setup? It uses partly old components from other devices.
  • Will will do this as much as possible also.

How can we improve this device, write your suggestions in the comments below: