Micro Journal - DIY Kit - 48 keys Keyboard PCB

Micro Journal - DIY Kit - 48 keys Keyboard PCB

PICOZX - Handheld ZX Spectrum 128k (PCB only)

$14.50
Availability: In stock
SKU
CQA0814HP
Weight
80g
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Bare PCB for PICOZX with ZX Spectrum emulation firmware and 2.8" IPS display

Hardware Specifications

  • Display: 2.8" IPS Screen delivering exceptional clarity with vibrant color reproduction
  • Processor: Powered by the versatile Raspberry Pi PICO microcontroller
  • Connectivity: Micro USB-C interface for data transfer and programming
  • Power: Integrated 18650 lithium battery charging circuit
  • Input: Comfortable 49-button QWERTY keyboard layout
  • Audio: AY sound chip emulation for authentic retro gaming audio
  • Dimensions: 173mm x 108mm

Use Cases

  • Educational Tool: Perfect platform for learning programming concepts
  • Retro Gaming: Runs MCUME multi-emulator platform for classic systems including ZX Spectrum, Commodore 64, Atari 800, and more (MCUME GitHub Repository)
  • ZX Spectrum: Specially optimized for ZX Spectrum emulation, which perfectly matches the 320×240 screen resolution (PICO ZX Spectrum by Fruit-Bat)

SD Card Setup Instructions

To properly configure your device, create the following directory structure on your SD card:

  • /zxspectrum/snapshots - Directory for storing .z80 game snapshot files
  • /zxspectrum/quicksaves - Dedicated folder for your quick-save states
  • /zxspectrum/tapes - Storage location for .tap tape image files

 

Modification Potential

  • With some modifications, the main board can be adapted to work with original ZX Spectrum membrane keyboards and cases for authentic retro builds

Component List for DIY Assembly

> Important: We do not currently offer component kits or individual parts. Only bare PCB sets or fully assembled units are available.

Essential Components:

Component Quantity Description Notes
Raspberry Pi PICO 1 Main microcontroller board x
DTS63K 50 Tactile switches (7mm height, 1N force) Any comparable 1N force switch will provide comfortable typing experience
SD Card Reader 1 Standard microSD card slot Required for retro computer emulation functionality
2.8" IPS Display 1 12-PIN 280×240 ST7789V Purchase options: IPS HP28010-D Option 1 or IPS HP28010-D Option 2
LPT1109DS 1 Piezoelectric element Audio feedback and sound generation

Electronic Components:

Component Quantity Description Function
BSS123 1 Transistor Display backlight control
10R 0603 1 Resistor Display backlight circuit
4.7kΩ 1 Resistor Display backlight bias
JS202011CQN (C&K) or MSS-2235 (NINIGI) 1 Side-mounted switch Power control (device will function without this, but recommended)
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