7 pixel game console kits puzzle pixel game console 51 single-chip DIY welding practice parts Electronic DIY kit

Product information:
Kit name: Classic upgraded pixel game kit
Power supply: four 1.5V AAA batteries or USB DC5V [*Choose one, cannot be used at the same time]
Optional shell styles: transparent shell, blue shell, purple shell
8*16 dot matrix display:
Circular dot matrix: red display
Square dot matrix: green and blue optional
Maximum working current: about 5V@80mA (dot matrix fully lit, buzzer ringing)
Sleep current: 5V less than 1uA
PCB size: 70.1x98mm
Game difficulty:
H (high difficulty)
N (normal difficulty)
E (simple difficulty)
Note: When in the game, press the up and down keys at the same time to exit the game

Note:
DIY parts need to be welded and assembled by yourself, and you need to bring your own welding tools with detailed installation video tutorials.
The above dimensions are manually measured, there will be an error of about 1-3mm, please understand!