Builty TonexOneController
super glue 
attach dc female plug 
soldering single strand wires 
smoll 
and another 
bend it 
attach 
and 
mount inside 
close lid 
more is better (9V to 5V buck convertor)
links:
https://github.com/Builty/TonexOneController
https://www.waveshare.com/esp32-s3-touch-lcd-1.69.htm
https://makerworld.com/en/models/1015745-1-69-oled-for-tonex-case
https://www.tinytronics.nl/en/power/voltage-converters/buck-(step-down)-converters/dc-dc-ajustable-step-down-buck-converter-lm2596-3a
https://www.tinytronics.nl/en/cables-and-connectors/connectors/screw-terminals/dc-jack-female-5.5mm-to-terminal-block
https://www.tinytronics.nl/en/cables-and-connectors/connectors/screw-terminals/dc-jack-male-5.5mm-to-terminal-block
https://www.thingiverse.com/thing:4982919