Is this authentic? It takes less than a half a sec to turn on. The analog sticks are not soldered to the motherboard and they are in black colors instead of green.
Reverse Engineering a PlayStation 3 Controller
Fix Any Video Game Controller : 9 Steps (with Pictures) - Instructables
PS3 Sixaxis Controller Now Houses Exploit | Hackaday
PS3 - [TUTORIAL] DualShock 3 Controller USB-C mod | PSX-Place
PS3 - Fault finding YLOD with the SYSCON - First steps and Error reporting | Page 73 | PSX-Place
made a handy hotkey diagram for ps3 controllers (should be same for xbox) : r/RetroPie
Joystick Controller - PCB and Wiring
How-to: Make a PS360 controller | Engadget
PlayStation 3 Controller Made Fully Remappable | Hackaday