You can turn this modular clamp-on controller into an N64 or GameCube gamepad

The X5 Alteron works with smartphones and tablets, and it can replace faulty Joy-Cons on your Nintendo Switch.

Razer’s new controller has TMR sticks and ultra-low latency Bluetooth for use with TVs

But its sub-3ms Bluetooth is only compatible with LG TVs.
GameSpot

8BitDo Reveals Ultimate 3E Modular Controller For Xbox And PC

At CES 2026, 8BitDo unveiled its first modular wireless controller that could be the Elite Series 2 alternative you're ...
IEEE

New Tools for Tuning PID Controllers Using Orthogonal Polynomials

Abstract: This paper presents an algorithm to determine PID controller tuning regions that guarantee the stability of closed-loop control systems using the pole placement method, assigning a known ...