The evolution in engineering between these two gamepads has opened the doors to higher component density, faster assembly times, and improved electrical performance. Cropping into the battery, we can crisply visualize the location of the anode tab, connected to the positive terminal of the battery and the leads. The battery lasts up to 20 hours in Switch, so should go even longer here because there are no haptic motors or joystick. The newer controller features the same lithium-ion battery that’s inside the Switch Joy-Con. This solder joint ensures a secure and reliable electrical connection between the wire and the circuit board. The controller cable attaches to the back of the original SNES gamepad circuit board with a soldered 5-pin joint. To the right of the BGA is a Quad Flat Package (QFP) for some of its integrated circuits. The BGA provides a more compact and efficient way of connecting the microcontroller to the circuit board, allowing for a higher density of connections. On the left, we see a Ball Grid Array (BGA), a type of surface-mount packaging for integrated circuits. The Switch controller has more advanced connection interfaces. The connection interface is a traditional through-hole design, where the pins of the chip pass through holes in the circuit board and are soldered on the other side. This chip converts button inputs into digital signals that can be transmitted to the console. Zooming into the original Super Nintendo controller, we find a 12-bit shift register chip. The Switch circuit board has much finer traces, densely packed components, and more intricate routing to accommodate the increased functionality and advanced features of the controller, such as the battery-powered wireless connection to the Switch console. We see exactly where each of the buttons makes contact with the circuit board. The original circuit patterns in the original gamepad (on top) consist of basic traces and connections, with larger components spaced farther apart. ![]() The majority of internal real estate in both gamepads is taken up by circuit boards.
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