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--- guides:keyboard_pinout [22 Dec 2023 20:29] – ↷ Page name changed from guides:finding_keyboard_pinout to guides:keyboard_pinout bitteneite
+++ guides:keyboard_pinout [30 Dec 2023 08:58] (current) – Wrote the introduction. bitteneite
@@ Line 1: / Line 1: @@
 ====== Finding your Keyboard's Pinout ======
-[WIP]
+[{{ :bittenguide_pinout_20.jpg?300|Pin Headers with an unknown pinout}}]
+Understanding the pinout of your keyboard's cable is a neccessary step when wiring up a converter. However, randomly attempting to identify pins through trial-and-error poses the risk of potential damage. This concern is especially prevalent when dealing with the VCC (+5V) pin, as inadvertently shorting it to another pin (i.e. GND) can result in **permanent damage**. Adhering to the following methods below allow for a safe determination of the keyboard's pinout.\\
-\\
+//**Note:** A multimeter will be required for the following methods.//
 ----
+===== Prerequisite: Multimeter =====
-===== Method: Using the Original Cable =====
+[{{ :bittenguide_pinout_12.jpg?300|Multimeter}}]
-{{:bittenguide_pinout_11.jpg?nolink&600|}}
+This segment will guide you through preparing your multimeter, complete with an illustrative example of its operation.
+=== Switch to Resistance mode ===
-Determining the pinout of your keyboard using the original cable is often recommended for it's simplicity and ease. However, this method will not work if the cable is severed or cut.
+For all the following methods, the dial on your multimeter must be set to the "Resistance mode", which typically represented by the Ω symbol. \\
-//**Note:** An NTC KB-6153 will be used for demonstration purposes.//
-\\
-==== 1) Prepare your multimeter ====
-=== 1.1) Resistance mode ===
-Switch your dial to the "Resistance mode," typically represented by the Ω symbol. \\
 This mode depicts how easy it is for electricity to travel through a medium, such as a wire.
 {{:bittenguide_pinout_13.jpg?nolink&400|}}
+=== Demonstration ===
-=== 1.2) Demonstration ===
+When in Resistance mode, the multimeter can show you when two ends are connected. The photos below demonstrate the following:
-In the photo below, the multimeter demonstrates that both ends of the yellow wire are **connected**.\\
-Once the yellow wire is broken up, the multimeter reads ".OL", signifying that **no** connection can be found between the two ends.
 <gallery>
@@ Line 30: / Line 20: @@
 bittenguide_pinout_15.jpg
 </gallery>
+  * In the first photo above, the multimeter demonstrates that both ends of the yellow wire are **connected**, as signified by the 0.7Ω reading.\\
+  * However, once the yellow wire is broken up, the multimeter reads ".OL", signifying that **no connection** can be found between the two ends.
+  * Using this information, we can trace the path of any pin in a keyboard.
 //**Note:** For a healthy connection, the multimeter must read a small and stable number. Larger numbers represent more resistance.//
+----
+===== Method 1: Using the Original Cable =====
+{{:bittenguide_pinout_11.jpg?nolink&600|}}
+//**Note:** An NTC KB-6153 will be used for demonstration purposes.//
 \\
-==== 2) Lookup the connector's pinout ====
-Cable connectors follow a **standardized** pinout in most cases, and are often documented online: http://www.kbdbabel.org/conn/index.html
+==== 1) Lookup the connector's pinout ====
+Cable connectors follow a **standardized** pinout in most cases, and are already [[http://www.kbdbabel.org/conn/index.html|documented online.]]
 {{:bittenguide_pinout_22.jpg?nolink&400|}}
-//**Example:** The NTC KB-6153 used in this demonstration uses an XT/AT connector.//\\
+//**Example:** In this demonstration, the NTC KB-6153 uses an XT/AT connector.//\\
 //**Caution:** In this demonstration, the diagram had to be flipped horizontally to match the male version.//
 \\
-==== 3) Search for connections ====
+==== 2) Search for connections ====
-=== 3.1) Probe the PCB's Pin ===
+=== 2.1) Probe the PCB's Pin ===
-Connect one probe to a pin on the PCB. Any pin can be chosen here, but for our first demonstration, the 4th pin is chosen.
+Connect one probe to a pin on the PCB. Any pin can be chosen here, but for this demonstration, the 4th pin is chosen.
 <gallery>
 bittenguide_pinout_16.jpg
@@ Line 51: / Line 51: @@
 //**Note:** As shown above, a pin can probed from multiple areas.//
-=== 3.2) Find the connected pin ===
+=== 2.2) Find the connected pin ===
 Using the other probe of your multimeter, find the pin on the connector that's connected to the PCB pin.
 <gallery>
@@ Line 58: / Line 58: @@
 </gallery>
 //**Note:** Cycle through all the pins until you find a pin where the multimeter reads a small and stable number.//
-=== 3.3) Note it down! ===
+=== 2.3) Note it down! ===
 When a stable connection is detected, refer back to connector's diagram to confirm the pin's name.
 {{:bittenguide_pinout_19.jpg?nolink&400|}}
@@ Line 64: / Line 64: @@
 \\
+----
+===== Method 2: Using the Keyboard's Main Chip =====
-==== 4) Conclusion ====
 [WIP]
-----