This article compiles to help you identify, source, and apply the component behind this keyword, based on common marking patterns and industry standards.
Demystifying the KL SN102 94V-0: Your Ultimate Guide to LCD Circuit Board Identification
If you can’t get the display to show, test the data lines (D0-D7). kl sn102 94v 0 datasheet pdf 18 exclusive
: This UL 94 classification indicates the PCB material is flame-retardant, self-extinguishing within 10 seconds, and does not drip flaming particles. Common Applications
The overwhelmingly popular consensus is that these KL SN102 modules are compatible with the or a clone like the KS0066 . This is the industry-standard controller for character LCDs, so your code and libraries for any 16x2 or 20x4 display (Arduino's LiquidCrystal.h , for example) will work perfectly once you have the correct wiring. This article compiles to help you identify, source,
By combining these practical steps, you can successfully decode and use this mysterious yet functional component for your projects.
If the image is persistent, check for display voltage issues. If the image is persistent, check for display voltage issues
| Pin | Symbol | Function | Notes | | :-- | :--- | :--- | :--- | | 1 | VSS | Ground (GND) | Connect to 0V. | | 2 | VDD | Power Supply (+5V) | Main logic power. | | 3 | V0 / VEE | Contrast Adjustment | Connect to the wiper of a 10kΩ potentiometer between VDD and GND. | | 4 | RS | Register Select | 0: Command, 1: Data. | | 5 | RW | Read/Write | Connect to GND to disable reading. | | 6 | E | Enable Signal | Clock for data. | | 7-14 | D0-D7 | Data Bus | For 8-bit mode, use all. For 4-bit mode, use D4-D7. | | 15 | A | Backlight Anode (+) | Connect to +5V through a resistor (e.g., 220Ω) to limit current. | | 16 | K | Backlight Cathode (-) | Connect to GND. | | 17-18 | A/K | Backlight Duplicates | These often duplicate pins 15 & 16, possibly for mechanical stability. |
Used in commercial or residential LED lighting fixtures to regulate voltage and current.