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hardware:sw16 [2013/11/12 02:31] jarrod |
hardware:sw16 [2017/11/28 06:21] (current) jarrod |
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- Backlight LED 3 Cathode (-) | - Backlight LED 3 Cathode (-) | ||
- Backlight LED 4 Cathode (-) | - Backlight LED 4 Cathode (-) | ||
- | - Voltage supply 3.3V DC - To Anode (+) of LEDs | + | - Voltage supply 3.3V DC max 500mA - To Anode (+) of LEDs |
- | - Voltage supply 5V DC - To Anode (+) of LEDs | + | - Voltage supply 5V DC max 1A - To Anode (+) of LEDs |
- Ground | - Ground | ||
- Ground | - Ground | ||
Line 88: | Line 88: | ||
**Note:** If using RGB LEDs, make sure they are the 'common anode' type. Then pin 37 or 38 (depending on LED voltage) can be used for anode and each RGB cathode is connected to individual LED pins (17-36). | **Note:** If using RGB LEDs, make sure they are the 'common anode' type. Then pin 37 or 38 (depending on LED voltage) can be used for anode and each RGB cathode is connected to individual LED pins (17-36). | ||
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+ | **Note:** If LEDs require voltage higher than 5V DC, an external power supply can be used up to 30V DC. Simply connect external power +ve to the Anode pins of the LEDs, and the external power supply -ve to pins 39 or 40 (ground) of SW16. Cathode of LEDs still connects to the appropriate LED pin on SW16 (pins 17 - 36). | ||
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{{ :hardware:sw16-voltage-selection.svg?nolink |}} | {{ :hardware:sw16-voltage-selection.svg?nolink |}} |