# Source: https://learn.adafruit.com/2-8-tft-touch-shield/controlling-the-backlight.md

# 2.8" TFT Touch Shield

## Controlling the Backlight

By default, we assume you'll want the backlight on all the time. However, you may want to PWM control or otherwise turn off the LED backlight to save power. You can do this with a simple hack. On the back, look for the two **backlight** jumpers. Cut the trace between the **VCC** jumper using a sharp knife and then solder the jumper labeled **Pin 3**. Then you can use Digital 3 to control the backlight.

![](https://cdn-learn.adafruit.com/assets/assets/000/002/800/medium800/lcds___displays_tftshieldback.jpg?1396787179)

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