Standby mode - TFT Touch Shield V2.1

Ardiuno Compatible shields

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Standby mode - TFT Touch Shield V2.1

Post by Anonymous » Tue Jun 18, 2019 10:36 pm


Do you know if there is a on the Touch shield ?
I want to know that because I'm using the Touch Shield on a Seeeduino board and when we don't use the device it's useless to consume the power.

Seeed Tech Support
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Post by Seeed Tech Support » Wed Jun 19, 2019 11:00 am

HI Alexis,

The backlight is always default on, if you want to change the backlight, you need to do some hacking on the board. Please look at the back side of the board. There's a BACKLIGHT label. One side is named as ON, and the other side is named D7. We need to cut the wire between middle pad and ON pad, solder middle pad with D7 pad. As shown below.

enter image description here

Then you can control the backlight via D7.

To open backlight: digitalWrite(7, HIGH);

To close backlight: digitaWrite(7, LOW);


best rgds

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