14-10-2014, 22:54
TFT backlight control is available since v013 software.
With the already existent press button, it's possible to switch the TFT backlight on or off. A user defined timeout for auto off is also implemented in v013 software.
With RX boards prior to v4.xx, this new feature requires some extra hardware, but just a 2N7000 transistor and a 10K resistor. Less than 1€
These modifications can be applied to all RX units already built with any board version below v3.01
For all those who have already built your RX units, I leave out some pictures that illustrate the necessary connections.
For this mod to work you need to be using v013 software.
Note: This hardware and software mods are not mandatory. Even without them, your system will work with v013 software releases, you just don't have TFT backlight control.
![[Image: backlight_mod1.jpg]](http://www.meteocercal.info/forum/images/01forum_img/backlight_mod1.jpg)
Image bellow shows only connections for the control of the backlight. All other connections should be made as illustrated in the previous topic.
The bicolor Led is no longer used. Just a normal Led at LD1.
![[Image: backlight_mod.jpg]](http://www.meteocercal.info/forum/images/01forum_img/backlight_mod.jpg)
With the already existent press button, it's possible to switch the TFT backlight on or off. A user defined timeout for auto off is also implemented in v013 software.
With RX boards prior to v4.xx, this new feature requires some extra hardware, but just a 2N7000 transistor and a 10K resistor. Less than 1€
These modifications can be applied to all RX units already built with any board version below v3.01
For all those who have already built your RX units, I leave out some pictures that illustrate the necessary connections.
For this mod to work you need to be using v013 software.
Note: This hardware and software mods are not mandatory. Even without them, your system will work with v013 software releases, you just don't have TFT backlight control.
Image bellow shows only connections for the control of the backlight. All other connections should be made as illustrated in the previous topic.
The bicolor Led is no longer used. Just a normal Led at LD1.