PiScreen - 3.5" TFT(480x320) with touch control.

PiScreen – 3.5″ TFT(480×320) with touch control for the Raspberry Pi – Kickstarter launched

We have launched a Kickstarter campaign for a 3.5″ TFT (480×320) with touch control, we have given it the name of PiScreen.

PiScreen includes a 3.5″ TFT with touchscreen control, PCB and components needed to add this display to a Raspberry Pi.

PiScreen connects right on top of the Raspberry Pi GPIO pins

 

The TFT used is the best quality we have seen so far.

TFT TFT TFT
PiScreenKit PiScreenKit

Some specifics;
Touch Screen Resistive
Display construction 480 * 320 DOTS
LCD Controller ILI9481
Touch Screen ControllerXPT2046
Display Color Multicolor, 65536 colors

Head on over and check it out.https://www.kickstarter.com/projects/2135028730/piscreen-a-35-tft-with-touchscreen-for-the-raspber

Software PWM on a Raspberry Pi

If you want to control the brightness of a LED, the speed of a DC motor or the direction of a servo, you will need PWM.

The video shows PWM being used to control the brightness of some LEDs.

Pulse-width modulation (PWM) is used to control the amount of power supplied to electrical devices, especially to DC motors, servos and LEDs.

PWM is able to achieve this by quickly turning off and on the power to the device. The measurement for this is duty cycle.

Duty cycles describes the proportion of ‘on’; a low duty cycle corresponds to low power, because the power is off for most of the time.  A high duty cycle corresponds to high power, because the power is on most of the time.

Duty cycle is expressed in percent, 50% is when the power is on half the time and 100% being fully on.

pwm

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