Displays

Overview

This RGB LED HAT (B) can be easily attached on top of the Raspberry Pi to display colorful effect, and controlled by only one signal pin.

Features

• Supports any revision of Raspberry Pi (directly-pluggable)
• Onboard 8 × 8 RGB LED (WS2812B)
• Control pin is configurable via jumpers (0Ω resistor)
• Break out control pins, easy for working with other MCUs
• Comes with development resources and manual (examples in Python and Web control)

Specifications

• Operating voltage: 5V
• Brightness: adjustable 256 levels
• Color depth: 24-bit true color (8-bit for R/G/B respectively, totally 256x256x256=16777216 colors)
• Data rate: 800Kbps(typ)
• Dimension: 65mm × 56.2mm
• Mounting hole size: 3.0mm

How to Use

In the case of working with a MCU:

• 5V ↔ 5V power
• GND ↔ GND
• DIN ↔ Signal input

Development Resources

Wiki : www.waveshare.com/wiki/RGB_LED_HAT_(B)

This product contains only the display. Raspberry Pi, case and cables are shown for illustration purposes only and not included.


The cute PiTFT got even more adorable with this little primary display for Raspberry Pi in HAT form! It features a 2.2" display with 320x240 16-bit color pixels. The HAT uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. Best of all it plugs right in on top of your Model A+ or B+ and fits into our case quite nicely.

It's designed to plug directly onto the Raspberry Pi 2 or Raspberry Pi 1 Model A+ or B+ . While not specifically designed for Pi Model A or B,you can use it with A/B if you solder in an extra-tall 2x13 header (not included) instead of the included 2x20 header.

This design uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as well as GPIO #25. All other GPIO are unused and are available on a 25-pin long breakout line. Since we had a tiny bit of space, there's 4 flat tactile switches wired to four GPIOs, that you can use if you want to make a basic user interface. For example, you can use one as a power on/off button.

Comes as a fully assembled display PCB and an additional 2x20 GPIO header. Some light soldering is required to attach the 2x20 GPIO header to the HAT but it's fast and easy for anyone with a soldering iron and solder. You can also swap the plain female header we have with a 'stacky' type that lets you plug in a hat or GPIO cable on top or a slim ultra-low-profile header.

Technical Details

• Board Dimensions: 65mm x 57mm x 6mm / 2.6" x 2.2" x 0.2"
• Screen Dimensions: 55mm x 40mm / 2.2" x 1.6"

Tutorials

To make it super easy for use: Adafruit have created a custom kernel package based of off Notro's awesome framebuffer work, so you can install it over your existing Raspbian (or derivative) images in just a few commands. Their tutorial series shows you how to install the software, play small videos, or display images such as from your PiCam and more!

What's going to protect your beloved Raspberry Pi from an onslaught of rainbow-coloured fusion? That's right, it's Unicorn HAT.

Sporting a matrix of 64 (8 x 8) RGB LEDs and powered directly from the Pi, this is the most compact pocket aurora available.

Unicorn HAT provides a wash of controllable colour that is ideal for mood-lighting, 8x8 pixel art, persistence of vision effects, status indications, or just blasting colour into your surroundings.

The MagPi said that Unicorn HAT was "one of the coolest HATs around"

Features

• 64 RGB LEDs (WS2812B)
• LED data driven via DMA over PWM
• Unicorn HAT pinout
• Compatible with Raspberry Pi 3, 2, B+, A+, Zero, and Zero W
• Python library
• Comes fully assembled

Software

We've put together a Unicorn HAT Python library to make it a breeze to use, including lots of beautiful examples of what it can do.

Notes

• Warning: WS2812 LEDs are bright enough to cause eye pain, do not look at them directly when brightly lit. We recommend the use of a diffuser.
• Photo-sensitivity warning: flashing, strobing, and patterns of lights may cause epileptic seizures. Always take care and immediately stop using if you feel unwell (dizziness, nausea, affected vision, eye twitching, disorientation).
• Power: Unicorn HAT requires a >2A microUSB power supply for your Pi. We recommend the official Raspberry Pi power supply.
• Compatibility (audio): as Unicorn HAT uses PWM and GPIO18, it will interfere with analogue audio playback (random colour patterns and flickering). HDMI should work just fine!

This wasn’t possible on the Model A or B, but now the B+ and newer models exposes 40 GPIO pins, there’s more to play with. As well as just allowing you to connect a VGA monitor natively, it also means you can use it as a secondary monitor alongside HDMI. And unlike composite video, the DPI interface can be run independent of the HDMI. The software for dual screens is still under development, but we expect that to arrive in the next couple of weeks. Running two screens at maximum resolution will consume SDRAM bandwidth, and is yet to be tested. (And there’s a catch: as the board uses most of your GPIO pins, you lose access to them.)

The VGA output supports the same resolution as your HDMI one: from 640 x 480 up to 1920 x 1024 at 60fps. At the highest resolution the pixel quality is almost as good as HDMI. The adapter uses a simple resistor ladder network as a digital-to-analogue converter, so the colour quality depends on how well-balanced your resistors are. There is slight colour banding, and with 6 bits per channel you have a maximum of 262144 colours.

Dom has been working on the software side and the new DPI (read: VGA) driver software has been added to the latest release.

 

Please Note: Raspberry Pi not included

Overview

This is an E-Ink display HAT for Raspberry Pi, 2.7inch, 264x176 resolution, with embedded controller, communicating via SPI interface, supports red, black, and white three-color display.

Due to the advantages like ultra low power consumption, wide viewing angle, clear display without electricity, it is an ideal choice for applications such as shelf label, industrial instrument, and so on.

Features

• No backlight, keeps displaying last content for a long time even when power down
• Ultra low power consumption, basically power is only required for refreshing
• Compatible with Raspberry Pi 2B/3B/Zero/Zero W
• Onboard 4x Keys
• SPI interface, for connecting with other controller boards like Raspberry/Arduino/Nucleo, etc.
• Comes with development resources and manual (examples for Raspberry Pi/Arduino/STM32)

Specifications

• Operating voltage: 3.3V
• Interface: 3-wire SPI, 4-wire SPI
• Outline dimension: 85mm × 56mm
• Display size: 57.288mm × 38.192mm
• Dot pitch: 0.217 × 0.217
• Resolution: 264 × 176
• Display color: red, black, white
• Grey level: 2
• Full refresh time: 15s
• Refresh power: 26.4mW(typ.)
• Standby power: <0.017mW
• Viewing angle: >170°

Please note: Raspberry Pi not included

Interface

Development Resources

Wiki : www.waveshare.com/wiki/2.7inch_e-Paper_HAT_(B)

Package Includes:

1. 2.7inch e-Paper HAT (B) x 1
2. RPi screws pack (2pcs) x 2

Overview

This RGB LED HAT can be easily attached on top of the Raspberry Pi to display colorful effect, and controlled by only one signal pin.

Features

• Supports any revision of Raspberry Pi (directly plugable)
• Onboard 4 × 8 RGB LED (WS2812B)
• Control pin is configurable via jumpers (0Ω resistor)
• Break out control pins, easy for working with other MCUs
• Comes with development resources and manual (examples in Python and Web control)

Specifications

• Operating voltage: 5V
• Brightness: adjustable 256 levels
• Color depth: 24-bit true color (8-bit for R/G/B respectively, totally 256x256x256=16777216 colors)
• Data rate: 800Kbps(typ)
• Dimension: 65mm × 30.2mm
• Mounting hole size: 3.0mm

How to Use

In the case of working with a MCU:

• 5V ↔ 5V power
• GND ↔ GND
• DIN ↔ Signal input
• DOUT ↔ Signal output (optional)

Development Resources

Wiki : www.waveshare.com/wiki/RGB_LED_HAT

Descriptions : 

The MAX7219 is an integrated serial input / output common-cathode display driver, it is connected to a microprocessor with 8digit 7segment digital LED display can also be connected to the bar graph display or 64 separate LED.

On B BCD encoder including an on chip, multi channel scanning loop word drive, but also an 8 x 8 static RAM is used to store each data. Only one external register is used to set the current of each LED segment.

A convenient four wire serial interface can connect all general purpose microprocessor. Each data can be addressed in the update does not need to rewrite all the display. MAX7219 also allows the user to select on each data coding or non-coding.
 

The entire device contains a 150uA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display the 1-8 bits of data, as well as a let all LED light detection mode.

Only need three IO ports can drive a dot-matrix! Dot-matrix display, flicker-free! Supports cascading !

Notice:
This kit requires soldering.


Package includes :

  1x MAX7219 Dot Matrix Module

Specifications:

A single module can drive an 8 x 8 common cathode lattice
Operating voltage: 5V
Size: 5 x 3.2 x 1.5 cm (L x W x H)
LED color: red
With four screws hole, aperture 3mm
With input and output interfaces, supports multiple modules cascade

Wiring instructions:

1. The module left side as an input port and the output port on the right
2. To control a single module, just connect the input port to the CPU
3. When cascading multiple modules, the input port of the first module connect to the CPU, the output port connect to the input port of the second one, and so on.

In the case of 51 MCU:

VCC → 5V
GND → GND
DIN → P22
CS → P21
CLK → P20

Note:

1. VCC and GND should not be reversed, it will burn the chip!
2. When the 51 microcontroller P0 port controlling, must be connected to the pull-up resistor, it is recommended that the resistance of 4.7K--10K is used.

Package includes:

1 x LED module
5 x Dupont line (20cm)

• http://playground.arduino.cc/Code/PCD8544
• http://en.radzio.dxp.pl/bitmap_converter/
• http://www.instructables.com/id/How-to-use-a-Nokia-5110-84X48-LCD-display-with-you/