raspberry pi lcd touch screen adafruit tutorial pricelist

Is this not the cutest little display for the Raspberry Pi? It features a 2.8" display with 320x240 16-bit color pixels and a capacitive touch overlay. That"s right, instead of a resistive touchscreen, which requires a fingernail or stylus, you can now use a fingerpad.

This updated design fits perfectly onto the Pi Zero, Pi 3, Pi 2 or Model A+, B+! (Any Pi with a 2x20 connector) Not for use with an old Pi 1 with 2x13 connector. This version also has all 40 pins GPIO pins brought out so you can connect a 40-pin GPIO cable underneath.

The display and touchscreen uses the hardware I2C Pins (SDA & SCL), SPI pins (SCK, MOSI, MISO, CE0) as well as GPIO #25 and #24. All other GPIO are unused and you can still share the I2C pins with sensors, LED drivers, etc. Since we had a tiny bit of space, there"s 4 slim 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.

Use it for console access or easily pop up X11 onto the PiTFT for a mini monitor, although its rather small at 320x240. Instead, we recommend using PyGame or other SDL-drawing programs to write onto the frame buffer.

Please note at this time the Pi Kernel we have does not come with support for built-in Pi 3 Bluetooth.There is no ETA when Adafruit will have this fixed.

Check this out if you are using Raspberry Pi, it is the cutest little display that you can stack on your Raspberry Pi 2. It features a 2.8" display with 320x240 16-bit color pixels and a resistive touch overlay. The plate 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!

Uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as well as GPIO #25 and #24. All other GPIO are unused. Since we had a tiny bit of space, there"s 4 spots for optional slim 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.

Adafruit has 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. This tutorial shows you how to install the software, as well as calibrate the touchscreen, show videos, display images such as from your PiCam and more!

Add some jazz & pizzazz to your project with a color touchscreen LCD. This TFT display is 2.4" diagonal with a bright (4 white-LED) backlight and it"s colorful! 240x320 pixels with individual RGB pixel control, this has way more resolution than a black and white 128x64 display.

If you need a larger touchscreen, check out the 2.8" diagonal or 3.5" diagonal TFT breakouts. For a smaller display, see our non-touch 2.2" or 1.8" or 1.44" diagonalTFTs

This display has a controller built into it with RAM buffering, so that almost no work is done by the microcontroller. The display can be used in two modes: 8-bit or SPI. For 8-bit mode, you"ll need 8 digital data lines and 4 or 5 digital control lines to read and write to the display (12 lines total). SPI mode requires only 5 pins total (SPI data in, data out, clock, select, and d/c) but is slower than 8-bit mode.

This display for the Raspberry Pi features 2.4" with 320x240 16-bit color pixels and a resistive touch overlay. 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!

This design uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as well as GPIO #25 and #24. All other GPIO are unused. Since we had a tiny bit of space, there"s 5 spots for optional slim tactile switches wired to five 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.

There is a right-angle 26-pin connector off to the side. You can connect a classic 26-pin Raspberry Pi GPIO cable in order to access the rest of the GPIO through a Cobbler, etc.

Each order ships with an assembled HAT with 2.4" TFT display with resistive touchscreen and a 2x20 female socket header. Some light soldering is required to attach the header but it is easy work for anyone with a soldering iron & solder.Alternatively, you can use a stacking type header instead if you"d like to plug a 2x20 GPIO cable on top.

A number of people have used a Motorola Atrix Lapdock to add a screen and keyboard with trackpad to RasPi, in essence building a RasPi-based laptop computer. Lapdock is a very clever idea: you plug your Atrix smart phone into Lapdock and it gives you an 11.6" 1366 x 768 HDMI monitor with speakers, a keyboard with trackpad, two USB ports, and a large enough battery for roughly 5 hours of use. The smart phone acts as a motherboard with "good enough" performance. The advantage over a separate laptop or desktop computer is that you have one computing device so you don"t need to transfer files between your phone and your desk/laptop.

Unfortunately for Motorola, Lapdock was not successful (probably because of its US$500 list price) and Motorola discontinued it and sold remaining stock at deep discounts, with many units selling for US$50-100. This makes it a very attractive way to add a modest size HDMI screen to RasPi, with a keyboard/trackpad and rechargeable battery power thrown in for free.

Lapdock has two connectors that plug into an Atrix phone: a Micro HDMI D plug for carrying video and sound, and a Micro USB plug for charging the phone and connecting to the Lapdock"s internal USB hub, which talks to the Lapdock keyboard, trackpad, and two USB ports. With suitable cables and adapters, these two plugs can be connected to RasPi"s full-size HDMI connector and one of RasPi"s full-size USB A ports.

The RasPi forum has a long thread on Lapdock with many useful suggestions, photos, and links: I made a Raspberry PI Laptop. There"s also a good "blog entry at element14 with photos and suggestions of where to get cables and adapters: Raspberry Pi Laptop. TechRepublic has a tear-down article with photos of Lapdock internal components here: Cracking Open the Motorola Droid Bionic Lapdock. Paul Mano has a wealth of photos of Lapdock innards at Motorola Atrix Lapdock mod projects.

Lapdock uses the HDMI plug to tell if a phone is plugged in by seeing if the HDMI DDC/CEC ground pin is pulled low. If it"s not, Lapdock is powered off. As soon as you plug in a phone or RasPi, all the grounds short together and Lapdock powers itself on. However, it only does this if the HDMI cable actually connects the DDC/CEC ground line. Many cheap HDMI cables do not include the individual ground lines, and rely on a foil shield connected to the outer shells on both ends. Such a cable will not work with an unmodified Lapdock. There is a detailed "blog entry on the subject at element14: Raspberry Pi Lapdock HDMI cable work-around. The "blog describes a side-benefit of this feature: you can add a small power switch to Lapdock so you can leave RasPi attached all the time without draining the battery.

The Lapdock Micro USB plug is the upstream port of Lapdock"s internal USB hub, and connects to one of RasPi"s full-size USB ports. Lapdock is not USB compliant since it provides upstream power on its Vbus pin. Lapdock uses this to charge the Atrix phone. You can use this feature to power RasPi if you have a newer RasPi. The original RasPi rev 1 has 140 mA polyfuses F1 and F2 to protect the USB ports, which are too small for powering RasPi using upstream power. Newer RasPis replace F1 and F2 with zero Ohm jumpers or eliminate them entirely, which allows Lapdock to provide power. If you don"t mind modifying your original RasPi, you can add shorting jumpers over F1 and F2 or replace them with higher-current fuses.

What gets powered on depends on whether Lapdock is open or closed. If it"s open, the screen and all Lapdock USB ports are powered. If you close Lapdock, the screen and full-size USB ports are powered down, but the Micro USB still provides upstream power. This is for charging an Atrix phone. When you open or close Lapdock, the Micro USB power switches off for about a second so if your RasPi is connected it will reboot and you may have a corrupted file system. There"s discussion about this at the RasPi forum link, and someone has used a supercapacitor to work around the problem: Raspberry Pi lapdock tricks.

When you do not connect a HDMI monitor, the GPU in the PI will simply rescale (http://en.wikipedia.org/wiki/Image_scaling) anything that would have appeared on the HDMI screen to a resolution suitable for the TV standard chosen, (PAL or NTSC) and outputs it as a composite video signal.

The Broadcom BCM2835 only provides HDMI output and composite output. RGB and other signals needed by RGB, S-VIDEO or VGA connectors are however not provided, and the R-PI also isn"t designed to power an unpowered converter box.

Note that any conversion hardware that converts HDMI/DVI-D signals to VGA (or DVI-A) signals may come with either an external PSU, or expects power can be drawn from the HDMI port. In the latter case the device may initially appear to work, but there will be a problem, as the HDMI specs only provide in a maximum of 50mA (@ 5 Volt) from the HDMI port, but all of these adapters try to draw much more, up-to 500mA, in case of the R-PI there is a limit of 200mA that can be drawn safely, as 200mA is the limit for the BAT54 diode (D1) on the board. Any HDMI to VGA adapter without external PSU might work for a time, but then burn out D1, therefore Do not use HDMI converters powered by the HDMI port!

The solution is to either only use externally powered converters, or to replace D1 with a sturdier version, such as the PMEG2010AET, and to replace the power input fuse F3 with a higher rated one, as the current one is only 700mA, and the adapter may use 400mA itself. Also notice that the R-PI"s power supply also must be able to deliver the extra current.

Alternatively, it may be possible to design an expansion board that plugs into the LCD headers on the R.Pi. Here is something similar for Beagleboard:

The schematics for apples iPhone 3gs and 4g suggest they speak DSI, thus they can probably be connected directly. The older iPhones use a "Mobile Pixel Link" connection from National Semiconductor. The 3GS panel (480×320) goes as low as US $14.88, while the 4G one (960×640, possibly the LG LH350WS1-SD01, with specifications) can be had for US $17.99 or as low as US $14.28. The connectors used might be an issue, but this connector might fit. Additional circuitry might be necessary to provide the display with required 1.8V and 5.7V for operation, and an even higher voltage for the backlight.

The Raspberry Pi provides one clock lane and two data lanes on the S2 connector, as can be read from the schematics. It is currently unknown whether this is enough to drive the iPhone 4G screen, as that screen seems be driven with three data lanes in its original application.

I2C/SPI ADC can be used to interface 4 pin resistive Touch Screens, For example STMPE812A. Texas Instruments has a solution for 4 or 8 wire touchscreens using their rather cheap MSP4309.

These have controllers and interfaces for feeding in text (and symbols). Common screen sizes include 16x2 to 40x4. They"re often seen in keypads, industrial machines, cash registers, laser printers etc.

Parallel interface displays can be found in many sizes, usually up to 7" and more. Parallel interfaces are usually 8 or 16-bits wide (sometimes 18 or 24-bit wide), plus some control-lines. The Raspberry Pi P1-connector does not contain enough GPIOs for 16-bit wide parallel displays, but this could be solved by borrowing some GPIOs from the CSI-connector or from P5 (on newer Raspberry Pis). Alternatively, some additional electronics (e.g. shift-registers or a CPLD) can be used, which could also improve the framerate or lower the CPU-load.

AdvaBoard RPi1: Raspberry Pi multifunction extension board, incl. an interface and software for 3.2"/5"/7" 16-bit parallel TFT-displays incl. touchscreen with up to 50 frames/s (3.2", 320x240)

Texy"s 2.8" TFT + Touch Shield Board: HY28A-LCDB display with 320 x 240 resolution @ 10 ~ 20fps, 65536 colors, assembled and tested £24 plus postage, mounts on GPIO pins nicely matching Pi board size, or via ribbon cable

The Raspberry Pi Pico was the first microcontroller to feature Raspberry Pi’s RP2040 SoC, but a number of vendors are releasing their own third-party boards with added features. The latest and, so far, best is Adafruit’s Feather RP2040, which combines the popular Feather ecosystem and form factor with Raspberry Pi silicon.

Powered by a variety of SoCs from the likes of Atmel and Espressif, Adafruit’s Feather line of microcontrollers has been around for years so there’s a plethora of accessories and add-on boards called FeatherWings, which can mount either on top of or underneath the board or, if we use stacking headers, on both at the same time.

Even if you’re not invested in the Feather ecosystem, there’s a lot to love about the Adafruit’s microcontroller, including its strong battery support, STEMMA QT compatibility, 8MB of Flash storage and four ADC ports. At three times the price of a regular Pico, the Feather RP2040 still offers great bang for the buck.

System on ChipRP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom. Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz. 264KB of SRAM, and 8MB of on-board Flash memoryRow 0 - Cell 2

GPIO21 × multi-function 3.3V GPIO pins 2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC, 16 × controllable PWM channels 8 × Programmable I/O (PIO) state machines for custom peripheral support. Castellated module allows soldering directly to carrier boards. Onboard WS2812 Neopixel STEMMA QT connector Onboard battery charging and support for hot swappable LiPo and Lilon batteries USB Type CRow 1 - Cell 2

As you may have already gathered, the Adafruit Feather RP2040 follows the Feather design principles and so it is compatible with the Feather range of addons, known as FeatherWings. Measuring 2 x 0.9 inches (50.8 x 22.8mm) the Feather RP2040 is slightly larger than the Raspberry Pi Pico which measures 2 x 0.8 inches (51 x 21mm).

Despite the larger size, the Feather RP2040 comes with a slightly-reduced number of GPIO pins, -- 21 versus the PIco’s 40 -- laid out to match the Feather pinout. It is great to see the GPIO labeled on both sides of the board as the Pico’s labels are only on its underside. .

Of the 21 pins there are four 12-bit ADCs, one more than the Pico and we gain the extra ADC by not monitoring the battery power levels. There are two sets of I2C pins, two SPI and two UART. Of the 21 pins, 16 can be used for PWM (Pulse Width Modulation) such as servo control, LEDs and basic audio output.

Onboard the Feather RP2040 is a simple red LED and we see a single Neopixel RGB LED which we can control using CircuitPython. On board flash storage is four times the amount found on the Raspberry Pi Pico, 8MB vs 2MB. With a typical CircuitPython install, we still have around 7 MB spare for our code and the supporting libraries.

Batteries can be hot swapped and used as a form of UPS for critical projects. We plugged in a spare LiPo battery and wrote a test project to flash the onboard Neopixel. After removing the USB power, the board continued running the code. The inclusion of the JST connector is why we lose a few GPIO pins, but we will happily take their loss for the inclusion of battery power.

As the Feather RP2040 is an Adafruit board, it is obvious that Adafruit would champion CircuitPython, its version of MicroPython, as the programming language of choice. Downloading and flashing CircuitPython is a simple process, made simpler thanks to the reset button.

CircuitPython is a little more user friendly than MicroPython, not that MicroPython is particularly difficult to work with, and includes some extra features such as USB HID support. . Our Feather RP2040 appears as a USB flash drive, and we can edit the code.py file to write our code. It is best practice to use a good editor, such as Visual Studio Code, Thonny or, for young makers, there is Mu. Libraries of pre-written Python code for addons and accessories are available as a download from Adafruit and they greatly simplify projects, especially if used with STEMMA QT components.

We chose to use Visual Studio Code and we soon wrote a script to blink the onboard LED to confirm that our code worked with the board. With that success we moved on to more adventurous tests. After installing the Neopixel library we wrote a test script to change the color of the Neopixel LED and, after saving our code, the Adafruit Feather RP2040 rebooted and ran it, producing a rainbow of lights in these dark winter nights.

The onboard STEMMA QT connector had us intrigued, so we connected an MPR121 capacitive touch board to the Feather RP2040, installed the CircuitPython library and wrote a few lines of code to detect when a pin was touched. The code worked perfectly and this bolstered our confidence.

Next we tried connecting an I2C HD44780 LCD screen, which has a 16 x 2 character display. We connected the screen to the Feather RP2040, found a compatible library and then wrote a short test to display text. This is where our confidence took a knock, We saw errors in the Python Shell that indicated the need for pull up resistors on both of the I2C pins. The Feather RP2040 does not have pull up resistors for the I2C pins, unless you are using a STEMMA QT board which has resistors built in.

After sourcing two 4.7K Ohm resistors (see resistor color codes to identify) we tried again, this time the error involved “clock stretching”, after a little time searching the Internet and trying a few suggestions, the error remained. In the end it turned out that the two 4.7K Ohm resistors were touching and causing the error.

Using Adafruit’s Feather RP2040 with CircuitPython felt natural. Projects worked and after a few hiccups we found the workflow that suited us best. At the time of writing Feather RP2040 cannot be used with MicroPython or C. Scott Shawcroft, CircuitPython project lead has raised an issue on Github to address this issue. But in our experience CircuitPython and Feather RP2040 is the ideal combination.

We didn’t get to test the Feather RP2040 with any of Adafruit’s ecosystem of FeatherWing add-on boards, but there are more than a dozen ready to go. These include an OLED screen, a Wi-Fi coprocessor, an RGB LED matrix, a joystick and a QWERTY keyboard with LCD. Because the Feather line has been around for years, there’s a ton of options.

With the integrated battery power system, Feather RP2040 is as much at home in an embedded, outdoor and portable project as it is powering a cosplayer’s latest creation. The form factor, STEMMA QT add-ons, FeatherWing add-on boards and ease of use, thanks to CircuitPython, make this board ideal for those wanting to use accessories from Adafruit’s vast collection.

If you can find one for sale -- they were sold out at press time -- consider Adafruit’s Feather RP2040 over the official Pico . We get battery power, STEMMA QT,FeatherWing add-ons, onboard Neopixel and lots more storage space.

Of course, its Feather compatibility could be a drawback in some instances as it clearly won’t work with add-ons and accessories that are specifically designed to work with a Pico. You wouldn’t be able to plug it into, for example, Pimoroni’s Pico Explorer Base, which has a 40-pin connector. And, if you need a smaller form factor, the Pimoroni Tiny RP2040 is made for you.

However, if you’re looking for the most versatile RP2040 board on the market, look no further. Sure, we pay a premium over the Raspberry Pi Pico, but the Adafruit Feather RP2040 is a refined product that is ready to drop into your next project.

Is this not the cutest, little display for the Raspberry Pi? It features a 3.5" display with 480x320 16-bit color pixels and a resistive touch overlay just like our popular original, but this one is engineered specifically to work with the newer "2x20 connector" Raspberry Pi"s. The plate 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!

This PiTFT 3.5" is designed to fit nicely onto the Raspberry Pi Zero, Pi 3, Pi 2 or Model A+ / B+ (any Pi with a 2x20 connector). Not for use with an old Pi 1 with 2x13 connectorIf you"d like to use a 3.5" display with the original Pi A or Pi B, check out this version

The display uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as well as GPIO #25 and #24. GPIO #18 can be used to PWM dim the backlight if you like. All other GPIO are unused. There"s a 2x13 "classic Pi" connection GPIO header on the bottom, you can connect a 26-pin Pi GPIO cable to it to use any of the other pins as you like. The other GPIO are broken out into solder pads at the bottom, in case you want to use more of the GPIO.

Best of all, it comes fully assembled and ready to plug into your Pi! You can use this as a display for running the X interface, or pygame. You can also have an HDMI display seperately connected. There"s four mounting ears that can be used to attach the display & Pi to a bezel, or snap them off with pliers (they"re perforated) for a slick exactly-the-same-size-as-a-Pi look.

We"ve 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. Our tutorial shows you how to install the software, as well as calibrate the touchscreen, display images such as from your PiCam and more!