1.54inch tft display for pi zero free sample

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Both Raspberry Pi Zero and Raspberry Pi Zero W is ok. WiFi version can make subsequent setup easier but in contrast it may draining more power continuously, i.e. shorter battery life.

Waveshare released 2 LCD HAT for RPi Zero, both have a tiny square LCD. The newer version have a 240 x 240 1.3" IPS LCD. It is 261 PPI and within the apple defined retina display range (218 - 458 PPI). This resolution is capable to emulate many retro game console in the CRT TV age, e.g. NES at 256 x 240 resolution, we can cut 8 pixels from both left and right overscan area and make it become 240 x 240.

To closely fit for the Waveshare 1.3" LCD HAT, it require a 8 mm tall 2 x 20 pins header. But I cannot buy one with 8 mm tall, so I will modify from a 12 mm tall pin header.

The interior size between RPi and LCD HAT can fit for a 5 mm x 23 mm x 45 mm battery, any LiPo battery with protection circuit that within this dimension should be ok.

I have some 10 mm x 10 mm tiny 5 V LiPo charge board in hand. It is small enough for this project, but the limitation is it only can charge the battery up to 50 mA current. A 400 mAh battery require over 8 hours for fully charged.

According to the RPi Zero reduced schematics, there are only 2 pins direct connected to 5 V, it is USB plug and PAM2306 regulator. All other parts powered by regulated 3.3 V and 1.8 V.

RPi Zero average draw around 100 - 200 mA and the LiPo is around mAh, the discharge rate is around 0.5 C. It can still utilise 90% of LiPo capacity before drop below 3.5 V.

Waveshare LCD HAT use low profile female pin header, it can make the product more slim. But we need a corresponding low profile male pin header at RPi Zero to make it. The male pin header should be 8 mm tall, but I cannot find on the web. So patch it from a 12 mm male pin header.

The steps to flash RetroPie image to the micro SD card is as same as flashing Raspbian image. If you are not familiar the flashing steps, please follow the steps provided by Raspberry.org:

We need further config after RetroPie boot, before that, we need to enable DWC2 USB controller to make network connection between computer and Pi Zero.

Edit the codlin.txt in micro SD, insert "modules-load=dwc2,g_ether" after "rootwait" keyword. The result should be something like that:dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=PARTUUID=14a75fe9-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait modules-load=dwc2,g_ether quiet loglevel=3 consoleblank=0 plymouth.enable=0 quiet init=/usr/lib/raspi-config/init_resize.sh

create the "/etc/modprobe.d/fbtft.conf"options flexfb setaddrwin=0 width=240 height=240 init=-1,0x11,-2,120,-1,0x36,0x70,-1,0x3A,0x05,-1,0xB2,0x0C,0x0C,0x00,0x33,0x33,-1,0xB7,0x35,-1,0xBB,0x1A,-1,0xC0,0x2C,-1,0xC2,0x01,-1,0xC3,0x0B,-1,0xC4,0x20,-1,0xC6,0x0F,-1,0xD0,0xA4,0xA1,-1,0x21,-1,0xE0,0x00,0x19,0x1E,0x0A,0x09,0x15,0x3D,0x44,0x51,0x12,0x03,0x00,0x3F,0x3F,-1,0xE1,0x00,0x18,0x1E,0x0A,0x09,0x25,0x3F,0x43,0x52,0x33,0x03,0x00,0x3F,0x3F,-1,0x29,-3

Find the "static const int mk_arcade_gpio_maps[]" row and update to HAT button mapping:static const int mk_arcade_gpio_maps[] = {6,19,5,26,13,21,16,20,0,0,0,0};

Fine tune for 1.3" LCD: C Configuration / Tools -> 805 configedit -> 1 -> 0 -> 2 Render Resolution -> O Video output resolution -> OK -> Cancel -> Cancel -> Cancel

The LCD HAT have 3 buttons and 1 extra push button in the cross button, it can map to the retro game console that only have 4 buttons (select, start, A and B). The highest resolution for this type of game console should be NES, it have 256 x 240 resolution. It can just fit for the 240 x 240 LCD display if simply crop the horizontal overscan area.

sorry for all the questions but could you please tell me what pins on the waveshare board i should solder because i dont know how you numbered the pins and what their functions are

for some reason my screen stays blank and it seems to output to hdmi (my tv cant handle the resolution though. i don"t see anything but get a low res warning)

got it to work by adding "fbcp &" to /etc/rc.local above the word “exit” at the end of the file. but the display looks weird. is that a misconfiguration or is the display broken?

i could fix it. according to https://www.waveshare.com/w/upload/6/6b/1.3inch_lcd_hat_user_manual_en.pdf i did edit the /etc/modprobe.d/fbtft.conf with speed=40000000 instead of 125000000 looking good now0

Nice work. I followed your instructions but for example the game 1942 I cannot see to complete screen, there are black bars at the sides. If I put "rotate=1" in "config.txt" I get image complete (like your video) but it is rotated 90º. How can do it to get a complete image wihtout "rotate=1"?

If I want to add sega Megadrive roms into system. Can you guide how to map the "c" button? (Megadrive have 4 buttons A,B,C and start this quite suit for this thing)

The ST7789 TFT module contains a display controller with the same name: ST7789. It’s a color display that uses SPI interface protocol and requires 3, 4 or 5 control pins, it’s low cost and easy to use. This display is an IPS display, it comes in different sizes (1.3″, 1.54″ …) but all of them should have the same resolution of 240×240 pixel, this means it has 57600 pixels. This module works with 3.3V only and it doesn’t support 5V (not 5V tolerant).

The ST7789 display module shown in project circuit diagram has 7 pins: (from right to left): GND (ground), VCC, SCL (serial clock), SDA (serial data), RES (reset), DC (or D/C: data/command) and BLK (back light).

As mentioned above, the ST7789 TFT display controller works with 3.3V only (power supply and control lines). The display module is supplied with 3.3V (between VCC and GND) which comes from the Arduino board.

To connect the Arduino to the display module, I used voltage divider for each line which means there are 4 voltage dividers. Each voltage divider consists of 2.2k and 3.3k resistors, this drops the 5V into 3V which is sufficient.

The first library is a driver for the ST7789 TFT display which can be installed from Arduino IDE library manager (Sketch —> Include Library —> Manage Libraries …, in the search box write “st7789” and install the one from Adafruit).

testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST77XX_WHITE);

testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ",ST77XX_WHITE);

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For a wholesale lcd display, visit Alibaba.com. This online shopping platform offers a wide range of heat pump water heaters. It is also open 24/7, and so you can visit the website at any time and place your order with a few clicks.

There are lcd display available in a variety of sizes (16x2, 16x4, 20x2, 20x4, 24x2, 40x2, and more) as well as many resolutions. Some of the modules allow for clear and colorful displays. You can find some modules that have integrated controllers, coloured and monochrome, and flat-screen and modules with SPI. For greater visibility outdoors, there are also super-bright modules with high luminance ranges.

Lcd display enable metal and position detection without having to physically contact the metal object. They offer a wide range of applications in robotics, rail, material handling, aerospace, military, as well as heavy machinery. Choose from different lcd display types, from the shielded versions that have electromagnetic fields concatenated in the front and unshielded applications that allow wider sensing distances. Whether you want to use your sensors for industrial purposes or source for your brand, there is a wide selection of wholesale lcd screen to choose from that will suit different applications.

CODE EXAMPLES and DEFINITIONS#define TFT_CS        17  #define TFT_RST       21  #define TFT_DC        16  #define TFT_MOSI      19  #define TFT_SCLK      18  #define TFT_BACKLIGHT 20 //Display backlight pin   #define speaker      0  byte colPins[COLS] = {1, 2, 3, 4, 5}; //connect to the column pinouts of the keypad extra cursor keys 14byte rowPins[ROWS] = {6, 9, 15, 8, 7, 22}; //row pinouts of the keypadchar directKeys[ROWS][COLS] = {  {KEY_RETURN, " ", "m", "n", "b",},  {KEY_DELETE, "l", "k", "j", "h",},  {"p", "o", "i", "u", "y",},  {KEY_SHIFT, "z", "x", "c", "v",},  {"a", "s", "d", "f", "g",},  {"q", "w", "e", "r", "t",}  };

DESPI-K154Z90 is designed for 1.54 inch SPI color e-paper display GDEH0154Z90. It can boost the driving voltage of Good Display"s 1.54 inch e-paper display. Your image holds indefinitely without power – put up your image, then shut down the power. Once these e-paper modules are updated they don"t require any power and can actually be disconnected entirely and the content will remain on the display indefinitely.

Also it preserves interfaces for 6 Pin touch panel and 6 Pin front light, which users can test. And this module board contains a Flash chip W25Q128 which is a serial NOR Flash memory with capacity of 128M-bit(16M-byte), making it easier for users to store pictures, libraries and other related data. And SD card slot is also reserved in the module, which users can choose to add an extra micro SD card. Therefore, Flash chip and SD card slot address the user need for more storage.

● SPI interface. It can be used on Raspberry Pi/Raspberry Pi Pico/ Arduino/ EPS8266/ ESP32/ STM32 Platform. We could provide the driving board, if you need, contact us please.

1) BUSY: BUSY signal of e-paper. When the e-paper is refreshing, the BUSY pin sends out "busy" signal to MCU, the MCU can not read and write the e-paper IC; When the e-paper refresh is completed, the BUSY pin sends out "free" signal, the MCU can read and write the e-paper IC. GDEW series e-paper busy state is high level (GDEH series is low level), and free state is opposite.

This fantastic 5 inch HDMI LCD display with USB touch screen is compatible with almost all the operating systems on the market. Utilizing pre-existing Linux/Windows/Mac drivers, this 800 x 480 touch screen will help you hit the ground running. Resistive touch function gives the user full control over any device. It supports Windows XP SP3, Windows 7, Windows 8, Windows 8.1, Windows 10, Android 4.2, Windows CE7, Ubuntu and Debian. With the built-in EDID device information, your equipment will get identified in no time. Meanwhile, its USB touch can fulfill the functions of the right mouse button and drag and drop.

With the special design power circuit for this display, it requires less than 150mA current to get it running with perfect performance. When you do not need the touch screen function, all you need is to plug a HDMI line to get it work. We have successfully run the tests on PC, laptop, Raspberry Pi, Beaglebone Black, Udoo, Compute stick, SLR camera.

When you use this display with a Raspberry Pi, please edit config.txt to set the HDMI to the native 800x480 in case it doesn"t detect the resolution properly. The easiest way to edit the config.txt is to put the Pi TF card into an everyday computer and edit config.txt with any text editor. Save it and it is ready to rock.

This black and white 200x200 epaper display module is a perfect size for small, low-power electronic shelf labels. Once the epaper"s eink image is shown, it remains visible with zero additional power!

Built-in voltage generation requires only a few external components. Ultra thin with a depth of 1.05mm and weight of only 4 grams, epaper has a clear advantage over other display technologies for small handheld battery-operated devices or devices powered by solar. Epaper displays are growing rapidly in popularity and can be scanned by barcode readers.

Use our sample code in the files section to display your own images. Our open-source demonstration code runs directly on a low cost Seeeduino v4.2 (3.3v Arduino clone) .

All fans of Raspberry Pi perfectly understand the phenomenon of Raspberry, which has enthusiasts in many areas. It is used in everyday life, but also in robotics, programming and industry. Raspberry Pi is perfect for modern intelligent building systems. It can be expanded with various types of peripheral devices, acquiring specific features. Among them there are displays, which are available in our offer in different versions. They come in 0.9", 1.3", 1.44", 1.54", 2", 2", 2.13", 2.2", 2.4", 2.6", 2.7", 2.8", 3.2", 3.5", 4", 4.,2", 4.3", 5", 5.83", 7", 7.50", 10", 10.1", 11.1" and 14" screens. They also differ in the technology used, which ensures a specific image quality. We offer LED and OLED matrix displays, monochrome and segmented, consisting of LEDs, e-paper, alphanumeric displays as well as LCD IPS, LCD TFT. The displays work with boards using GPIO+DPI, HDMI, HDMI+GPIO, HDMI+USB, DSI, GPIO, I2C, SPI, SPI + I2C, as well as USB. The interface through which the screen connects to the Raspberry Pi module must be operable, otherwise there is a risk of interference and the connection quality will be poor.

We offer screens dedicated for special housings as well as modular laptops based on Raspberry Pi. If you use the display and your Raspberry frequently, an e-paper display is a good choice for you, which is more convenient for human eyesight. It has other advantages, it is very energy-efficient, consumes little energy, so it will be a good choice for those who are still looking for savings, while increasing the comfort of their daily life.

The displays can be used on a daily basis as well as for large robotics and electrical projects. They can be used for information purposes, displaying current data with the parameters of the specific equipment or system with which they work. This function is very often performed by monochrome and segment displays. Or maybe you would like to create your own e-book reader. You will need an energy-saving and eye-safe e-paper display. Touchscreens are very well suited for game controllers and drawing devices. The use of Raspberry Pi displays is therefore very wide.

Adjust the type of display to your design and purpose. Decide on the option that best matches your expectations and needs. Build your Raspberry Pi, make an ambitious project or simply use the Raspberry Pi as an alternative to your laptop or iconic PC.