8.8 inch 11.26 inch Screen USB/BT Keyboard RPI

Connect the Raspberry Pi to the ElecLab 11.26" 440x1920 HDMI LCD Screen Display and add a Bluetooth keyboard to form a microcomputer system.

Description

Connect the Raspberry Pi to the ElecLab 11.26" 440x1920 HDMI LCD Screen Display and add a Bluetooth keyboard to form a microcomputer system. The 3D printed shell uses white photosensitive resin and industrial yellow spray paint.
The next step is to make a USB/Bluetooth dual-mode keyboard, and the PCB is already being made.

Of course, we can also use an 8.8-inch display. This size can match the 9-inch keyboard very well, and the PCB board has been welded. It uses the RISC-V CH582 chip with Bluetooth functionality.

3D printed case: https://github.com/eleclab-rpi/7.84_8.8_11.26INCH_HDMI
8.8 inch screen: https://www.amazon.com/dp/B0CSVB4NPZ
11.26 inch screen: https://www.amazon.com/dp/B0CTMYWPSP
9 inch keyboard: https://www.amazon.com/dp/B0C26RZBRJ

Details

The program of the RISC-V CH582 chip has already started running initially, and the USB keyboard can run normally and stably when connected to the Raspberry Pi and PC. The length of the ElecLab 8.8-inch display can fit well with the 9-inch MINI keyboard, but the size will still be relatively small. We may need a longer screen and a normal keyboard to fit it. After searching, I found that the 11.26" display screen can match the length of the key core.

Project Logs

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5.4V 5A output test and solder NTC
ElecLab • 04/02/2024 at 01:29 • 0 comments

5.4V 5A output test, because the 5A current produces a voltage drop on the USB test line, and there is still 5.1V on the instrument.
Welded the newly arrived 10K B3950 NTC resistor to the PCB and attached it to two batteries to monitor the battery temperature.
8.8 inch 11.26 inch hdmi screen keypad pcb V02
ElecLab • 04/01/2024 at 04:15 • 0 comments

The keyboard PCB and case have been modified, and a 0.99-inch 40x160 LCD screen has been added. The battery voltage/temperature/chip temperature/charging current/discharging current are initially displayed. The battery capacity function needs to be further added. These are all tests on a single 10000mAh battery, and two batteries have not been connected in parallel. This may be a task that needs to be considered for safety.
The Beta version of the shell is designed
ElecLab • 03/21/2024 at 10:41 • 0 comments

The case was designed for a 9" mini keyboard and 8.8" strip display, and was printed and sprayed with industrial yellow paint. Found a suitable 10000mAh battery that can be installed in 2 pieces at the back of the keyboard with a total capacity of 20000mAh inside the case. The next step is to integrate the keyboard PCB and battery PCB and modify the shell to add a rotatable bracket.
The code has basically completed the function
ElecLab • 03/18/2024 at 02:44 • 0 comments

We can get a key core after removing the casing of the USB keyboard. Now the keyboard PCB code is basically completed. The USB/Bluetooth mode can work for a long time. Bluetooth can enter sleep mode if there is no input for 1 minute,
and it will wake up after pressing any key. But now there is a problem with Fn+Mute/Vol-/Vol+. It cannot be recognized on the PC. It can control mute/volume down/volume up on the Raspberry in USB mode but not in Bluetooth mode.