KrAjWuuIF

Numeric keypad (RP2040, screen, knob)

Overview

The project uses the Raspberry Pi pico development board, compatible with development boards from YD and Wuming Technology. It adopts the QMK solution.

There's a problem with the PCB: a fly-wire needs to be connected from the development board's 5V to an RGB LED's VDD for the LED to light up.

The attached .uf2 file is the firmware; simply drag and drop it into the Raspberry Pi's disk to burn it. This is the simplest burning method, which is why I chose the Raspberry Pi.
The other two components are the casing and the positioning board.
The screen requires a 0.91mm IIC screen, costing approximately 8 yuan. The screen needs to be separated from the board using alcohol or board cleaner before it can be inserted. (A modeling error occurred.) The screen board is placed under the positioning board and connected to the IIC interface with a fly-wire.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2026-03-27 13:21:30

125KHz access control card reader
I want to make a 125KHz access control card reader recently. The card reading distance is about 10cm, using the U2270B chip. Is there any friend who has done this before? Can you give me some referenc
Let's talk about everyone's helpless experience of buying things on Taobao
A few days ago, I bought an Atex heat gun and a magnifying glass from the so-called East China Atex general agent in Shanghai. When I opened the box, the packaging cover inside seemed to be fished out
EEWORLD University Hall----Live Replay: Application of Infineon Industrial Semiconductors in the Motor Drive Industry
Live replay: Application of Infineon Industrial Semiconductors in the Motor Drive Industry : https://training.eeworld.com.cn/course/5587
Lynk & Co 360 Panoramic Computer Disassembly
[i=s]This post was last edited by littleshrimp on 2022-1-3 17:42[/i]This is a LynkCo 360 panoramic computer that has been soaked in water, and most of the screws have been removed by others.After remo
LPC213X ARM7 drives T6963 240*128 LCD
Newbie post, attached are some programs I just wrote, LPC213X ARM drives T6963 240*128 LCD, with pictures, ASCII, Chinese characters mixed reality, and a small progress bar. It is completely an ARM7_G
【Design Tools】FPGA Standard Interface Card Specification
FPGA standard interface card specification.

Datasheet More

Circuits More