Dot-Matrix-(A)-DIY User Guide

【User Guide】

1、Press the power switch to turn on.

【Functional interface settings】

Key1 button toggles the display.

After powering on and displaying the logo, press key1 to switch to the default hourglass display interface with a one-minute timer.

Press key1 again to enter time setting mode. The time unit is minutes (maximum 99 minutes, minimum 1 minute). The minimum value displayed can be 00, but pressing key1 will still set it to 1 minute.

It cannot save settings after power failure; you need to reset it after powering on.

-Key1 is used to enter settings and to switch displays after saving the settings.

-Key2 toggles between units and tens digits.

-Key3 is for increasing the number

-Key4 is for reducing numbers

【Schematic diagram】

Dot-Matrix-(A)

TAG： Gyroscope ESP32 1.9inch LCD RK3566 Code Industrial USB TO RS485 2CH Converter FT2232HL Grade Isolated Package Kit Raspberry Pi CM4S08032 And Compute Module PoE IO Board Industrial Isolated USB TO 4CH RS485 (B) Converter UART CH344L For Wall/Rail-Mount Serial UART Bus Servo ST3215-HS 20KG.CM High Speed Magnetic Encoder 360° Large Torque USB TO M.2 Key B 5G DONGLE For SIM8202/SIM8262/RM520/RM530 Raspberry Pi 13.3 inch FHD AMOLED 1080P Capacitive TouchScreen Display Type-C/HDMI For Computer PC ESP32-P4-ETH RJ45 POE DSI/MIPI 10.1 inch LCD Display Touchscreen/CSI Camera/Audio Speaker AI Deepseek PCB800099 Raspberry Pi 5 PCIe to 4-CH PCIe FFC HAT Board Pi5 4 Channels Raspberry Pi 5 PCIe to USB3.2 Gen1 Hub 5Gbps For Raspberry Pi OS Drive free Raspberry Pi 21.5inch FHD LCD 1080x1920 Capacitive TouchScreen Display For Raspberry Pi/Jetson Nano/ Raspberry Pi RP2040 Raspberry Pi 5 PCIe to M.2 SSD Accelerometer ESP32 MLX90641 RP2040 Camera

Cyberpunk LED Matrix Hourglass Gravity Sensor DIY Countdown Timer Clock STEM Educational Soldering Project for Beginners & Adult