Wiznet makers

I2C bus basics: 2‑wire SDA/SCL, address‑based multi‑device connection, version evolution from Philips to NXP

Brief intro to computer BUS: origin from ENIAC, modern bus definition, data‑address‑control buses and master‑slave roles.

RP2040 MicroPython demos for UART RXIDLE and TXIDLE interrupts.

Compares MicroPython v1.23.0 and v1.26.0 on RP2040, covering newly supported UART interrupts and trigger events to replace polling.

a Geiger Counter data logging system with Ethernet connectivity, SD card support, and a web-based monitoring interface.

This tweet explains RP2040 interrupt architecture, IRQ allocation, NMI mechanism and NVIC priority rules.

This tweet introduces MCU interrupt concepts, polling contrast, interrupt types and NVIC fundamentals.

This tweet introduces the basic characteristics and working principle of stepper motors.

This tutorial covers RS485 fundamentals, MAX13487 chip, and a MicroPython RS485 implementation on Raspberry Pi Pico.

This tutorial introduces RS232 standards, MAX3232 level conversion, and implements an RS232 communication class with XON/XOFF software flow control on Raspberry

This tutorial explains MicroPython select poll() I/O multiplexing and demonstrates serial port event monitoring, data reading and exception handling.

This content covers serial bus servo basics, LX-1501 protocol and a MicroPython SerialServo driver for servo control and data reading.

This article introduces the JY61 six-axis gyroscope, covering its UART data frame protocol, checksum calculation, data conversion and available control commands

This experiment realizes UART send & receive on Fengya No.1 board, with bytes decoding, LED prompt and verification using XCOM.

This tutorial covers RP2040 UART hardware overview, MicroPython machine.UART APIs, IO multiplexing with select module, and serial debugging tools including CH34

Room Environment Monitoring

VFD Clock with SNMP and NTP

This article details Raspberry Pi Pico UART hardware architecture, covering FIFO buffer, DMA, interrupts, baud rate calculation and hardware flow control.

This tutorial covers UART flow control, common data verification algorithms and pipeline optimization to boost serial communication throughput.

This tutorial explains UART asynchronous serial communication, frame structure, parity check, baud rate concepts and data transmission workflow.

This tutorial explains UART asynchronous serial communication, frame structure, parity check, baud rate concepts and data transmission workflow.

This tutorial explains embedded communication basics including transmission modes, duplex types, rate concepts, interfaces, buses and protocols.

This article introduces communication fundamentals and classifies mainstream wired and wireless communication protocols used in embedded systems.

This tutorial introduces 5-way joystick and implements multi-direction key detection with MicroPython GPIO interrupts.