MCP2221A USB-to-I2C/UART Bridge: Schematic Checklist
A practical MCP2221A schematic checklist covering 3.3 V and 5 V power options, VUSB, USB-C, UART levels, I2C pull-ups, reset, packages, and a real KiCad review example.
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MAX17048 Fuel Gauge Circuit: Schematic Checklist for LiPo Designs
A practical MAX17048 fuel gauge circuit and schematic checklist covering battery wiring, I2C, alerts, quick-start, firmware, footprint review, and a real KiCad example.
nRF52840 Pinout and Schematic Checklist: Power, USB, RF, QSPI, and PDM
A practical nRF52840 pinout and schematic checklist covering package selection, power, USB, RF, clocks, debug, QSPI, PDM, and a real KiCad project.
Buck Converter Circuit Design: Schematic, Components, and a KiCad Example
A practical guide to buck converter circuit requirements, schematic blocks, component selection, and review using a real SpeedUp-generated KiCad example.
Electronic Circuit Design: From Requirements to an Editable KiCad Schematic
A practical electronic circuit design workflow from product requirements and block diagrams to structured schematic sheets, BOM context, and editable KiCad files.
QSPI Flash Circuit Design: Pinout, Power, and an nRF52840 Example
A practical QSPI flash circuit guide covering SPI versus QSPI, pin roles, power, pull-ups, decoupling, controller compatibility, layout, and a real nRF52840 schematic example.
PDM Microphone Circuit Design: Power, Clock, Data, and MCU Interface
A practical PDM microphone circuit guide covering power, decoupling, clock, data, channel select, MCU PDM peripherals, PCB acoustics, and a real nRF52840 example.
ESP32 Pinout Guide for Schematic Design: GPIO, Boot, ADC, I2C, and SPI
A schematic-focused ESP32 pinout guide covering module pins, boot constraints, input-only GPIOs, ADC, I2C, SPI, power, reset, and a real pin-assignment example.
Schematic Diagrams: How to Read, Create, and Organize Circuits
A practical guide to understanding, reading, creating, and organizing schematic diagrams, illustrated with a real multi-sheet KiCad project.