Practical Electronics Tools, Guides, and Debug References
Start with a calculator, pinout, or bring-up guide that is actually usable in a real design review.
NodeLoop focuses on first-pass decisions, wiring sanity checks, and fast technical refreshers for PCB, power, interfaces, and embedded debug work.
Learn more about us · Share ideas
Start Here
Need a connector or pinout?
Jump straight to a high-signal reference instead of hunting through forum posts.
Start Here
Sizing a PCB structure?
Use a calculator first, then read the guide behind the model before sign-off.
Start Here
Debugging bring-up?
Follow a proven command sequence or pin map before chasing the wrong failure mode.
Trending Content
Popular guides and tools, powered by community feedback.
AWG ↔ mm² Converter, Ampacity & Voltage Drop (with Visualization)
Convert AWG to mm and mm², check ampacity (with bundling derating), compute voltage drop with temperature/material, and compare gauges visually. Includes exportable reference table.
USB Device Identifier: Find any USB device's VID & PID
A free online tool to identify any unknown USB device. Just plug in your device, get its Vendor ID (VID) and Product ID (PID), or search our database to find the right drivers.
M.2 Pinout Generator
Interactively generate M.2 connector pinouts based on module key (A, B, E, M) or application (SSD, Wi-Fi, WWAN). Filter pins and view keying diagrams. Find the specific M.2 pin configuration you need.
USB PD Message Decoder: PDO, RDO, AVS and Cable VDO
Decode USB Power Delivery message bytes, Source PDOs, Request RDOs, SPR/EPR AVS objects, contract sequences, and cable Discover Identity VDOs locally.
Explore by Category
Tools
View all ->USB PD Message Decoder: PDO, RDO, AVS and Cable VDO
Decode USB Power Delivery message bytes, Source PDOs, Request RDOs, SPR/EPR AVS objects, contract sequences, and cable Discover Identity VDOs locally.
M.2 Compatibility Checker: Key, Size, Bus and BIOS
Check an M.2 SSD, Wi-Fi, CNVio, or WWAN module against a host socket's key, length, PCIe, SATA, USB, SDIO, and firmware support.
USB-C PD Contract Checker: Source, Cable and Sink
Check whether a USB-C source, cable, and sink can negotiate the requested voltage, current, and power across SPR, PPS, AVS, and EPR modes.
UART Baud Rate & 8N1 Throughput Calculator
Calculate UART frame overhead, real 8N1 throughput, transfer time, clock divider, actual baud rate, and baud error.
Power Path and Ideal Diode Selector
Compare Schottky diodes, discrete P-MOSFET stages, and ideal-diode controllers for low-drop power paths, OR-ing, and reverse-current protection.
HID Report Descriptor Visualizer & Builder (USB HID Tool)
Paste hex or C arrays to decode HID report descriptors, then edit visually and export HEX, C, TinyUSB, or STM32 snippets. Includes ready-made keyboard, mouse, gamepad, and media-key templates with live explanations.
Voltage Divider Calculator (Loading, Power, ADC & Logic Level Use Cases)
Best-in-class voltage divider calculator: Vout, current, resistor power, optional load (Rload), ADC input sizing tips, and practical guidance for UART/I²C/logic level shifting.
View All 38 Tools
Browse the full collection of design tools and calculators.
Guides
View all ->mSATA Pinout: 52-Pin Mini PCIe Compatibility Guide
Read the 52-pin mSATA connector pinout, identify SATA TX/RX pairs and power pins, and check compatibility with Mini PCIe and M.2 sockets.
Find the Right USB Driver from VID & PID: Windows, Linux, macOS
Identify an unknown USB device from its VID/PID, check its interface class, and find the correct driver without relying on unsafe download sites.
Hammerstad & Jensen Microstrip Formula Explained: Impedance and Effective Permittivity
Understand the Hammerstad & Jensen microstrip equations for characteristic impedance and effective permittivity, plus thickness correction, assumptions, and practical PCB limits.
I3C Bus Explained: A Modern Sensor Bus (and the Successor to I2C)
An engineering-focused introduction to the MIPI I3C bus. Learn why I3C exists, how it stays compatible with I2C, how dynamic addressing (DAA) works, what Common Command Codes (CCC) are, and how features like in-band interrupts (IBI) simplify sensor designs.
UART 8N1 Explained: Frame, Baud Rate, Wiring & Voltage Levels
Understand why UART 8N1 uses 10 bits per byte, calculate real throughput and baud error, then verify TX/RX wiring, voltage levels, and framing.
High-Speed PCB Routing Cheat Sheet (Edge-Rate Based)
A practical, edge-rate based checklist for routing fast digital signals: when a trace becomes a transmission line, return paths, termination, differential pairs, vias, and crosstalk.
Thermal Vias & Copper Spreading (PCB Heat Transfer Guide + Estimator)
Design thermal vias that actually work: what matters (via count, plating, board thickness, fill), how copper spreading limits performance, and a simple estimator to sanity-check your layout.
View All 18 Guides
Explore all available guides and learning resources.
Projects
View all ->Browser Hardware Lab (WebSerial / WebBluetooth / WebUSB)
A no-install workflow for board bring-up and interface debugging: WebSerial console + plotter, WebBluetooth GATT explorer, and WebUSB device identification.
USB Device Identifier: Find any USB device's VID & PID
A free online tool to identify any unknown USB device. Just plug in your device, get its Vendor ID (VID) and Product ID (PID), or search our database to find the right drivers.
Open Source Electronics Projects Observatory
Discover the latest and most popular open source electronics projects from the community. A curated list of repositories for ESP32, STM32, KiCad, and more.