Resistor Color Code & SMD Decoder
Decode 4–6 band resistor colors, reverse values into bands, and read SMD markings locally.
Related guides
Related tools
Digital Bubble Level
Measure surface tilt with a visual bullseye and a ±0.2° level threshold.
Digital Compass
Read a device heading with a manual desktop simulator and magnetic interference guidance.
Flashlight & Signal Beacon
Use a supported phone LED or a dimmable full-screen light with blink patterns, SOS and Morse signals.
GPS Speedometer
Track speed and distance from GPS with a Haversine fallback when speed is null.
I2C & SPI Bus Timing Diagram
Scan I2C device lists for address conflicts (7-bit/8-bit normalized) and inspect SPI CPOL/CPHA timing modes with pull-up and max-speed guidance. Runs entirely in your browser.
IoT Pil Ömrü Tahminleyici
Mikrodenetleyici pil ömrünü ve uyku çevrimini hesaplayın