Resistor Colour Code Calculator
Click colour bands to read resistance values, or enter a value to see the matching bands. Supports 4, 5, and 6-band resistors with tolerance.
Build Software with The Maker's Knife
Your electronics bench companion — offline, portable, permanent
You need to build software. Developer utilities — offline, forever. The Maker's Knife delivers 6 purpose-built tools in a single HTML file.
The Maker's Knife gives electronics enthusiasts, students, and professionals a portable reference bench that works anywhere. Read resistor color codes, calculate Ohm's law relationships, simulate logic gates with truth tables, compute PWM parameters, look up I²C addresses, and watch time in binary — all from a single HTML file on any device.
WHAT'S INSIDE
6 tools in a single HTML file
Ohm's Law Calculator
Enter any two of voltage, current, resistance, and power — the other two are calculated instantly with unit scaling.
Logic Gate Simulator
Build logic circuits from AND, OR, NOT, NAND, NOR, XOR, and XNOR gates. Toggle inputs and watch outputs propagate with truth tables.
PWM Calculator
Compute duty cycle, frequency, period, and on/off times for PWM signals. Useful for servo control, LED dimming, and motor speed.
HOW IT WORKS
Three steps. No setup.
1
Download the file
Purchase The Maker's Knife and download a single HTML file. No installer, no account, no setup.
2
Open in any browser
Double-click to open in Chrome, Firefox, Safari, or Edge. Works on any operating system.
3
Start working
Your data stays in your browser's local storage. Nothing is uploaded. Ever.
COMPLIANCE & GEOGRAPHY
Global
Works in any country. No server dependency, no regional restrictions.
FAQ
Frequently Asked Questions
How does The Maker's Knife help me build software?
The Maker's Knife provides 6 interconnected tools for developer utilities — offline, forever. Resistor color codes, Ohm's law, logic gate simulator, PWM calculator, I²C reference, and a binary clock. Your electronics bench in a file.
Do I need an internet connection to build software with The Maker's Knife?
No. The Maker's Knife runs entirely in your browser as a single HTML file. All 6 tools work offline.
What is the difference between The Maker's Knife and cloud-based alternatives?
Cloud tools store your data on external servers, require subscriptions, and stop working without internet. The Maker's Knife is a one-time purchase ($39) that runs locally. Your data never leaves your device.
Can I use The Maker's Knife on multiple devices?
Yes. Once purchased, you can use The Maker's Knife on any device with a web browser. Copy the HTML file to as many devices as you need.
No cloud One fileOne-time purchase
Get The Maker's Knife — $39Sovereignty as a Service