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.
The Maker's Knife for Developers
Your electronics bench companion — offline, portable, permanent
Build software without cloud dependencies. The Maker's Knife gives developers 6 specialised tools in a single HTML file that runs entirely offline.
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
Why should Developers use The Maker's Knife?
The Maker's Knife is built for developers who need electronics & hardware tools without cloud dependencies. Resistor color codes, Ohm's law, logic gate simulator, PWM calculator, I²C reference, and a binary clock. Your electronics bench in a file.
Does The Maker's Knife work offline?
Yes. The Maker's Knife is a single HTML file that runs entirely in your browser. No internet connection required. Your data never leaves your machine.
Is The Maker's Knife a subscription?
No. The Maker's Knife is a one-time purchase ($39). No monthly fees, no renewals, no price increases.
What tools are included in The Maker's Knife?
The Maker's Knife includes 6 tools: Resistor Colour Code Calculator, Ohm's Law Calculator, Logic Gate Simulator, PWM Calculator, I²C Address Reference, Binary Clock. All accessible from a single HTML file.
Can I try The Maker's Knife before buying?
Yes. Every product page includes an interactive demo you can try in your browser. No signup required.
No cloud One fileOne-time purchase
Get The Maker's Knife — $39Sovereignty as a Service