What we do
Connector pinouts, PSU and thermal sizing, battery and power bank capacity, appliance running costs and solar yield: the questions that come up at a bench, where a wrong pin or an optimistic figure costs real equipment.
How far to trust it
- Pinouts come from public standards and vendor documentation, and each one lists a measurement that confirms it. Check the datasheet for your exact part and board revision before applying power.
- Calculator defaults are typical or manufacturer-rated figures, not measurements of any product. Replace them with numbers you have measured for a real answer.
- Formulas are shown on every calculator, so you can check the working.
What we don't do
- We don't require an account, and we never charge for a tool.
- We don't store what you enter: the calculators work it out on your own device.
- We don't sell personal data. See our privacy policy.
Contact
Found a pinout or a result that looks wrong? Tell us on the feedback page. Corrections to reference data are the most useful thing anyone can send.