Byte Sherlock

Free electronics tools

Built and maintained by the engineer behind Byte Sherlock, a laptop and mobile repair workshop in Barrackpore, West Bengal. These are the calculators we actually use on the bench.

Calculator

SMD resistor code calculator

Type 103, get 10 kΩ. Decodes 3-digit, 4-digit, R-notation and EIA-96 codes, with the formula explained and a common-codes cheat sheet.

Calculator

Voltage divider calculator

Enter Vin, R1 and R2 to get Vout, current and power dissipation — with a live circuit diagram that updates as you type. Includes 5V-to-3.3V level shifting.

Need a repair instead? WhatsApp us or see laptop repair in Barrackpore.