Engineering tools

Small calculators I use on real jobs. They run in your browser, written in Rust and compiled to WebAssembly, and nothing you type leaves your device.

• Modbus RTU frame builder and CRC-16

  Build a Modbus RTU request for function codes 1 to 6, 15 and 16, see every byte labelled, and get the CRC-16 in wire order.

• OEE calculator

  Work out availability, performance, quality and OEE from one shift's planned time, downtime, ideal cycle time and part counts.

• Automation payback calculator

  See how many months an automation investment takes to pay for itself from its monthly saving.