instro is an open-source Python library for scripting and automating test equipment (power supplies, multimeters, electronic loads, DAQs, and more) from one unified, typed API. Code against an instrument category once, then swap vendors with a single configuration change. When you want to capture the data, attach a publisher to stream it to a file, Nominal, or a destination of your own.
Start here
Quickstart
Drive a simulated power supply end-to-end in about five minutes. No hardware required.
Overview
Understand the architecture, key concepts, and design philosophy.
Installation
Install from PyPI with
pip or uv, plus the optional vendor extras you need.Examples
Browse runnable examples for every instrument category.
Supported instruments
Power supplies
InstroPSU: B&K Precision, Keysight, Rigol, Siglent, and TDK Lambda.
B&K Precision 9115
B&K Precision 914x
Keysight E36100
Rigol DP800
Siglent SPD3303
TDK Lambda Genesys
Electronic loads
InstroELoad: B&K Precision 85xx series via SCPI/VISA.
B&K Precision 85xx
Digital multimeters
InstroDMM: Agilent/HP/Keysight 34401A, Keysight 34461A, Keithley 2400, and more.
Agilent/HP/Keysight 34401A
Keysight 34461A
Keithley 2400
Oscilloscopes
InstroScope: Keysight 1200X, Tektronix 2-series, and Siglent SDS1000X-E.
Keysight 1200X
Tektronix 2-series
Siglent SDS1000X-E
Data acquisition
InstroDAQ: National Instruments, LabJack T-Series, Keysight 34980A.
National Instruments
LabJack T-Series
Keysight 34980A
I2C
I2CInterface: Total Phase Aardvark with declarative system definitions.
Total Phase Aardvark
Flow controllers
InstroFlowController: Alicat MC.
Alicat MC
Modbus
ModbusDevice: any Modbus TCP or RTU device.
Modbus TCP
Modbus RTU
EtherNet/IP
EtherNetIPDevice: Allen-Bradley and CompactLogix-class PLCs.
Allen-Bradley
CompactLogix
Custom instruments
Build a new instrument type or vendor driver againstInstrument.
Instrument
Create your own Instrument category using the tools in
instroRequest a driver
Start a thread on our community forum
Publishing data
Publishers
Stream measurements to Nominal Core, Nominal Connect, or a local file with a single line of configuration.