Nyquist 3
- 8 analog inputs · 18-bit · ±10V
- True simultaneous sampling
- 8 analog outputs · 12-bit · 0–10V
- 16 digital I/O · 5V · PWM capable
- 802.11n WiFi (AP + Station)
- USB 2.0 · MicroSD logging
- Protobuf · JSON · CSV streaming
- 4000mAh Li-Ion battery
Open Platform
- Open-source hardware, firmware & software
- SCPI command interface over USB or WiFi
- Onboard CLI for direct device access
- No proprietary drivers or locked-down protocols
Industrial-grade simultaneous-sampling DAQ — phase-accurate measurement in a wireless, battery-powered package.
Description
True Simultaneous Sampling
The Nyquist 3 is built around a simultaneous-sampling ADC, capturing all 8 analog input channels at the exact same instant. Phase-accurate measurement for vibration analysis, power quality monitoring, and rotating machinery.
Features & Capabilities
Analog Input
- 8ch fully differential, ±10V input range
- 18bit ADC resolution (AD7609) — 262,000+ levels across 20V span
- True simultaneous sampling — all channels captured at the same instant
- Up to 1kHz sampling rate per channel
- Per-channel enable/disable and calibration (factory + user included)
- TVS diode protection on all inputs
- Connect directly to industrial sensors without external signal conditioning
Analog Output
- 8ch, 0–10V output range
- 12bit resolution (DAC7718)
- Drive actuators, set reference voltages, or generate test signals
- Enables closed-loop control applications
Digital I/O
- 16 channels, individually configurable as input or output
- 5V logic, 30mA sink/source per pin
- PWM output on select channels (configurable frequency and duty cycle)
- TVS and PTC fuse protected
Connectivity
- 802.11n WiFi (2.4 GHz) — Access Point or Station mode
- WPA2-PSK security
- USB 2.0 virtual COM port
- TCP streaming over WiFi (default port 9760)
- Multiple Nyquist units stream to one client simultaneously
Data & Storage
- Streaming formats: Protocol Buffers, JSON, CSV
- Onboard MicroSD logging — standalone recording, no PC required
- Up to 450KB/s sustained write
- Download log files over USB without removing the card
- Auto-split at configurable file size (FAT32 compatible)
- SCPI command interface
Power & Protection
- 4000mAh Li-Ion rechargeable battery, USB charging
- 2 regulated outputs: 5V and 10V (isolated, ESD-protected, clamped)
- USB 5V output from battery for external devices
- TVS diodes on all analog inputs and digital I/O
- PTC resettable fuses on digital channels
- USB and battery polyfuse protection
Software & Integration
Onboard CLI — Agent-ready
Direct text-command access over USB or WiFi. Built for scripting, automation, and emerging agentic AI workflows — query and control the device from any tool that can open a serial port or socket.
daqifi-nyquist-firmwareDesktop App
DAQiFi Desktop App (Windows) — real-time multi-channel graphing, automatic device discovery over WiFi, channel configuration, calibration management, CSV logging, and firmware updates in one app. Free with every Nyquist. No license fees, no per-seat subscriptions, no expensive software suite required.
daqifi-desktopOpen Source
Firmware (C/FreeRTOS), hardware schematics, and all client libraries under MIT/BSD. No vendor lock-in.
github.com/daqifiOpen APIs
.NET / C#, Python, LabVIEW, Java, Node-RED — plus raw SCPI from any language with socket or serial support (MATLAB, Ruby, Rust, Go, anything). No proprietary SDK lock-in.
daqifi-coreLabVIEW
Native VIs for NI test framework integration. Analog in (on-demand + continuous), digital in, PWM out, CSV logging.
daqifi-labviewNode-RED
Drag-and-drop IoT dashboards and workflow automation. Visual flow-based programming with dedicated DAQiFi nodes.
daqifi-nodeWhy the Nyquist 3
Enterprise-grade SCPI
The industry-standard command language used across professional lab instrumentation. Open protocol over USB or WiFi — your SCPI scripts work anywhere, on any stack. No proprietary drivers, no per-instrument dialect to learn.
daqifi-nyquist-firmwareBuilt to survive
Ruggedized electronically against over-voltage, ESD, short-circuits, and the everyday abuse of lab and field work. TVS-diode protection on every analog and digital I/O. PTC resettable fuses. Isolated, ESD-clamped power outputs.
Proven in extremes
Beta-tested on a zero-gravity flight for ISS fire-extinguisher research. If it works at 0 g, it'll hopefully survive your lab bench!
What You Can Measure
The Nyquist 3 reads voltage from its analog inputs across a full ±10V industrial range. Connect any sensor or transducer that outputs a voltage signal — the simultaneous sampling preserves true phase relationships across all 8 channels. With 8 analog outputs, it also generates control and stimulus voltages. The sensor determines what you measure; the Nyquist handles acquisition, streaming, and logging.
Get the Nyquist 3
SKU DAQIFI-NQ3
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