Need to record what's happening in a live system? For a data acquisition recorder, the first question is whether you're tracking movement or monitoring a process. That single decision separates the Racebox Micro GPS Speed Meter & Telemetry Data Logger from the Eurotherm Nanodac Invensys Recorder Process Controller Data Logger.
Quick verdict
The Racebox Micro is the pick for projects where the signal you care about is position or speed. It lists at USD 129.99. The Eurotherm Nanodac lists at USD 416.04 and is the process-control choice. If location is your variable, choose the Racebox Micro. If you're managing a process signal, choose the Eurotherm Nanodac.
Comparison table
| Product | Listed price | Condition | Core strength |
|---|---|---|---|
| Eurotherm Nanodac Invensys Recorder Process Controller | USD 416.04 | Used | Process control plus data logging |
| Racebox Micro GPS Speed Meter & Telemetry Data Logger | USD 129.99 | New | GPS speed and telemetry logging |
Where each product wins
The Racebox Micro wins when your data is about motion. Its GNSS receiver captures position and velocity for lap timing, drag timing, and speed logging, and it can talk to your software through NMEA over Bluetooth. Because the device is compact and has standalone logging, it fits mobile projects without needing a big industrial setup.
The Eurotherm Nanodac wins when data is tied to control. It's a paperless recorder with process-control input and output options, so it can log a process and act on it. If data collection is part of a broader control strategy, the Eurotherm Nanodac matches that workflow better than a GPS-focused logger.
Product notes
Eurotherm Nanodac Invensys Recorder Process Controller
The Eurotherm Nanodac is a different kind of data acquisition recorder: it's also a process controller. Multiple universal analog inputs feed the recorder, and relay outputs let it respond to what it measures. Ethernet and a USB host port move logged data out, while the color display keeps process values visible up front. This unit is used and was removed from a working system, so expect light scratches and minor cosmetic marks on the bezel. That used condition is the main trade-off: you get a functional industrial controller, but you also accept the wear from prior service. For someone already working with process instrumentation, the combination of recording and control in one box can simplify a setup. If your workflow needs control as much as recording, this is the direction to go.
Racebox Micro GPS Speed Meter & Telemetry Data Logger
The Racebox Micro is built for speed and position logging. Its 25Hz GNSS receiver gives ten-centimeter measurement precision, which is the kind of detail lap and drag timing calls for. It supports the proprietary RaceBox Protocol and the standard NMEA format over Bluetooth, and the included API documentation makes it approachable for DIY developers. Built-in storage lets it log on its own, away from a phone or laptop. That makes it a practical starting point for a custom telemetry project where you want raw GNSS data without a full instrumentation setup. The flip side is that its data is rooted in GNSS position and velocity, so it fits projects where movement is the signal you care about. For that purpose, it brings a very focused feature set.
Final choice by use case
For a GNSS-focused telemetry project, the Racebox Micro is the data acquisition recorder to start with. For a paperless recorder that also acts as a process controller, the Eurotherm Nanodac makes sense when your budget reaches the upper end of this price spread. The real question is whether the data moves with you or stays connected to a process. Answer that, and the right choice becomes clear.
