A red battery with lightening bolt icon on a LabQuest 2 means that the battery has failed an internal test but the unit is running on AC power. There are several possible causes for this.      - The battery is missing. &n...

This information is for Android devices only. For iOS/iPadOS devices, see Graphical Analysis GW for iOS FAQ and Troubleshooting. Graphical Analysis—Go Wireless View in Google Play* Graphical GW * Note: a change in Google...

SpectroVis Plus (SVIS-PL, discontinued) Specifications and User Guide Troubleshooting Primary Test: Are you using Logger Pro v3.14, LabQuest App v2.7.2, or Spectral Analysis v4.4 (or newer)? Secondary Test: Is the USB cabl...

When a VCB2 is upgraded, the new switches are on a raised, smaller circuit board. We also place a small silver dot after the revision number to show it has been updated. Does my VCB2 need to be recalled?...

Stepper motors are great for projects and can easily be used with an Arduino and our Digital Control Unit (DCU-BTD). If you have a stepper motor and want to use it with the DCU, first you need to figure out how to wire it. There are two basic types o...

Graphical Analysis on Android requires a minimum Android OS (see chart below), and an up-to-date Android System WebView. These are updated separately, so it is possible that the WebView component on a tablet may not have been updated in years. On...

The mBot IR remote is designed to use a CR2025 3-volt coin cell battery. We have also used a CR2032 in that remote. The last two digits in the battery code is the thickness of the battery in tenths of a millimeter, so that slightly thicker battery...

Yes. You must use the LabQuest 2 or LabQuest 3 interface to control a line on the Digital Control Unit with a Go Direct (GDX) sensor. Physically connect the DCU, connect the Go Direct sensor through software or USB. Program the control of the DCU in ...

Digital Control Unit (DCU-BTD) Specifications and User Guide Which Model DCU Do I Have? There have been three Digital Control Unit (DCU) models over the years. The current model (shown above) is black, rectangular, and has a s...

The Digital Control Unit (DCU-BTD) can be used with any DC electronic component or output device that requires only power and ground connections, such as an LED, buzzer, or fan. Take care to match the DCU power supply to the output devices. For inst...