What are you trying to do?
Start with the task. Each path leads to one canonical reference, so specifications and safety guidance do not drift between pages.
Set up a controller
Go from first power-on to a configured controller.
Open quickstartResolve a fault
Identify an active protection state or LED indication.
Fault and LED referenceTroubleshoot behavior
Work through power, connection, motor output, and thermal symptoms.
Troubleshooting guideUpdate firmware
Review releases or open the compatible browser flashing tool.
Open firmware toolsTechnical facts, in one place.
Use product documentation for values and wiring details. The support hub points to those sources instead of repeating them.
Quick answers to frequent symptoms.
Search filters these answers. For full diagnostic procedures, continue into the linked troubleshooting guide.
01I have power but the motor won't move.
The controller will not drive the motor until it sees both a throttle command anda direction. On the dashboard page of the web app, confirm a throttle input is registering when you press the pedal, and that a direction (forward or reverse) is active — the controller will not turn the motor without one.
If the throttle reads zero while you're pressing the pedal, the problem is on the input/wiring side, not the motor. Work through the full troubleshooting guide next.
02The motor spins the wrong way.
Reverse the polarity of the motor connection — swap the two motor leads — or change the active direction on the direction page of the web app. Confirm the direction reads as expected on the diagnostics page; if it's wrong there, fix it in the app rather than by re-wiring.
03The controller runs for a few seconds, then shuts off.
There are three common causes — check them in order:
The battery profile's undervoltage threshold may be too high for the pack under load — review the battery profile and voltage protection state. A staged over-current threshold may also be qualifying — compare measured current with the continuous, surge, and impulse stages in Diagnostic. Use Max drive current on the Essential page to change normal current authority. Finally, check the Dashboard for any other active fault.
The fault & LED reference explains what each fault means and how it latches and clears.
04The motor is getting too hot.
Heat in the motor comes from current. Lower Max drive current on the Essential page if it's running hot; do not lower a protection trip threshold as a normal current control. Running a motor much above 1.5× its rated voltage shortens its life rapidly, so back the voltage down if you've over-volted it. And too tall a gear ratio (wheels spinning faster) raises both starting and driving current, which shows up as heat — gear it down or use a lower Max drive current setting.
05The web app won't load — what address do I use?
Join the controller's Wi-Fi access point (PW-AP-1, password SpeedControl— printed on the board) and browse to http://192.168.50.1. The app is served locally from the controller, not the internet, so stay on its network even if your phone warns about “no internet connection.”
If the page still won't open, the troubleshooting guide covers DNS, HTTPS-upgrade, and cached-asset issues in detail.
06Which motors and voltages are supported?
The DRV1100BDV5 drives a single two-wire brushed DC motor at up to 100 A continuous. The input range is 12–85 VDC — it accepts 12 V, 18/20 V, 24 V, 36 V, 48 V, 60 V, and 72 V nominal packs, with 20S Li-Ion (max ~84 V charged) as the highest supported battery. Never connect a source that can exceed 84 V. Full numbers are in the specifications.
07What does the RST recovery input reset?
Connect the RST pad to 3.3V during boot-up to restore the default Wi-Fi credentials, developer settings, primary board role, and extension default. It preserves motor, battery, direction, and protection settings, so it is not a full factory reset. For a complete wipe and reinstall, use the web flasher over USB with the full-erase option.