Requirements
Flash from your browser
Power & connect
Apply bus power to BAT+/BAT−, then plug a USB-C cable into the programming port. USB-C is programming-only and does not power the board.
Open the web flasher
Launch the browser flasher from the button above. No install — it runs entirely in the tab.
Select the serial port
Click Connect and choose the DRV1100BDV5 serial port from the browser prompt.
Flash
Pick a release and click Flash. Keep the tab focused and the cable connected until it completes.
Verify
The board reboots automatically. Confirm the new firmware version in the config panel header.
Firmware releases
| Version | Date | Notes | Actions |
|---|---|---|---|
| 0-2-11.10 Latest | Aug 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-9.12 | Jul 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-8.6 | Jul 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-7.6 | Jul 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-6.30 | Jul 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-6.28 | Jul 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-5.7 | Jul 2026 | DRV1100BDV5 controller firmware and web interface. Supports full erase & factory reinstall. | |
| 0-2-5.2_2026-06-27 | Jun 2026 | — |
Configuration parameters
Configured in the controller’s built-in web app — join the board’s Wi-Fi access point, then use the Essential, Direction, Brake, and Battery pages. Developer mode exposes the Protection pages for threshold and timer changes. Settings are stored on the controller and the firmware package supplies the board-aware defaults listed below.
| Parameter | Range | Default | Description |
|---|---|---|---|
| Max drive current | 0–300 A effective | 50 A | Normal positive-drive authority, capped by the active board's 300 A peak capability |
| Max brake current | 0–100 A effective | 50 A | Normal brake-current authority, capped by the active board's continuous capability |
| Over-current stages | 100 / 200 / 300 A | 30 s / 2 s / 1 s | Measured-current trip stages and qualification times; these are not unconditional current-command caps |
| Undervoltage threshold | 0–655.35 V storage | Battery profile | Profile-derived trip and clear thresholds; active undervoltage inhibits throttle after the configured tolerance |
| Overvoltage thresholds | 86 V / 87 V critical | Board profile | Selectively inhibits drive; clearing requires throttle neutral before drive rearms |
| High-temperature threshold | 0–90 °C | 80 °C | Inhibits throttle at the threshold and clears below 75 °C with the default setting |
| Normal throttle ramps | Ramp-up / ramp-down seconds | 0.5 / 0.0 s | Controls requested throttle slew in Normal mode |
| Normal brake ramps | Ramp-up / ramp-down seconds | 0.5 / 0.0 s | Controls requested brake slew in Normal mode |
| Autobrake timer | Milliseconds | 250 ms | Delay before enabled autobrake applies |
| Throttle input | 0–3.3 V analog | — | Analog throttle signal — do not exceed 3.3 V |
| Direction inputs (IN1–IN4) | Basic command masks or advanced per-input mappings | Basic mode | Basic mode evaluates the combined IN1–IN4 state; Advanced mode maps individual inputs |
| Accessory outputs (OUT1 / OUT2) | Throttle, Brakes, Direction, Low Voltage, Faults | Configurable | Event that switches each low-side 12 V output |
Safety
Disconnect or mechanically secure the motor before flashing — the output is disabled during an update, and the board re-arms on reboot. Never flash while the vehicle or machine can move. Do not remove power mid-flash; an interrupted update may require recovery via the web flasher’s repair mode.