Frequently Asked Questions

The main component is the Waveshare ESP32-S3-Touch-LCD-7 board, available directly from Waveshare's official store or through retailers like Allegro and Botland. The MAX3232 RS232 level shifter module can be found on electronics marketplaces such as Allegro, Botland, or your local electronics supplier. You will also need standard connectors and wiring appropriate for your vehicle installation.

ApexDuck works as a CAN bus and serial racing dashboard for a wide range of ECUs. It supports Ecumaster EMU Classic (via the EDL serial protocol), Ecumaster EMU Black (via CAN and serial), rusEFI, Zgrywus K8, Mazda RX-8 (with and without UDS), BMW E9x/E8x, and the BMW M57 DDE7 + 6HP swap over CAN. Because it reads standard CAN bus data, it can display live engine data from most CAN-enabled ECUs and engine swaps. See the full list at Supported ECUs.

Yes, ApexDuck supports Ecumaster EMU Classic via the EDL serial protocol. The connection uses the Extension port and requires a MAX3232 converter.

Yes, ApexDuck supports Ecumaster EMU Black via CAN out of the box, with no extra adapter required. If you prefer to use the EDL serial protocol instead, only then do you need a MAX3232 converter connected to the TX/RX pins.

Yes, ApexDuck supports rusEFI via CAN.

Yes, ApexDuck supports Zgrywus K8 via CAN.

Yes, ApexDuck supports the Mazda RX-8 via CAN as a passive listener. A variant with periodic UDS polling adds battery voltage and barometric pressure.

Yes, ApexDuck supports BMW E9x/E8x via CAN.

Yes, ApexDuck supports the BMW M57 DDE7 + 6HP swap via CAN (PT-CAN).

ApexDuck is powered via USB-C port, which can be connected to regular phone charger (it does not need PowerDelivery or QuickCharge - it can be a cheap charger :)

Assembly involves connecting the MAX3232 level shifter module to the Waveshare board's serial pins and wiring the RS232 output to your ECU's diagnostic port. The Waveshare board comes pre-assembled with the display attached. You will need to solder or use dupont connectors to link the level shifter. For detailed wiring diagrams and step-by-step instructions, please get in touch via the contact page.

Currently this process involves sending board to us to be flashed with initial firmware. Please use contact us page and drop us a message.

All EMU parameters that are streamed via the EDL Serial Protocol are available. See the full list in the EMU section on the Supported ECUs page.

Dash can take that information either from EMU, CAN or it can use gear calculation to figure out the gear based on Speed, RPM and provided gear ratios

Thresholds are configurable via the ApexDuck Configuration website (https://configurator.apexduck.pl/). Note that alerts are evaluated only for parameters currently visible on the active dash page.

ApexDuck supports three different threshold levels: Cold Max (blue), Warn Min (yellow), Fail Min (red)

AFR cannot be evaluated as an instant value. Certain conditions like throttle lift-off or gear shifts cause momentary AFR spikes that would trigger false alerts. Instead, AFR is evaluated within a 2-second time window — the dash only shows an alert if the threshold is continuously exceeded throughout that period.

Both values are configurable via the ApexDuck Configuration website. Set MAX_RPM to match your engine's redline and RPM_Channel to the correct EMU channel for your RPM source.

The dash layouts themselves are fixed — the number of tiles and their positions on each page cannot be moved or resized. However, every tile is fully assignable: using the ApexDuck Configuration website (https://configurator.apexduck.pl/) you can assign any available sensor or parameter to any tile, so you decide exactly what data each tile shows.

3D printed case has dimmensions of 197x115x19 millimeters

See details at Working with EMU Classic

See details at Working with EMU Black

See details at Working with rusEFI / Zgrywus K8

Yes, ApexDuck includes an odometer function, available since firmware V1.18.