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The bench measures and drives the parts of an RC (radio control) drive system: motor and ESC (electronic speed controller), servos, receiver buses, propeller balance and battery condition. This page lists the original requirements and how each is met.

The original requirement list, in German:

• Eingang für externe Stromsensoren (I²C)
• ESC-Programmierer für das, was geht — im Moment AM32 und BLHeli garantiert, YGE mal anfragen oder über EX-Bus einfach machen
• Wuchten von Systemen über Beschleunigungssensor und Positionssensor
• Unterstützung Reglerprogrammierung, soweit es geht
• Servo-Tester mit allem und scharf: SBUS und andere Protokolle
• Servo-Programmierung, wenn mir jemand Programmiergeräte ausleiht und das Reverse Engineering klappt, respektive über EX-Bus
• Logviewer für diverse Formate

Requirement	Implementation
External current sensors over I²C (Inter-Integrated Circuit)	On the I²C buses of the IO board's measurement coprocessor, the second of its two RP2354B (hardware/docs/IOBoard.md). The panel's I²C bus is reserved for the touch controller and the I/O expander.
ESC programmer (ESCs with AM32 and BLHeli_S firmware required)	One-wire half-duplex bootloader protocol at 19,200 baud on a PIO (programmable input/output) state machine
Balancing with accelerometer and index sensor	Both sensors on the coprocessor, sampled on one timebase
Servo tester with S.BUS and other protocols	Hardware PWM (pulse-width modulation) outputs; one PIO program per serial protocol
Servo programming	The Hitec D-series protocol is published; other brands need a programmer to capture
Log viewer for several formats	shared/logfile: a CSV (comma-separated values) reader that accepts decimal comma or point, a units row and ragged rows

The state of each requirement is in STATUS.md.

• Configuration over JETI EX Bus. The EX Bus specification restricts remote configuration to JETI products and does not document it. EX Bus support covers channel values and telemetry.
• Parameters of ESCs with BLHeli_32 firmware. The information needed to read them is not published; a request to the rights holder was declined in August 2026. Details.

Every protocol is implemented from its published specification or, where none is published, from captures of the wire on hardware the project owns: the programming protocol of KST and Chaservo servos is the one case. Most open implementations of these protocols are GPL (GNU General Public License) or AGPL (GNU Affero General Public License), which is incompatible with this repository's MIT (Massachusetts Institute of Technology) licence. A protocol without a published specification and without a capture of its wire is not implemented.