The A50S was designed specifically for use in Beatleweight and Featherweight combat robots. It runs the extremely popular VESC®*-Project firmware.
Featherweight Drive - Slice of LiFe (Blue)
12S A50S with sensored 5045 motors for drive
Weapon/drive on our Beatleweight - Just a wee Slice (Blue)
4S A50S with Repeat Max for drive
A50S with T-Motor MN4010 Hub motor bar for weapon
Included in the package
- A50S V2.3c
- XT30 connector
- MR30 connector and cable cover
- Pico-clasp 20pin connector shell + double ended precrimped wires (please select how many you require above)
- Capacitor - solder on the cable as close to the A50S as possible.
Quick tips on setup
- Please attach included capacitor as close to the unit as possible.
- ONLY USE 1 BEC, do not connect the 5v wire on all but one or the BEC can be damaged! Or connect a diode inline to prevent backfeeding.
- We recommend detecting motors using the FOC motor setup wizard. This will automatically find the correct settings for your motor.
Current Handling - Motor current
- 20A (motor) continuous with no additional cooling, no heatsink
- 40A (motor) continuous with heatsink
- 80A (motor) burst (4s with no heatsink)
Mechanical Features
- Dimensions: 35.5 x 21 x 13.8mm without connectors,
- Weight ~11g ~30g with heatsink
- Conformal coated
- 3D models avaliable here: https://drive.google.com/drive/folders/1Uu2ekqWRjQy-1kAd9qATjfwv0aw9FCOZ?usp=sharing
Electrical Features
- CANBus
- Phase filters
- Integrated 500mA 5V BEC
- Aux power input 6-52V
- EEPROM for persistent data
Electrical Connections
- Amass XT30 Battery input
- Amass MR30 Motor output
- MicroUSB for connection to VESC®*-Tool
- 20 Pin Pico-Clasp connector for IO, see below image for Pinout
Hall, Motor temp, 5v, 3.3v, SWD, External ADCs, SPI, I2C, PPM, CANBus, Aux power
Motor Commutation Modes
- FOC - Sensorless, Hall Sensors, HFI
- BLDC - Sensorless, Hall Sensors
- DC - For driving brushed DC motors on outputs A and C.
Motor Control Modes
- Current - Controls current (torque) to motor irrespective of duty cycle
- Duty Cycle - Controls duty cycle sent to motor irrespective of current
- PID RPM control - Controls motor RPM using a PID loop
Control Interfaces
- PPM
- UART
- CANBus (supports UAVCANv0)
- ADC
Voltage Rating
- 8S Model: 6-35v, 2-8S LiPo (available on request)
- 12S Model: 6-52v, 2-12S LiPo
Safety Features
- Active current limiting - actively limits motor current to stay below programmed limit
- Software over current protection - stops motor running if the current exceeds programmed limit
- Slow temperature cutoff - ramps down motor current when approaching programmed max temperature
- Battery voltage cutoff - ramps down motor current when approaching programmed voltage cutoff
- Under / Over Voltage cutoff - stops motor running if the voltage goes outside the programmed range
Programming features - using VESC®* Tool
- Adjustable current limits, Battery and Motor current are independently controlled
- Adjustable voltage limits
- Adjustable RPM limits
- Adjustable Power limits
- Adjustable duty cycle limits
- Adjustable regenerative braking
- Adjustable throttle curves and ramping time
- Real time and Sampled Data monitoring and graphing
- Automatic motor detection and tuning
Motors tested
- 1806
- TP2040
- 4248
- 4250
- 5065
- 5045 Sensored
- MAD M9C12
- ThrustMe thruster
- XAG A16
The A50S runs the popular VESC®*-Project firmware by Benjamin Vedder.
* VESC is a registered TM, owned by Benjamin Vedder