H-bridge data

• Cytron MD25HV (25 A cont, 60 A peak, 7V-58V)
  • Product page: https://www.cytron.io/p-25amp-7v-58v-high-voltage-dc-motor-driver
  • Datasheet: https://docs.google.com/document/d/1xJHVG2dc3aEtedCHf3L9NzUy5KqpxeWjeS9Lfh9XuqA
  • GitHub library: https://github.com/CytronTechnologies/CytronMotorDriver
  • Tutorial: https://www.cytron.io/tutorial/controlling-md10c-with-arduino
  • Tutorial: https://www.instructables.com/Controlling-Motor-Speed/
  • Note: Upgraded from MD30C to support 13S battery (41.6V-54.6V). MD30C was limited to 30V max.

Reasoning

Suggested H-bridges by gpt:

• Cytron MD25HV (25 A cont, 60 A peak, 7V-58V) - CURRENT CHOICE
• ~~Cytron MD30C (30 A cont, 80 A peak, 5V-30V) - Insufficient voltage rating for 13S battery~~
• Pololu VNH5019 Driver (12 A cont, 30 A peak)
  • https://www.pololu.com/product/1451?utm_source=chatgpt.com
• ~~Sabertooth 2x32: Overkill but excellent for dual motors, up to 32 A per channel~~
• ~~Simple BTS7960: Cheap dual half-bridge module, supports 43 A per channel, needs external PWM and logic control~~
• ~~IBT-4~~
  • Needs two synced pwm signals to control the H bridge, so it's harder to use. Otherwise it would work and it's cheaper

Alternative motor controllers (investigated, not adopted)

Beyond a plain H-bridge, a few integrated speed/servo controllers were considered. None replaced the MD25HV, but they're worth knowing about if the control approach is ever revisited.

Driver alternatives (click to expand)

VESC (Vedder Electronic Speed Controller)

• Advantages: multi-purpose, can be reused for other systems.
• Implementation: test with an existing unit first; ESP32 communication via UART at 3.3 V; keep the AS5600 magnetic sensor on I²C. Note: VESC DC mode doesn't include position control, so an external PID is still needed.
• Alternative unit: Flysky FSESC67100 V2 Pro on Wallapop

Kelly Controller KDS series

• Link: Kelly Controller shop
• Specs: ~60 €, 48 V (max 60 V), 50 A.
• Control: 0–5 V analog for power, REV/DIR signal for direction. Requires an external microcontroller with PID for position control.

AllMotion EZSV23WV servo controller

• Link: AllMotion EZSV23WV
• Integrated servo-control solution.

Generic PWM motor controller

• Link: Component Authority DC motor controller
• Specs: 10–55 V DC, max 60 A, CW/CCW reversible. Works like the current Cytron solution — use with an ESP32 for the same control method.