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Fix calibration visualization

This commit is contained in:
Simon Alibert 2025-03-20 14:33:36 +01:00
parent 34cd1e47bf
commit 02a1cf6a4e
1 changed files with 26 additions and 21 deletions
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47
lerobot/scripts/calibration_visualization_so100.py
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@ -17,7 +17,8 @@ from dataclasses import dataclass
import draccus
from lerobot.common.motors.feetech.feetech import (
from lerobot.common.motors import MotorsBus
from lerobot.common.motors.feetech.feetech_calibration import (
adjusted_to_homing_ticks,
adjusted_to_motor_ticks,
convert_degrees_to_ticks,
@ -30,7 +31,7 @@ from lerobot.common.teleoperators.so100 import SO100Teleop, SO100TeleopConfig #
@dataclass
class DebugFeetechConfig:
class DebugConfig:
teleop: TeleoperatorConfig | None = None
robot: RobotConfig | None = None
@ -40,48 +41,52 @@ class DebugFeetechConfig:
@draccus.wrap()
def debug_feetech_positions(cfg: DebugFeetechConfig):
def debug_device_calibration(cfg: DebugConfig):
# TODO(aliberts): make device and automatically get its motors_bus
device = SO100Teleop(cfg.teleop) if cfg.teleop else SO100Robot(cfg.robot)
visualize_motors_bus(device.arm)
def visualize_motors_bus(motor_bus: MotorsBus):
"""
Reads each joint's (1) raw ticks, (2) homed ticks, (3) degrees, and (4) invert-adjusted ticks.
"""
device = SO100Teleop(cfg.teleop) if cfg.teleop else SO100Robot(cfg.robot)
device.connect()
motor_bus.connect()
# Disable torque on all motors so you can move them freely by hand
device.arm.write("Torque_Enable", 0, motor_names=device.arm.motor_names)
print("Torque disabled on all joints.")
# values_dict = {idx: 0 for idx in motors_bus.motor_ids}
# motor_bus.write("Torque_Enable", values_dict)
# print("Torque disabled on all joints.")
try:
print("\nPress Ctrl+C to quit.\n")
while True:
# Read *raw* positions (no calibration).
raw_positions = device.arm.read_with_motor_ids(
device.arm.motor_models, device.arm.motor_indices, data_name="Present_Position"
)
raw_positions = motor_bus.read("Present_Position")
# Read *already-homed* positions
homed_positions = device.arm.read("Present_Position")
# # Read *already-homed* positions
# homed_positions = motor_bus.read("Present_Position")
for i, name in enumerate(device.arm.motor_names):
motor_idx, model = device.arm.motors[name]
for name, raw_ticks in raw_positions.items():
idx = motor_bus.motors[name][0]
model = motor_bus.motors[name][1]
raw_ticks = raw_positions[i] # 0..4095
homed_val = homed_positions[i] # degrees or % if linear
# homed_val = homed_positions[i] # degrees or % if linear
# Manually compute "adjusted ticks" from raw ticks
manual_adjusted = adjusted_to_homing_ticks(raw_ticks, model, device.arm, motor_idx)
manual_adjusted = adjusted_to_homing_ticks(raw_ticks, model, motor_bus, idx)
# Convert to degrees
manual_degs = convert_ticks_to_degrees(manual_adjusted, model)
# Convert that deg back to ticks
manual_ticks = convert_degrees_to_ticks(manual_degs, model)
# Then invert them using offset & bus drive mode
inv_ticks = adjusted_to_motor_ticks(manual_ticks, model, device.arm, motor_idx)
inv_ticks = adjusted_to_motor_ticks(manual_ticks, model, motor_bus, idx)
print(
f"{name:15s} | "
f"RAW={raw_ticks:4d} | "
f"HOMED_FROM_READ={homed_val:7.2f} | "
# f"HOMED_FROM_READ={homed_val:7.2f} | "
f"HOMED_TICKS={manual_adjusted:6d} | "
f"MANUAL_ADJ_DEG={manual_degs:7.2f} | "
f"MANUAL_ADJ_TICKS={manual_ticks:6d} | "
@ -93,8 +98,8 @@ def debug_feetech_positions(cfg: DebugFeetechConfig):
pass
finally:
print("\nExiting. Disconnecting bus...")
device.disconnect()
motor_bus.disconnect()
if __name__ == "__main__":
debug_feetech_positions()
debug_device_calibration()