depz-sensor-sdk

Python SDK for the DEPZ USB sensor line — USB CDC-ACM sensors that speak one shared framed protocol:

• HC-SR04 — ultrasonic distance
• VL53L4CD — single-zone Time-of-Flight to ~1.3 m (host runs the ST ULD)
• VL53L8CX — 8×8 multizone Time-of-Flight, the base ToF imager (host runs the ST ULD)
• VL53L8CH — the VL53L8CX superset, adding Compact-Network-Histogram output
• VL53L5CX / VL53L7CX / VL53L7CH — 8×8 Time-of-Flight on an I2C board (63° / 90° view; L7CH adds streamed CNH histograms)
• VL53L0X / VL53L1CX / VL53L1CB / VL53L3CX / VL53L4CX — single-zone Time-of-Flight family, 2–8 m, with ST's light and histogram (multi-target) drivers on the host
• BNO086 — 9-axis IMU (host runs the SH-2 stack)
• BNO055 — 9-axis IMU with on-chip fusion (orientation, gravity, calibration)

Sync API with a background reader thread: open a device, configure it, consume a stream of decoded, timestamped results. A TypeScript SDK (@depz/sensor-sdk) mirrors this one byte-for-byte via shared golden test vectors.

Install

pip install depz-sensor-sdk

Linux: your user needs serial access (group dialout).

Quick start

from depz_sensor_sdk import open_device
from depz_sensor_sdk.vl53l8 import Vl53l8cx, RESOLUTION_8X8

dev = open_device()                    # first DEPZ sensor by USB id; raises if none
if isinstance(dev, Vl53l8cx):
    dev.init(progress=print)           # ~25 s: downloads the sensor firmware
    dev.set_resolution(RESOLUTION_8X8)
    dev.set_ranging_frequency_hz(15)   # must be >= 2 Hz
    dev.start_ranging()
    for frame in dev.frames():
        print(frame.grid())            # 8×8 numpy array of mm

open_device() finds the device by USB VID/PID; pass a serial (open_device(serial="...")), an index, or an explicit port. depz-sensor list shows what's connected.

See docs/guide.md for the full guide and docs/api.md for the API reference.

License

MIT. Bundled VL53L8 sensor-firmware blobs are © STMicroelectronics (BSD-3-Clause); see NOTICE.

Open source — source and issue tracker: https://github.com/depz-ai/depz-sensor-sdk.