https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL24782_%E2%80%93_DTOF_LIDAR_STL27L%2FenWSAL24782 – DTOF LIDAR STL27L/en - Versionsgeschichte2026-10-23T22:04:14ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL24782_%E2%80%93_DTOF_LIDAR_STL27L/en&diff=2843&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-06T07:57:29Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
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== Summary ==<br />
The Waveshare DTOF lidar STL27L is a compact 360° omni-directional lidar using direct time-of-flight (DTOF) ranging, performing up to 21,600 measurements per second and connecting via UART at 921600 baud.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL24782 WSAL24782 – DTOF Laser Lidar Sensor STL27L, 360° Omni-Directional Lidar, UART Bus]<br />
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== Technical overview ==<br />
* Core components: laser ranging core, wireless power transmission unit, wireless communication unit, angle measurement unit, motor drive unit, and mechanical case.<br />
* Ranging principle: direct time-of-flight; distance is derived from emission/reception times and the speed of light.<br />
* Maximum range: 25 m for white targets (80 % reflectivity); only 10 m for black targets (4 %).<br />
* Accuracy: ±15 mm average error from 0.03–2 m; ±20 mm from 2–8 m; ±30 mm beyond 8 m.<br />
* Sampling rate: 21,600 Hz; scan frequency 6–13 Hz (default 10 Hz).<br />
* Supply voltage: 4.5–5.5 V; operating current ≤290 mA.<br />
* Ambient light resistance: tested under 60 Lux sunlight conditions.<br />
* Laser safety: FDA Class 1.<br />
* Lifetime: up to 10,000 hours.<br />
* Connector: ZH1.5T-4P with TX, PWM, GND, and P5V pins.<br />
* UART parameters: 921600 baud, 8 data bits, 1 stop bit, no parity, no flow control.<br />
* Coordinate system: left-hand rule, X-axis points forward, angles increase clockwise.<br />
* Mechanical dimensions: 54.00 × 46.29 × 34.80 mm (L × W × H).<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
Senden Sie "0" über die serielle Schnittstelle, um die Rotation des Lidars anzuhalten.<br />
Senden Sie "1", um die Rotation wieder zu starten.<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* Compatibility with other adapter boards depends on correct pinout; verify pin definitions before wiring.<br />
* The optical window must remain unobstructed; occlusion degrades ranging performance.<br />
* ESP8266 demo flashing steps are version-sensitive; Arduino IDE version and board manager settings may differ.<br />
* Exact COM port assignment varies by system; confirm in Device Manager that the CP2102 driver was detected.<br />
* Additional USB-to-serial modules (e.g., CP2102) must be correctly connected to RX/TX/3V3/GND before sending commands.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/DTOF_LIDAR_STL27L DTOF LIDAR STL27L - Waveshare Wiki]<br />
* Source revision: 73473<br />
* Captured: 2026-09-05T02:55:15+00:00<br />
* SHA-256: <code>8f9f2f086dba4c1111b4c90b0e4f08d80c1d4890870437b63a5007731eac7ce1</code></div>JWTechPublisher