# Slamtec RPLIDAR A1M8 360° Lidar (dev kit)

> Slamtec RPLIDAR A1M8: 360° 2D laser-triangulation scanner, 0.15–12 m on white targets, ≥ 8000 samples/s, 5.5 Hz typical (1–10 Hz by motor PWM), ≤ 1° angular resolution, < 1 % distance resolution, 785 nm Class 1, 3.3 V UART 115200 baud, separate 5 V core and 5–9 V motor supplies, 170 g, 96.7 × 70.3 × 51 mm. DFRobot sells the development kit with a USB adapter.

- Manufacturer: Slamtec
- Part number: A1M8
- Category: Lidar & ToF range sensors
- Canonical page: https://www.xirkit.io/products/slamtec-rplidar-a1m8-360-lidar-dev-kit-0e28
- Pinout: https://www.xirkit.io/products/slamtec-rplidar-a1m8-360-lidar-dev-kit-0e28/pinout
- Structured JSON: https://www.xirkit.io/products/slamtec-rplidar-a1m8-360-lidar-dev-kit-0e28/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Lidar type | 2D scanning |
| Ranging method | triangulation |
| Min range | 0.15 m |
| Max range | 12 m |
| Accuracy detail | < 0.5 mm resolution under 1.5 m; < 1 % of the distance over the full range (resolution, not accuracy) |
| Scan frequency | 5.5 Hz |
| Sample rate | 8,000 Hz |
| Angular resolution | 1 ° |
| Horizontal field of view | 360 ° |
| Wavelength | 785 nm |
| Laser safety class | Class 1 (21 CFR 1040.10 / 1040.11) |
| Interface | UART |
| ROS 2 driver | Yes |
| ROS drivers | rplidar_ros (ros2 branch), rplidar_ros (ROS 1) |
| Weight | 170 g |
| Supply voltage | 4.9–5.5 V |
| Dimensions | 96.74 × 70.28 × 51 mm |
| Operating temperature | 0 to 40 °C |

## Pinout (7 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 5V_MOTO | PH1.25-3P (motor) | power in | — | power_in | — | — | — | — | — | — | — |
| CTRL_MOTO | PH1.25-3P (motor) | motor ctrl | — | ctrl_moto | — | — | — | — | — | — | — |
| GND_MOTO | PH1.25-3P (motor) | ground | — | ground | — | — | — | — | — | — | — |
| VCC_5 | PH1.25-4P (core) | power in | — | power_in | — | — | — | — | — | — | — |
| TX | PH1.25-4P (core) | uart tx | — | tx | — | — | — | — | — | — | — |
| RX | PH1.25-4P (core) | uart rx | — | rx | — | — | — | — | — | — | — |
| GND | PH1.25-4P (core) | ground | — | ground | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.dfrobot.com | 99 USD | in_stock | 2026-10-17 | https://www.dfrobot.com/product-1125.html |

## FAQ

**What voltage powers the Slamtec RPLIDAR A1M8 360° Lidar?**

Supply range 4.9–5.5 V.

**How much does the Slamtec RPLIDAR A1M8 360° Lidar cost?**

From $99 at www.dfrobot.com. Prices are observed unit prices before tax and shipping.

**What are the Slamtec RPLIDAR A1M8 360° Lidar dimensions?**

96.74 × 70.28 × 51 mm. A STEP model is available for enclosure fit checks.

**Where does this Slamtec RPLIDAR A1M8 360° Lidar data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [Slamtec RPLIDAR A1M8 360° Lidar (dev kit) datasheet](https://raw.githubusercontent.com/May-DFRobot/DFRobot/master/LD108_SLAMTEC_rplidar_datasheet_A1M8_v3.0_en.pdf)
- [www.dfrobot.com listing](https://www.dfrobot.com/product-1125.html)

## Part graph

### Alternatives (by use case)

- [LDROBOT STL-19P 360° dToF Lidar (Waveshare D500 kit)](https://www.xirkit.io/products/ldrobot-stl-19p-360-dtof-lidar-waveshare-d500-kit-d990) — Both serve slam mapping and navigation — check the trade-offs; $95.99 vs $99
- [YDLIDAR X2L 360° Triangulation Lidar](https://www.xirkit.io/products/ydlidar-x2l-360-triangulation-lidar-c1e8) — Both serve slam mapping and navigation — check the trade-offs; $65 vs $99
- [LDROBOT STL-27L 25 m dToF Lidar](https://www.xirkit.io/products/ldrobot-stl-27l-25-m-dtof-lidar-6764) — Both serve slam mapping and navigation — check the trade-offs; $160 vs $99
- [YDLIDAR X4 Pro 360° Triangulation Lidar](https://www.xirkit.io/products/ydlidar-x4-pro-360-triangulation-lidar-b1db) — Both serve slam mapping and navigation — check the trade-offs; $90 vs $99
- [LDROBOT LD14P Lidar (Waveshare D200 kit)](https://www.xirkit.io/products/ldrobot-ld14p-lidar-waveshare-d200-kit-152c) — Both serve slam mapping and navigation — check the trade-offs; $99 vs $54.99
- [YDLIDAR T-mini Plus 360° ToF Lidar](https://www.xirkit.io/products/ydlidar-t-mini-plus-360-tof-lidar-c0fd) — Both serve slam mapping and navigation — check the trade-offs; $99 vs $85
- [Orbbec MS200K 360° dToF Lidar](https://www.xirkit.io/products/orbbec-ms200k-360-dtof-lidar-86b6) — Both serve slam mapping and navigation — check the trade-offs; $100 vs $99

### Newer generation

- [Slamtec RPLIDAR C1 360° dToF Lidar](https://www.xirkit.io/products/slamtec-rplidar-c1-360-dtof-lidar-5db8) — Slamtec's next-generation low-cost 360° lidar; the C1 datasheet says it is compatible with the A-series standard sampling protocol and can directly replace previous RPLIDAR models in the original system

### Variants

- [Slamtec RPLIDAR A3M1 25 m 360° Lidar](https://www.xirkit.io/products/slamtec-rplidar-a3m1-25-m-360-lidar-103d) — Same Slamtec RPLIDAR A-series 360° triangulation scanner and rplidar_ros driver; A3M1 is the long-range (25 m, 16 kHz, OPTMAG, outdoor mode) model, A1M8 the 12 m / 8 kHz entry model

### Pin-compatible

- [Slamtec RPLIDAR S2 360° dToF Lidar](https://www.xirkit.io/products/slamtec-rplidar-s2-360-dtof-lidar-653b) — Datasheet: S2 runs all earlier RPLIDAR protocols and can be used directly in place of previous models (range-limited compatibility mode); same XH2.54-5P VCC/TX/RX/GND interface