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Grove - Doppler Radar (BGT24LTR11) (24GHz Transceiver)
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The Doppler Radar is a compact and low-power all-in-one sensor (Distance, Motion, Velocity and Angle Detection) based on the BGT24LTR11 Silicon Germanium MMIC, a 24GHz radar transceiver, and driven by the XMC1302 MCU with an Arm® Cortex®-M0 core. It is compatible with Arduino (With a Grove - Base Shield) and Raspberry Pi (Only with the Grove-Base HAT)
Its high frequency allows it to penetrate through objects, meaning it can be installed behind surfaces without needing direct exposure, making it especially useful in security systems. Additionally, it performs well in harsh weather conditions, such as high temperatures, dust, and rain, providing reliable operation in challenging environments.
Features
- The first radar-based sensor in the Grove Family
- Compact size for easy deployment
- Light-weight design, suitable for UAV applications
- Low power consumption for prolonged usage
- 24GHz Transceiver MMIC for high-precision measurements
- Fast response using electromagnetic waves
- ESD protection to avoid system failures caused by ESD strikes
- High penetration which allows it to be deployed behind an object
- Maintains operation through harsh weather conditions (temperature, light, dust, rain)
- Product Number: Seeed 109020021
Specifications
| MMIC | BGT24LTR11 |
| MCU | XMC1302 Arm® Cortex®-M0 |
| Transmission Frequency | Min: 24GHz |
| Typical | 21.125GHz |
| Max | 24.25GHz |
| Output Power (EIRP) | 7dBm @ 25°C |
| Update Time | 300ms |
| Communication Interface | UART (115200) |
| Detection Distance | 10m @ 0dBsm |
| Standard Detection Field | 65° / horizontal (-6dB); 22° / vertical (-6dB) |
| Supply Voltage | 3.3-5V |
| Weight | 5g |
Resources
Pinout
Package Contents
- 1 x Grove - Doppler Radar
- 1 x Grove Cable
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Product Reviews
Grove - Doppler Radar (BGT24LTR11) (24GHz Transceiver)
Good product which can provide not only speed information but whether the object is moving away or towards you. The only downside is that it detects speed in the orders of 52 cm/s e.g. you read that the object is coming at you with a speed of 52 or 104 or 156 cm/s. While for some applications this may be enough, it does not help my purpose as I was looking for a sensor which can continously sense and follow an object accurately. I made the item communicate with a ESP32 based controller through UART. For this I written a script in micropython following the communication protocol provided on the product WIKI and it worked ok
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2 months ago
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