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Human Sensor 2A For Home Assistant By SCREEK (HLK-LD2450, ESP32-C3, ESPHome)

Human Sensor 2A For Home Assistant By SCREEK (HLK-LD2450, ESP32-C3, ESPHome)

$26.99 USD
$29.99 USD $26.99 USD
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For EU users, please prioritize purchases from our eBay store: https://www.ebay.com/itm/185996913551

Document, Firmware Update: https://docs.screek.io/2a

Join our community and explore new sensors: Facebook Group, Reddit Group.

After a very long testing period, and also with the feedback and support from the first users, we had the opportunity to refine it to a much better height, and this is the current 2A, where we support 3 zone settings on the firmware, as well as an excluded zone setting. This interesting radar can now be very smart to help you with some of the more complex radar judgment logic, implementing a very basic fp2 like functionality.


We've been refining the 2A's dynamic map code lately, and now that they're working to our satisfaction, it's a great demonstration of the 2A's appeal as a tracking sensor that can even give us a rough idea of what's going on in a given space. Of course, the 2A still has its flaws, with failures for partial pose tracking and poor static capabilities. But in some ways, human presence is an area where it's a great presence!

You can select the type of code you want to generate in the code generator

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Static capabilities inform
After a more careful test(https://www.youtube.com/watch?v=zR-0SFeg2ns), we found that the static capability of the LD2450 was not as bad as we thought, but we did miss one thing: radars claiming static capability (e.g., LD2410, LD1125F) are not that good at static, and they more or less use a trick - timeout shutdown - so that a complete lack of movement for the duration of the timeout is only considered as the target gone. And considering that it's almost impossible for a person to completely stop micromotion at normal times, this time difference, reduces the likelihood of being shut down.
We have incorporated athua's timeout code patch in the new firmware version, making it easier to adjust the 2A's timeout off function, and we recommend that everyone turn this on, and next, we'll try to turn it on as the default value of 30 seconds.

Features

  • Simplicity of housing design: with no PIR to burden us, we didn't have to drill holes in the housing to reveal a big white eye. We also didn't use screws in the design so that the overall integration is very simple and free of excess. Including the light sensor, we also just thinned the corresponding position of the shell without any holes, it is a complete indication. This is the simple way we like it, and like its firmware, everything is simply integrated.
  • Easy integrated: After network connection, it is automatically discovered by HomeAssistant, no need for MQTT or any Addon, and of course, no need to install ESPHome Addon.
  • Target Coordinate detection: Compared to LD2410, now you can support X coordinate reading! And Y coordinates are more accurate! They are accurate up to 36cm.
  • Zone Support: Based on the current firmware, three recognized zones (Zone1, Zone2, Zone3) are supported, as well as one excluded zone (Zout1), which can be switched on and off individually. Enabling the exclusion zone will disregard excluded targets in all recognition judgments.
  • Long distance detection: up to 6m, a remarkable figure.
  • Zero CONFIGURATION For Sensitive: No need for complicated sensitivity settings or operation in APP, the radar integrates some human judgment algorithms, it will recognize human features to determine humans.
  • Light Sensor Include: A professional light sensor BH1750 is integrated in the radar, making it capable of Lux light judgment at 65536 levels.
  • Community Support: Community support is provided(Both FB Group And Reddit Community), along with timely and updated documentation support. We are always exploring more sensor possibilities and attempting to make them work stably and reliably.
  • No dependence on the Internet and privacy: thanks to the full localization of the Home Assistant runs, which adds to the stability and responsiveness of the device, and there is no external network dependency. Even without internet, you can run it in a fully local LAN environment, like an RV system!
  • DIY Firmware support: We don't have experience in building an open source project, but we love and respect the spirit of open source, and the success of the sensor's design is due to the open spirit of projects like ESPHome and Home Assistant. So on top of 2A we always open up so the YAML code we use (usually not so much in real time, but once the test firmware is stabilized), this is because we want people to review our code and at the same time we want to give a basis for those who want to DIY their own features.

Specifications

  • Size: 56.9mm x 56.9mm x 14.3mm
  • Power supply: Type-C power supply, 5V 1A. (Please use a stable power supply, radar is sensitive to power ripple.)
  • Radar working frequency band: 24 GHz ISM band
  • Light sensor: BH1750, accuracy up to 1 Lux.
  • Maximum working distance: 6m
  • Detection angle: Azimuth angle ±60°, pitch angle ±35°
  • Principle of operation: Integrated intelligent millimeter wave radar chip LD2450 and intelligent algorithm firmware
  • HomeAssistant integration method: ESPHome built-in firmware, no ESPHome Addon required.
  • Connection method: Wi-Fi
  • Power consumption: Average 150ma, 5V
  • Installation: Wall mounting, installation height 1.5m ~ 2m

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