We were happy to continue testing the LD2412 for 2 more days and it performed well, with a larger angle (75 degrees) and up to 9m, giving it a greater range and generally, we found the static sensitivity to have increased quite a bit. The shortest distance is currently at 0.75m.
The bug with the hardware is that sometimes powering up at the same time can cause the module not to start, the HLK developers have pinpointed an issue and given a temporary solution (shorting three solder joints), after using the temporary solution the start up is very smooth and the 3.3V power supply is very easy to use.
From HLK we learnt about the OTA plan for the LD2412:
Follow-up ota, the expected development plan: next week to increase the photosensitive; before the middle of June on the shelves of the small resolution mode
In terms of price/performance, this radar is a really nice LD2410 upgrade, and given that the biggest hardware issue can be temporarily patched (future bulk versions of the hardware look like they'll fix this for good), there seems to be hope that we can share some of the earliest hardware sensors for the L12 with everyone, and that could be a lot of fun.
We're very happy with the stability of the hardware so far!
For the LD2412 and LD2410 we can now learn this information:
- The angle is larger, expanding to 70 degrees.
- Enhanced antenna with higher sensitivity and better static capability.
- The longest range is extended to 9m, while the LD2410 is about 6m.
- Support 3.3V direct power supply, also support 5V power supply.
- The same photoresistor is provided, but the current firmware does not turn on the function.
- In the firmware protocol provides a detection of background noise function, about 10 seconds will be fixed sources of interference to automatically set the sensitivity of the exclusion.
- Currently is the same price as the LD2410, LD2410 slightly reduced price, but the price of the two is almost the same.