LHT65 is a close source project.

The LHT65 project is originate from LSN50, they use the same CPU and the hardware design is similiar. The LHT65 use the SHT20 and DS18B20 sensor. These sensors are already support in LSN50 and the source code is open. Please see:

  1. LSN50 Software Source Code
  2. LSN50 hardware source code
  3. LSN50 user manual with how to compile firmware
  4. The LHT65 hardware can be provided base on NDA.

With above info, developer will be able to develop a customied version of LHT65.