A compact case for LD2140B, LD2410C or LD1115H human presence detection sensor with BH1750 light sensor and GY-BME280 Temperature/humidity/Air pressure sensor

A wemos D1 mini or S2 mini will be needed as the main board.

Features:

• Adjustable side to side human presence sensor
• Tiltable mount (M4 size), M3 bolt and nut for the joint
• Extremely compact ( just don't look inside after closing the case)
• Friction fit

Notes:

• Careful when putting in the S2 mini, the boot button is quite easy to accidentally bump off
• I use the vbus pin as the 5V power for the mmWave sensor or alternatively you can solder a thin enamel copper wire on the resistor left side
• Multi connections like i2c bus, 3.3V and ground can be connect together with a thin wire and then use the exist header pin to wire it, just make sure to insulate the solder.
• I used 10cm female jumper wires cut in half, the wireside are solder to the sensors and the connector to the board, this exclude the 5V connector, since the vbuse is at the far end.
• An offset will need to put in for the temperature and humidity since the sensor is inside with the ESP for aesthetic reason (-7 to -13 for temperature and 32 to 40 for humidity)
• I found LD1115H to be more reliable, currently ESPHome doesn't have support for it, but other has done a great job making it work.
• Hot glue the light and temperature sensor and the pin header so it will not come off

20250608 update:

• Added a case for LD2450 sensor
• Added v2 version of the lid and hinge, the lid have groove for the underside of header pin and a prop to hold the sensors up, move the hole for the light sensor for better fitting. The hinge now have a hole to add filament to stop it moving once inserted.

20250806 update:

• Added a version of board case with ventilation