Sorry for the long inactivity but between university studies and the situation of the last months the development of this project has slowed down.
The last (hopefully) revision is now in the production phase and I am waiting to receive it for testing.
The board has been completely redesigned, all the components are now on one side only to facilitate assembly, it should be easier for those who want to try to make one, and a PIR sensor has been added as proposed by some of you.
Unfortunately the CO2 sensor has been removed as it is too expensive (more than the cost of the whole board and components) and for other small problems. I tested some other integrated sensors like BME680, CCS811 and SGP30 but with not enough satisfactory results. I decided to remove this sensor for now but I am willing to integrate it again in case I find a valid option in the future. The IR sensors and transmitters were also removed as the range of the chosen transmitters was not sufficient and required the board to be aligned and positioned very close to the receiver.
Regarding the request to produce and sell these boards, I’m still considering how to do it since unfortunately I don’t have the time to assemble and test the boards by hand. I have just ordered a small batch of already assembled boards to test the service. If everything works as planned I should be able to make larger orders in the future and sell them through Tindie. I will keep you updated on this.
Here’ s a little spoiler of the new board
Once received and tested the first prototypes I will share the project and more information with you.