2 Me DHT11 sensors into a single port on mBot


#1

Hi everyone.
I have an idea for a personal project with many sensors and only 4 doors.
I know the Me DHT11 sensor uses 3 pins, two for power and only 1 pin for data. The RJ25 port, on the other hand, has instead 2 data pins (and 1 i2c channel) available.
I thought that it would be possible - through a Me RJ25 Adapter and some soldering/crimping between 2 cables - to connect 2 Me DHT11 sensors in the same port (and advantageously free one port) by connecting respectively the 2 pairs of VCC and GND pins of the sensors to the power supply of the door, and using the 2 data pins of the sensors with the two data pins available in the port.
The logic seems fitting to me but I ask for confirmation from the more experienced participants (especially the Makeblock technical staff).
Then I will have to understand how to recover the data of the second sensor within mBlock (from Arduino I think it is easier).


#2

Hi aeropoli,

I am not an expert user but I had the same thought (There is not enough PORT on the mBot). The Me RJ25 adapter is perfect for doubling the number of sensors without soldering. With a Me RJ25 adapter, you can put 2 sensors such as an LEDS STRIP, an LEDS, a Touch button, a HALL sensor, servo motor, etc. Me, I use the Me RJ25 to put inexpensive Arduino sensors.
2022-01-04%2015_21_25-mBlock%20Block-Based%20IDE-%20Coding%20for%20Beginners

For your need, maybe it’s more with this extension
2022_01_04_15_19_31_mBlock_Block_Based_IDE_Coding_for_Beginners


#3

Hi there:

Thank you for your advice,we’ll take it into consideration.

Best Regard


#4

Thank you for your answer.
Yes, that was the idea. However, there is the problem of solving the extraction of both temperature and humidity values ​​that the 2 sensors provide, and this will complicate my problem.
But isn’t problem solving the beauty of coding?


#5

Thanks for your interest, your support will be essential.