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  • Author Author: engswee
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Dust, Temperature and Humidity Monitor Chapter 2

engswee

R & D:

Sensor, sensor, sensor and more sensor.

Other already start with some sensor and testing but I still in progress looking for sensor . Maybe I should stop looking at other and just doing my own one he..he..

Looking for good and affordable sensor is not that easy and fun. First issue price, 2nd quality, 3rd interface and lease not last program. This all haven't included the accuracy, stability, lifespan and other.

 

After few research, I have choose this Sharp GP2Y1010AU0F dust sensor and SHT75. Below is more information about this two sensor.

SHARPGP2Y1010AU0F

 

Look like this is the only dust sensor available in element 14 up to my knowledge. Please let me know if someone have any information for dust sensor from element 14.

 

Now preparing of testing for this sensor. I’m currently using old sensor for testing.

 

The output for this sensor is analog voltage (please refer datasheet for more information http://www.farnell.com/datasheets/73805.pdf).
It should not have any issue for use with BBB or CC3200 unless the build in ADC is not enough resolution for the requirement.

 

Dust sensor:

GP2Y1010AU0F - SHARP - DUST SENSOR | element14 Singapore

Sensors | Sharp Devices Europe

https://www.semiconportal.com/en/archive/new-product/device/140117-sharp-pm25.html

 

SENSIRIONSHT75This sensor look good enough for the requirement needed. SHT75 have an accuracy of 1.8% and SHT71 have an accuracy of 3%.

They both using I²C digital output and able to operate at 3.3V or 5.0V.

Another good news is they come with pin package. Wo..ho.. don't need to make PCB for connection.

 

Planning to get the evaluation kit to help in the testing and more understand about the sensor.

This also will help in development of this sensor in the circuit.

 

 

Humidity and temperature sensor(combine):

EK-H5 - SENSIRION - EVALUATION KIT, HUMIDITY, FOR | element14 Singapore

SHT75 - SENSIRION - SENSOR, HUMIDITY & TEMP, 3.3V | element14 Singapore

 

For individual temperature and humidity sensor I will look into them if there any issue with the plan sensor.

 

Other:

Connector

  • USB
  • DC jack

Fan

LCD

Memory cards

ADC

PowerBank

Switch


Plan1:

Using BBB + dust sensor + humidity & temperature sensor + 7" or 4.3" display for BBB + power bank (4cell 18650 battery) + WIFI dongle


Plan 2:

Using cc3200 + dust sensor + humidity & temperature sensor + 430BOOST-SHARP96 + power bank (4cell 18650 battery)

 

Sharing:


image

Experience with some error with blog save draft. I suggest you have another backup although here already have build in back up.

I just lost some of my information here with some unknown error.

 

 

 

 

 

 

 

 

 

 

 

 

image


Edit and delete is close to each other be careful when aim your target.

So far no issue with this, using a 5200dpi mouse he..he..







One more thing, when the blog is post there is no option for you to bring them back to draft.

But don't worry, you able to edit them from time to time image

 

 

Previous

Dust, Temperature and Humidity Monitor Chapter 1

 

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Dust, Temperature and Humidity Monitor Chapter 3