Weather Board 2 and ODROID-N2 (noob questions)

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Moan
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Weather Board 2 and ODROID-N2 (noob questions)

Unread post by Moan » Fri May 31, 2019 5:39 am

Hi.
I was going to order ODROID-N2 for NAS purposes (external USB 3.0 hard drives).
Under "COMPATIBLE PRODUCTS" I noticed that there is "Weather Board 2" and I got interested in it.

I'm not good at "hardware stuff", so please forgive me noob questions.
First of all, can I connect it to Odroid N2? I suppose yes, since there are C1/C1+/C2/XU4 tutorials on wiki.
Second question: Do Weather Board 2 contain those cables to connect pins (black, yellow, red, orange) or I have to additionally buy it?
And the third question: Is the installation procedure complicated, or a newbie like me shouldn't have problems doing it for the first time?

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by odroid » Fri May 31, 2019 10:15 am

The instruction must be very similar to C2.
Anyway, we will make a new WiKi page for N2 + Weather board installation instruction.

There is no cable. You have to buy male-to-female dupont jumper wires something like this.
https://www.hardkernel.com/shop/jumper- ... male-male/

Just follow the instruction and we will help you here if you meet a problem.

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by odroid » Fri May 31, 2019 3:16 pm

We've made a new WiKi page. More detail wires connection diagram will be added early next week.
https://wiki.odroid.com/odroid-n2/appli ... ther_board

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by Moan » Sat Jun 01, 2019 2:13 am

Thank you! The new wiki article is very useful.

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by lsc1117 » Mon Jun 03, 2019 4:15 pm

@Moan,

We have updated the wiki about wiring with some pictures.

https://wiki.odroid.com/odroid-n2/appli ... ard#wiring

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by Moan » Tue Jun 11, 2019 7:42 am

@lsc1117 @odroid

Thanks for the updated wiki article.
I received my N2 with Weather Board 2 today and thanks to your guide I connected it successfully at the first attempt!

I got a question regarding Jumper Wires: https://www.hardkernel.com/shop/jumper- ... male-male/
They seem to not fit my "ODROID-N2 Case Clear". Is there any solution to mount them (like should I remove this black plastic at the top of the wire), or I am simply supposed to drill some holes in the Case plastic?

EDIT:
One more question. I'm getting the following output:

Code: Select all

======== si1132 ========
Visible : 257 Lux
IR : 18 Lux
======== bme280 ========
temperature : 28.56 'C
humidity : 53.33 %
pressure : 978.40 hPa
altitude : 384.63 m
According to Google Maps my location is at: 296.00 m / 971.13 feet. How accurate is this measure in the Weather Board?
Also, it's currently 22C outside. My room is a bit warm, but 28C looks quite a lot (I'll need to check with a normal thermometer if I find any) . According to "accuweather.com", the current pressure is: 1,011 mb / Humidity 76%.
It's 1 a.m., I turned off all the lights, but visibility is "257 Lux". Is this correct?

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by odroid » Tue Jun 11, 2019 9:16 am

You have to cut or drill some portion of the plastic case to mount it.

Please note that if you place the Weather-board near the N2 board, the temperature & humidity might be affected a lot.
To check the accuracy of the BME280 sensor, check their datasheet. https://ae-bst.resource.bosch.com/media ... -DS002.pdf

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by Moan » Sat Jun 15, 2019 5:58 am

Thank you, I used a few more jumper wires (connected together), placed it a little bit further and the temperature seems to be 1 degree lower.
Do you know long long the jumper wire could be to not damage / cause wrong results from the Weather Board?

By the way, here's how to log temperature, pressure and humidity on Odroid N2 with Home Assistant:
Based on: https://www.home-assistant.io/components/bme280/
1. Add the user which runs Home Assistant to l2c group (so it can use the sensor):

Code: Select all

sudo addgroup [i]moan[/i] i2c
reboot
2. Edit file: /home/moan/.homeassistant/configuration.yaml, add:

Code: Select all

sensor:
  - platform: bme280
    name: Weather Board 2 BME280
    i2c_bus: 2
    i2c_address: 0x76
    scan_interval: 30
#  - platform: Si1132
#    name: Weather Board 2 Si1132
#    i2c_bus: 2
#    i2c_address: 0x60
#    scan_interval: 30
(The Si1132 is currently unsupported).

4. Restart Home Assistant

5. We can configure http://ip.address.of.odroid:8123/lovelace/default_view
To display current sensors data:
homeassist_weatherboard2_overwiew.PNG
homeassist_weatherboard2_overwiew.PNG (29.4 KiB) Viewed 215 times

6. After visiting http://ip.address.of.odroid:8123/history
We can check the History:
homeassist_weatherboard2.PNG
homeassist_weatherboard2.PNG (75.14 KiB) Viewed 215 times
I hope someone will find it useful.

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Re: Weather Board 2 and ODROID-N2 (noob questions)

Unread post by odroid » Mon Jun 17, 2019 12:31 pm

Thank you for sharing a useful instruction guide.

I think the I2C communication must be fine with one meter if we lower the clock speed from 400Khz to 100Khz.

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