Posts made by CoffeeCat

@crispyoz

Thanks for the assistance, it works now!

@crispyoz

Completed the steps you recommend and working through this issue, and keep encountering this message when trying to enter the first line:

Trying to enter the following:

#
* * * * * python3 plantTracker.py
#

I have no clue as to what is causing it.

Thanks again!

@crispyoz

Thanks, I will give that a try soon.

In the meantime, update the ric.local file at

/etc/rc.local

Using this page as a reference:

https://docs.onion.io/omega2-docs/running-a-command-on-boot.html

It runs the program, but think getting the Crontab to work is “best practice” than keeping the Omega2 in an indefinite boot cycle (flashing light).

Following the tutorial for setting up a crontab to run a task:

https://docs.onion.io/omega2-docs/running-a-command-on-a-schedule.html

But each time, receive the following error message after trying to close and save with

:wq

Any suggestions?

Thanks in advance!

Wondering if it’s possible to switch out a TMP36 with a DS18B20 for temperature sensors? Working on the project with the adc expansion:

https://onion.io/2bt-python-iot-sensors/

So, thinking about switching out the TMP36 with the
DS18B20 because it’s available with longer wires and water proof connections to its pins.

Using this other project for reference on the DS18B20 for code and necessary update to schematics, such as adding a resistor to it.

https://docs.onion.io/omega2-starter-kit/starter-kit-temp-sensor.html

Thanks in advance!

Figured out the jumpers and addresses in the code for the moisture sensor and temperature sensor were mismatched in the illustration from the tutorial.

Updated the code, temporarily, to verify the connections and components were working:

https://onion.io/wp-content/uploads/2018/07/fritzing-model-1024x738.jpg

Sensors are providing readings now in line with other independent sensors.

Tried a new TMP36 and checked the connections, but no readings yet.

Switch to a new breadboard to hold the sensors and new wires, also tried two TMP36’s and receive the same reading. Not sure if both are bad from mis-wiring. The other sensors’ readings look normal.

Might order another TMP36 to see if that changes anything.

@György-Farkas

Thanks for the information!

Also found these two sites about the TMP36

https://learn.adafruit.com/tmp36-temperature-sensor/overview

http://cdn.sparkfun.com/datasheets/Sensors/Temp/TMP35_36_37.pdf

I’ll check out the jumpers and make sure they are connected to the correct sockets and making contact.

Working on the project for the IoT Sensors:

https://onion.io/2bt-python-iot-sensors/

Added the packages and code to run the sensors.

The first time powered up and ran the program, the jumper connectors were heating up. Worked out the pin connections for it and restarted it all, but receiving the following temperature readings:

What might cause the inaccurate readings?

@crispyoz

Thanks! Used the distfeeds.conf file from the Onion.io site

https://docs.onion.io/omega2-docs/using-opkg.html

Replaced the content, ran opkg update, and opkg install python3-adc-exp.

Success, no error messages!

Thanks for trying it out on your end!

@crispyoz

Thanks, I ran the opkg update, but wonder if the distfeeds.con file has an incorrect url in it or some other typo on the device when it was updated by removing the #’s.

I’ll try looking up some examples and post back if there are any it.

Also, what version of python does your device have? My device has version 3.

The adc-exp utility file is located on Github.

adc-exp/Makefile

Update the distfeeds.conf, re-run opkg update and rebooted the Omega2, but it still does not work?

Is it possible to manually install in using the code/file from GitHub

Runninf opkg list | grep -i adc-exp does not return anything.

Is the adc-exp package still available?

@crispyoz

Thanks update the following:

Error Message:

Not sure if I missed the wrong lines. Any ideas?

Thanks again!

Trying to install the package for ADC expansion and receiving the following message:

What could cause it?

Just found this on the Onion.io site:

https://onion.io/2bt-python-iot-sensors/

Has anyone tried it out? Think it will provide an answer to my initial question on using moisture sensors with the Omega2.

Are there any moisture sensors that are compatible with the Omega2 using the Power Dock2 instead of the Arduino Dock?

Have not found any yet, thanks in advance!

Cool project!

@György-Farkas

Thanks for the advice! Bought a cable with the Silicon Labs chips. Plan to use it for accessing the Omega2+ in addition to WiFi access.