hydroponics | Hydroponics based on Arduino
kandi X-RAY | hydroponics Summary
kandi X-RAY | hydroponics Summary
Hydroponics based on Arduino
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QUESTION
I'm currently developing an application whereby a list of categories will be displayed. Once a category has been selected, the application will go to the next page which will ask a question about water type. Once the water type has been selected, the app should then display a list of products that match the category and water type that has been selected.
I'm new to React and struggling to understand how managing the state works between pages and components/consts. My code is as follows:
categories.js
...ANSWER
Answered 2020-Apr-15 at 09:12I was able to replicate your React application and here's how I solved it. For React Router to work you need your main component wrapped inside BrowserRouter which is what I did in index.js file.
Then, in the App.js file, I created separate routes for navigating between your components. The way you passed props down using Link component was not correct. That is why your states were undefined. Rest of the code, I have made only minor changes which are trivial for you, I hope.
QUESTION
ANSWER
Answered 2018-Feb-12 at 12:01You can try the following:
QUESTION
Forgive me if I ask something foolish, I very new to coding industry
I been working on Django project to create dashboards to show case monitoring of an hydroponics greenhouse.
So I create two model;
...ANSWER
Answered 2019-Feb-19 at 06:57You have 4 arguments in your render of which 2 is context. It needs only one dictionary with context or you can make a context dictionary variable and pass it as argument in render.
Try this:
QUESTION
I have been working on a simple sensor logger for my mini hydroponics setup, using the Google IOT Arm sample code (original code https://github.com/ARM-software/Cloud-IoT-Core-Kit-Examples/blob/master/CPUTemp/pi_cpu_temp_mqtt.py).
It has been working great. Every 60 seconds, the payload delivers sensor data to the Google Cloud, which I track in Data Studio.
I have added Adafruit sensors, and have been happily tracking the sensor data for a few weeks.
The Problem
My router automatically restarts once a day, at 3am, which has caused my Python code to hang. I could simply stop this restart, but instead prefer to catch or avoid the error entirely, in case of more unusual connection issues in future.
The Hope
The ability to reconnect, when able to, and to continue to send data to Google Cloud.
I will be adding control features in future, such as relayed lights and fans, so reliability is crucial to help my plants grow.
The Full Error
...ANSWER
Answered 2018-Dec-04 at 02:18Thank you hardillb for your suggestion, using from socket import gaierror
QUESTION
when you click on the button,the text should fade out and a search result should fade in.but nothing happens.i also tried jquery hide and show and indeed nothing happend.also used jquery css and had no success.
...ANSWER
Answered 2018-Apr-21 at 08:02You have several problems.
The button doesn't have a type
attribute, so it defaults to type="submit"
and submits the form. So you're reloading the page when you click the button.
Change it to type="button"
to prevent this.
These lines won't work:
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