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by wtshing
Tue Apr 10, 2018 1:10 pm
Forum: General discussion
Topic: Is it possible to use cron to handle other cron
Replies: 7
Views: 648

Re: Is it possible to use cron to handle other cron

Sounds all a bit confoozled, and therefore prone to you not knowing why it has gone off and sat in a corner. are you sure that you couldnt write a single cron job that reads the table and acts accordingly (as in do the job you were going to get the second cron to do)? How can I read the data from t...
by wtshing
Mon Apr 09, 2018 8:39 pm
Forum: General discussion
Topic: Is it possible to use cron to handle other cron
Replies: 7
Views: 648

Is it possible to use cron to handle other cron

Hi guys,

I create a table to store cron data in mysql, is it possible to set a cron to check the change of the table?
As I want to use a cron to update another cron file so that it can modify and run the scheduled tasks based on the records inside the table.

Thanks.
by wtshing
Thu Mar 22, 2018 6:57 am
Forum: General discussion
Topic: Run input from U.I. and create cron job
Replies: 3
Views: 580

Re: Run input from U.I. and create cron job

I know cron job can perform the scheduling task features. However, can users modify the cron job file via the user interface (e.g. the website hosted by the ubuntu server 16.04 which is connected to the pi) instead of using putty or other command lines.
by wtshing
Wed Mar 21, 2018 2:58 pm
Forum: General discussion
Topic: Run input from U.I. and create cron job
Replies: 3
Views: 580

Run input from U.I. and create cron job

Hi, I connected the pi (e.g. 192.168.0.1) with my ubuntu server (e.g. 192.168.0.2), and now it's able to use the website hosted by the ubuntu to perform tasks, such as turn on & off led/ read data from sensors. I want to ask, is it possible to read the data inputted by user and modify the cron job, ...
by wtshing
Thu Feb 01, 2018 7:40 am
Forum: General discussion
Topic: Is it possible to use both wifi & bt connection at the same time?
Replies: 7
Views: 951

Re: Is it possible to use both wifi & bt connection at the same time?

wtshing, 1. Will the iot market product become non-functionable if the Internet connection is lost (cannot connect to the their cloud)? What IOT product do you mean? Certainly there are IOT devices that become useless if the manufacturer's servers goes away. It has happened many times already. 2. W...
by wtshing
Thu Feb 01, 2018 7:36 am
Forum: General discussion
Topic: Is it possible to use both wifi & bt connection at the same time?
Replies: 7
Views: 951

Re: Is it possible to use both wifi & bt connection at the same time?

Roken wrote:
Wed Jan 31, 2018 9:29 pm
You could probably script it by checking if wlan0 has an IP address, and switching if it doesn't (or switching back if it does).
Thanks a lot!

Will it be so difficult for the programming?
by wtshing
Wed Jan 31, 2018 4:06 pm
Forum: General discussion
Topic: Is it possible to use both wifi & bt connection at the same time?
Replies: 7
Views: 951

Is it possible to use both wifi & bt connection at the same time?

Hi guys, Currently, I am doing a project and I want to ask some questions. 1. Will the iot market product become non-functionable if the Internet connection is lost (cannot connect to the their cloud)? 2. Will the above problem exist for the Rpi products? 3. If I want to do a project that, if the WI...
by wtshing
Wed Jan 31, 2018 4:03 pm
Forum: Other languages
Topic: Traditional Chinese - 中文
Replies: 20
Views: 20174

Re: Traditional Chinese - 中文

以下用書面語發問,方便香港以外的人看。

想問一下,市面上的iot 產品是不是會在上唔到網的時候失靈,原因是因為連接不到產品的cloud?

如果是的話,市面上的iot 產品可否用自己LAN 的WIFI 輸入指令?

而RPi 的話,會否出現以上問題?

我又可不可以立一個當WIFI 失效而轉行BT (CATCH-UP) 的指令?

謝謝。

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