I want to make a heat sensor on wifi and connect it with my phone.

Question

It's a school project. Can someone help me please? The sensor needs to send a push notification when the temperature is between 50 and 70 degree celsius.

colporteur · Accepted Answer

I worked on a project last year to measure water and air temperature and made the data remotely available from an wireless access point. This was all done on a Raspberry Pi. I am unable to post the document on a public forum but I am willing to share the file if you want to drop me an email.

The document is a step by step guide on building the project. It may have many of the building blocks you require for your project.

Sean

shabaz · Answer

Hi Sean,

This is a school project. Not sure it's good to privately send him an entire step-by-step guide to building the project when he should be making that effort to design it, but it's your choice of course.

colporteur · Answer

You commentary is valid. What are the ethics involved in providing resources when our community is contacted?

My initial response to the request was a series of questions. Nine times out of ten, this is triggered by discovering the newly minted membership date of the individual asking the question. Finding this site because you are looking for a solution is not such a bad thing. Especially if the site provides benefit. What got the reader here may keep them here. I like that thought.

I also like investing in learning. I encourage those that ask for help, by engaging them through questions. No response to the questions is a good indicator of whether I want to make further investment. I find if they respond to the questions, others in our community might engage. It seems the individual asking the questions has reached the threshold of investment to garner a response. My first response is sot of like a question triage, determining does it warrant attention.

The document is a pdf of an article that was published in a computer magazine in April 2019. The document was publicly available on newsstands or can now be obtained through the magazine archives with a subscription. I am able to share the articles but refrain from putting articles provided to publishers in the public domain.

How step by step is the article? The article is written for an intermediate level Pi user. It provides the technical details and python code to construct the project. The assumption is the reader has the knowledge to get a Pi up and running with the Raspbian operating system. The specifics to establish a real time clock, turn a Pi into a wi-fi access point and then physically construct the sensor array are provided. Included is a parts list and schematic of the build.

I recall for my college graduation thesis I used an article from some electronic magazine to build an ultrasonic transducer alarm. The details in the article were like lego building blocks. The picture on the article only suggested what it would look like. Alternate parts had to be sourced and it didn't work as originally designed.

I suspect max050 will find some challenges in building the project. I know Raspbian O/S has undergone an upgrade since the article was published. That in itself may pose a challenge in configuring the wi-fi access point. How to transfer the data from the Pi is suggested but not fully documented. Hopefully after reviewing the material he takes the time to get approval before a build. If he chooses not to, then he will have to argue that there is enough learning in the project it didn't compromise his course requirements.

colporteur · Answer

No problem. I appreciate the reminder. Just because you can do it, doesn't necessarily mean it is a good idea to do it. Sober second thought:)

colporteur · Answer

Welcome Max. I see by your profile you are new to the Element14 community. To arrive at a build for your project, can you provide some additional details.

The title of your posts is a ambiguous and can head in a number of directions. Do you have a drawing that reflects your project? The drawing doesn't have to be a professional schematic. It can be a hand draw facsimile that helps us understand the goal and provide a reference point for questions.

What is the project for?

What is the timeline for your project?

What experience do you have working with Raspberry Pi?

What resources do you have on hand for the project?

Does your project have a budget?

clem57 · Answer

Have you seen this https://training.ti.com/wifithermostat . It looks like something you want to check on. Clem

max050 · Answer

the project is for the graduation of my study.

The project must be finished by the end of January

I have no experience with the Rapberry Pi

I have a Raspberry Pi, a heat sensor and a wifi stick

The budget is not a problem

I am from the Netherlands, my English is not great so I hope you understand me.

aspork42 · Answer

You might check out the GraspIO. They take care of most the heavy lifting and there is a graphical user interface for doing the "coding" via drag & drop blocks. They have a phone app as well. I have had a couple of them through E14 and they are great and setup is super easy.

vimarsh_ · Answer

I think you can use Blynk https://blynk.io/ to connect your any WiFi enabled device to smartphone. You will be able to send commands and also get real-time stats as per need for your project. I have used it many times and it is really easy to get started. Check it out if its appropriate.