Skip to main content

more for self notes than anything

I moved into a new apartment on August, and so far, it's been great.

One of the things that I noticed when I got the keys to the apartment was that the front-door key was labeled "do not duplicate."


I normally copied a set of keys just in case I lose them, so I checked the internet to see if the "do not duplicate" denoted a physical difficulty or a moral request. The results pointed towards the former. Search results pointed out that these keys required a special "owner card," and locksmiths needed a special copying device for these specific locks. Inconvenient.

Meanwhile, I was humoring the thought of getting my hands on a Raspberry Pi, but I couldn't really think of a reason to justify the purchase.

Well, the two thoughts crossed ways, and the conclusion of "I should program something to open my front door" was made.

How?

There's an intercom system in the apartment, and I supposed that having something press the door open button would be something.

And the click on the check out button was made.

That was about 2 weeks ago.The Raspberry Pi is now here, and I have already started messing around with it. 

After working on it a bit, doing research on implementation and "learning" Python whenever it is needed, I thought that recording my progress would be a good and organized way to look back on it.

This is that record, and I'll try to write as much information as I can.

Couple of posts would be a recap of my progress to date, and future posts will be more of an update.

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

json messaging (2/2)

Took a good 2 hours to change all the messages into JSON format and make it work. But it is done. All is JSON. Using it like a map, currently with three key-value pairs: "id" : for entering a session ID of another session if needed. Currently used for the web client to receive a acknowledge response to confirm that the target received the message (mainly for testing purposes). "type" : probably the most functional data going through all this. Current types are STARTUP_TYPE - for when the target sends its initial message, the server uses this to mark which session is the target. REQUEST_TYPE - for when the web client sends a request to the target. Server uses this to send request to target. ACK_TYPE - for when the target finishes carrying out the requests and sends an acknowledgement of the completion of the request to the server. Server uses this to send confirmation to the web client  MISC_MSG_TYPE - for anything else. DEBUG_TYPE - current...
Post a Comment
Read more

come back

The last couple of weeks have been quite refreshing. The drive for learning and trying out new things has never been higher. Currently fascinated with Node.js; Javascript truly isn't the make-a-website-pretty script I had known anymore.  Playing around with back-end and front-end frameworks. Currently playing around with Sails.js, and once I get used to that, I am looking forward to trying out Angular.JS as a front-end framework. Other than that, currently have couple of other random APIs (non-Node.js) I would like to play around with, but I'm just keeping them up in my browser tabs to that I'll get to them eventually. In addition, I reviewed the Android Developer tutorial again--hoping to try making something in that end as well.
Post a Comment
Read more

adding a servo

Since I don't have any lock that works based on a digital signal, it seemed appropriate to at least have something in place that would emulate the behavior of such a lock, and I thought that a servo would be a good substitute. (note: a servo is a device with which one can control a specific rotational position) Connecting a servo to the current circuit isn't too much of a challenge, as it just requires a single output connection along with the ground/power. Making the servo also just requires an addition of a few lines of code, using the Servo library . A simple video of the servo in action: Now, at least with a locking behavior in place, the one visible functionality that needs to be addressed is the device's ability to distinguish between a "standby" state (no alcohol/no breathing in: should be in "lock" mode) and a "open" state (no alcohol/breathing in: should be in "open" mode).
Post a Comment
Read more