fun with the nrf24l01+

What I am trying to do nowadays is to get the "open sesame" system to work wireless.

The servo that opens the door is currently connected directly to the Raspberry Pi, which limits the use of the Raspberry Pi for just this purpose, and I was starting to want to have it around for more things.

The NRF24l01+ is a neat, cheap little device I found in the internet that gives devices a means to communicate with each other wireless through a 2.4 GHz network.

I've been looking at this site for a good sample to follow and build upon.

Currently, I have not been able to build the Raspberry Pi source given from that site on my own, but someone in the comments managed to upload a working, built binary for it, which I have been using so far for testing. I'll eventually have to be able to build it on my own, as I'll probably have to change the code for my purposes.

I've been playing around with it, and I've been able to make lights blink. However, everything seems to malfunction when I try to wire the servo. I haven't actually wired the servo used for the testing on its own, so I have to first rule out that it's a servo/power issue that's causing it.

For now, blinking lights:

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quick recollection on setting things up

If I can swear that the password is correct, then it's possible that I'm getting the ID wrong. Hadn't logged into the web server in a couple of months and was unable to SSH into it. After an hour or so, I ended up deleting the instance and recreating a clean instance (read: erasing everything). I then realized I'd been putting the wrong ID. apt-get install sudo apt-get install Anyways, some links I visited when setting things up (pretty much a dump of whatever I copy-pasted to notes) : Raspberry Pi http://www.makeuseof.com/tag/optimize-the-power-of-your-raspberry-pi-with-raspbian/ Logging http://docs.python.org/2/howto/logging-cookbook.html Tornado - Python webserver that supports Websocket http://stackoverflow.com/questions/2924991/what-popular-webservers-have-support-for-html5-websocket http://lowpowerlab.com/blog/2013/01/17/raspberrypi-websockets-with-python-tornado/ http://stackoverflow.com/questions/11695375/tornado-identify-tra...

warming up

I still don't have all the parts I need to do what I need to do, but I started working with what I had around. I had a 4-digit 7-segment led which I had ordered previously, but for the longest time I had thought I needed additional parts to make it work. It was only today that I realized that that was not the case. Getting some help from this site , I was able to get the digits fired up: This method uses way more wires than this guy (which uses a serial communications protocol called I^2C), but it's good to see it work. I still do want to try the less-wire led setup, as I would like to try playing around with I^2C. In addition, I had recently purchased an Arduino Pro Mini , which contains all the capabilities of the above Arduino Uno but requires pins/connections to be soldered into the board. I had attempted to solder one part of it (the serial/USB connections) a few days ago (note that this was my first attempt ever at soldering), and the USB-to-Serial interface...

chunk update: most parts printed and assembled

currently: stuff that happened are: wired the fingers added screws to necessary assemblies witnessed first failed print during this: servos haven't come yet, but once they do, we can start installing them into the hand/forearm. as always, credit to the Inmoov project.

the quest for robots

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