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:

Comments

playing with servos

some servos that I had ordered were delivered. the instructions suggested another brand/model of servos, but these were a much more economical (cheap). I tried adding them to the hand: I'll have to print the "pulley" pieces that will be attached to the servos. meanwhile, I did somewhat (hackily) got the wrist to work, for now: you keep hearing the "usb plugged out" sound in the background, and that's because the servo was being powered by the arduino. the servo's power draw appears to be causing a shutdown of the device. will need a better power source for the servos. it feels like these pieces that are supposed to be plugged into the servo will have size issues.

dabbling with android

I've been wanting to dabble with Android development recently, and yesterday I realized that there is a Socket.IO client API available for Java/Android. The API is pretty straightforward, so I loaded a test Android project I had made for going through Android basics and connected to the OpenSesame Node server. and it works! I mean, the interface is non-existent and it's really just bare-bones, but having the servo respond through an Android application was pretty refreshing. (the web client and the android client "communicating" with each other--messaging is pretty much for debugging purposes)

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

Search This Blog