91–100 of 160 posts
Some pictures: https://github.com/Hylian/PiHUD
Just yesterday I used an old raspberry pi to make a bluetooth audio receiver that could be integrated with my vintage stereo equipment. You can buy something off the shelf for around $25 but they use cheap digital-to-analog converters and I wanted to use the high quality USB DAC I already had. Total hardware needed was the Pi, powered USB hub, USB DAC, and USB bluetooth adapter. Potato quality photo of the very advan…
I built a tube internet radio with speech output of station names and switching stations with the AM dial. A small USB mouse picks up the rotation, a python script speaks the station name and passes the stream URL to gmediarenderer. Sound via USB soundcard and Phono/Aux input. Inspired by http://blog.scphillips.com/posts/2014/05/playing-music-on-a-... . Some pictures at http://imgur.com/a/r834D
Any info re: interfacing with the dial? I bought a radio for a similar purpose that's just been gathering dust in the garage.
Measure, how many delta ticks a revolution gives you and adjust the delta to trigger the next station to feel natural when turning the dial. I bent a simple bracket from some scrap sheet metal to hold the mouse in place just above the dial. The black and white threads of the cord wrapped around the dial helps the optical sensor, so try to position the optics above that.
Similar project: https://2dom.github.io/the-radio/ I did not bother to remove parts of the mechanics to make the dial endless, however. Dialling through so many stations that you need that is tedious anyways, so I felt I don't need it.
Oh and by the way, I made the Raspi's filesystem read-only so I could shwitch it of safely with the radio. See i.e. https://hallard.me/raspberry-pi-read-only/
The Website: http://solarpi.tafkas.net
Github Repository: https://github.com/Tafkas/solarpi
Blog Post: http://blog.tafkas.net/2014/07/03/a-raspberry-pi-photovoltai...
Feedback is very welcome.
Is anyone using this to sense water levels (or just the presence of water)? I'd like to implement a doohickey that monitors water levels in a water storage tank which is not easily accessible. So it must be very reliable, and install-and-forget, as access is a pain in the ass.
I am going to try that this next week. I live in a third world country, and here most days there's no water coming from the pipes. So I am going to try and monitor the water levels in my house. What I bought to do that: A ESP8266 board (it's like an WiFi arduino), and an ultrasound distance sensor. My plan is to point the sensor vertically towards the water. It emits sound and then measures the time it takes for that…
We've built a whole business on top of the Raspberry Pi. The company/project is called Screenly[1], which is a digital signage solution for the Raspberry Pi and we have over 10,000 devices running it. We really gained a lot of momentum early on with our open source version[2]. [1] https://www.screenly.io [2] https://github.com/Screenly/screenly-ose
Although not strictly a Raspberry Pi project, I have a couple C.H.I.P. boards[1] scattered throughout my apartment collecting temperature and humidity readings (using a HIH8120 sensor[2]) and feeding it to my Raspberry Pi which runs InfluxDB and Chronograf[3] to store and display a simple dashboard. The end result looks like this: http://i.imgur.com/cIrhSUq.png [1]: https://getchip.com/ [2]: https://sensing.honeywell…
http://pi.tafkas.net/temperatures/
Blog post: http://blog.tafkas.net/2012/10/03/gathering-and-charting-tem...
1) Internet radio w/ an amplifier in a cigar box. It was a gift for my gf and only plays the station she listened to in college. https://github.com/rocktronica/curpi
2) Timed camera and GIF maker for my cat feeder. https://github.com/rocktronica/feedergif
3) OctoPrint server for my 3D printer http://octoprint.org/
[edit: formatting]
It started as a for-fun project and I'm now working full time on it. So I guess it qualifies :-)
If you want to display any kind of information on your Pi, you might take a look. The code that "runs" the display is written in Lua and the system is pretty programmer friendly. You can even 'git push' and deploy directly on any number of screens. Questions welcome!
a post on hackaday.com led me to a lightning sensor breakout board that connects at 3.3V which is perfect for a rpi. since I live in florida I jumped at it. just got it hooked up the other day, unfortunately NOAA's lightning strike database is a few days behind so in a day or two I'll be able to check the accuracy of it. it's my first electronics project with the rpi and I have definitely learned a lot already
Nice! I've been trying to do this but I haven't been able to find a lightning sensor breakout board that doesn't cost an arm and a leg. Can you link me to the one you purchased?