I wish I could find a project that would recognise a cat by its appearance and open / close a cat flap based on that.
It could also make a noise or other distraction at cats that are recognised to deter them from tampering with the cat flap.
The cat flaps available on the market use a chip to identify a cat, but this is a terrible method - it doesn't work more often than it does.
Many times my cat was attacked by other cats because it couldn't get in and now it is scared of cat flaps.
Best Raspberry Pi Projects
21–30 of 69 posts
Re: Best Raspberry Pi Projects
#22I wish I could find a project that would recognise a cat by its appearance and open / close a cat flap based on that. It could also make a noise or other distraction at cats that are recognised to deter them from tampering with the cat flap. The cat flaps available on the market use a chip to identify a cat, but this is a terrible method - it doesn't work more often than it does. Many times my cat was attacked by oth…
Maybe things have changed, but when I was looking for doggy doors I was dismayed nobody made one that would automatically open in case of a fire.
Re: Best Raspberry Pi Projects
#23I wish I could find a project that would recognise a cat by its appearance and open / close a cat flap based on that. It could also make a noise or other distraction at cats that are recognised to deter them from tampering with the cat flap. The cat flaps available on the market use a chip to identify a cat, but this is a terrible method - it doesn't work more often than it does. Many times my cat was attacked by oth…
Maybe this could be a starting point: https://joakimsoderberg.github.io/catcierge/ ?
Re: Best Raspberry Pi Projects
#24I'll hijack this thread to ask: What are some good Pi alternatives that don't need blobs to boot and run, and that use mainline (or more-or-less mainline) kernels? I don't need any video output, and I'm happy to pay double. What are my options?
If you just need a tiny, fanless board that runs linux, like-new Wyse3040 can be had in any quantity you like for ~$30 - $40 (ethernet only, though). Wyse5010 is a bit bigger and more capable (and has built-in wifi) around the same price.
Where are you seeing these for those prices? ebay? It'd be interesting to see what could be done with boards like this
Re: Best Raspberry Pi Projects
#25If you want to monitor things around you, and you have an SDR dongle set up, rtl_433 is handy. I have a Pi 3 running it to graph temperature and humidity readings from a couple of remote-reading sensors, plus barometric pressure from a Sense Hat and voltage, load, and battery readings from my UPS. It will display selected readings on the LED display, but I mostly just let mrtg/rrdtool do its thing. https://github.com…
My first thought was, "Why would I need SDR to read temperature/humidity from sensors", then I realized these are more like wireless weather stations.
Out of curiosity: why did you decide to purchase ready solutions instead of rolling your own using ESP32 for a fraction of the price?
Re: Best Raspberry Pi Projects
#26If you want to monitor things around you, and you have an SDR dongle set up, rtl_433 is handy. I have a Pi 3 running it to graph temperature and humidity readings from a couple of remote-reading sensors, plus barometric pressure from a Sense Hat and voltage, load, and battery readings from my UPS. It will display selected readings on the LED display, but I mostly just let mrtg/rrdtool do its thing. https://github.com…
My first thought was, "Why would I need SDR to read temperature/humidity from sensors", then I realized these are more like wireless weather stations. Out of curiosity: why did you decide to purchase ready solutions instead of rolling your own using ESP32 for a fraction of the price?
Not the person you replied to, but someone who did the same thing:
Most of the things inside my house are ESP32 or zigbee things I put together myself. Things that go outdoors, though, I'm much more likely to purchase an off-the-shelf solution for longevity's sake. Especially if the whole point of the item is to be rained/snowed on, be left in direct sunlight, and so forth.
Re: Best Raspberry Pi Projects
#27If you want to monitor things around you, and you have an SDR dongle set up, rtl_433 is handy. I have a Pi 3 running it to graph temperature and humidity readings from a couple of remote-reading sensors, plus barometric pressure from a Sense Hat and voltage, load, and battery readings from my UPS. It will display selected readings on the LED display, but I mostly just let mrtg/rrdtool do its thing. https://github.com…
My first thought was, "Why would I need SDR to read temperature/humidity from sensors", then I realized these are more like wireless weather stations. Out of curiosity: why did you decide to purchase ready solutions instead of rolling your own using ESP32 for a fraction of the price?
These devices actually end up being kind of hard to engineer, measuring air temperature accurately especially can be kind of tricky. And then add in that for a weather station it has to be resistant to the elements and low power. Speaking from experience, you end up spending more money and a lot more work going the DIY route except maybe at the high end. You can get an Acurite temp/humidity/lightning sensor that is fine outdoors and batteries last for ages for like $25.
Not that there isn't value to rolling your own, just I wouldn't assume it's as cheap and easy as you might originally.
Re: Best Raspberry Pi Projects
#28No blog post or pictures but I have taped an ADXL345(accelerometer) on the back of my washing + dryer and I'm using a pi to notify me when a load is done.
Didn't have the time to put a fancy algorithm to detect movement so it's rough, but it has been working perfectly for the past 4 years with no false positive/negative.
Re: Best Raspberry Pi Projects
#29Where can I get a Pi these days. I have a work project (low volume need about 5 Pi) where I replaced a Matrix Orbital LED display and custom membrane keypad with a Pi and touchscreen. I used my own personal Pi model B but I need a few for the company and they are out of stock everywhere. (displays are not a problem, just the Pi itself)
Depends on where you live, but here in Canada, PiShop (https://pishop.ca) usually has 4B kits in stock. I haven't seen single boards being available for a long time though.
Re: Best Raspberry Pi Projects
#30One of the recent ones I did was a Pi-KVM.
Im honestly considering deploying these at work to replace some aging (and expensive) dell, java based ipkvms. I like it enough i made a second one to attach to a small headless desktop. Mainly just as a cheap quasi-OOB management.
Mine use h.264/webrtc or html5/mjpeg and on one i even hooked it up to a smaller kvm to give me a 4 port switcher via the webUI. Pretty slick and all told was under $400 for a 4-port model. A single pikvm, including the case and everything was about 100 bucks.
With some systems (ie: supermicro) and a ribbon cable, you could rig up ATX controls as well.