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Best Raspberry Pi Projects

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Re: Best Raspberry Pi Projects

#51

Post by marcosdumay »

croutonwagon wrote: post #46
marcosdumay wrote: post #41

Earlier quoted context omitted.

On the subject of IP-KVMs, I miss¹ something that I can plug on the USB of several computers, and access them by the bare serial interface, without messing with video capture and peripheral emulation. It would be something much simpler than the things available today, even requiring less wires. The main issue I see with it is that it would need to connect to multiple host USBs and only one client. 1 - I actually don'…

Not sure i follow. In this case. Its basically a single USB cable and a HDMI/Video cable. All the Mouse/Keyboard etc is emulated through USB. Which is pretty nice. That was the best part for me. And with modern standards the lag was noticeable, but minimal. That said, in my cases, im just using SSH or something anyway. This was more for outage situations, or in a situation where i need to make a BIOS change remotely…

Oh, you have 1 of those for each server, like a normal IP-KVM. So there's a network, a video and a USB cable for each server, plus the server cables.

It should be able to build a device where you use an extra USB for each server plus one network cable for each 4, 8, whatever (if you push it, your entire hack).

To use it, you would SSH into the pi, and use a command to get a server.

The serial interface is quite old, everything tends to be accessible there. But now that you mentioned, I'm not sure you can update the BIOS with it.

Re: Best Raspberry Pi Projects

#52

Post by brimble »

Auracle wrote: post #22
varispeed wrote: post #21

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 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.

I'm no expert, but I can imagine that automatically opening an air vent to the outdoors, when a fire is detected, isn't a great idea.

Re: Best Raspberry Pi Projects

#53

Post by croutonwagon »

marcosdumay wrote: post #51
croutonwagon wrote: post #46

Earlier quoted context omitted.

Not sure i follow. In this case. Its basically a single USB cable and a HDMI/Video cable. All the Mouse/Keyboard etc is emulated through USB. Which is pretty nice. That was the best part for me. And with modern standards the lag was noticeable, but minimal. That said, in my cases, im just using SSH or something anyway. This was more for outage situations, or in a situation where i need to make a BIOS change remotely…

Oh, you have 1 of those for each server, like a normal IP-KVM. So there's a network, a video and a USB cable for each server, plus the server cables. It should be able to build a device where you use an extra USB for each server plus one network cable for each 4, 8, whatever (if you push it, your entire hack). To use it, you would SSH into the pi, and use a command to get a server. The serial interface is quite old,…

So you can do that if you want, you would probably need some USB hubs to accomplish, and probably a logical way to map out your serial connections, but it should be doable.

https://docs.pikvm.org/usb_serial/

Or in the case of how I did it, i setup a multi-port KVM, that allowed me to manage x number of devices (with video) from a single unit. In this instance, a serial connection was used from the pi to the actual KVM which allowed me to switch inputs etc, from the gui.

https://docs.pikvm.org/multiport/

https://docs.pikvm.org/ezcoo/

https://docs.pikvm.org/multiport/

Re: Best Raspberry Pi Projects

#54

Post by sprash »

phkahler wrote: post #4

Where 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)

Many typical Raspberry pi IOT projects can be done with ESP32/ESP8266 based boards which are highly available and very cheap.

Re: Best Raspberry Pi Projects

#55

Post by tlavoie »

sgt wrote: post #31
margalabargala wrote: post #26

Earlier quoted context omitted.

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.

You can always build a tiny little house for your outside ESP and leave it outside.

Yeah, mine's under a deck, in a travel soap dish with holes drilled in it. Works great! Power for that one is one of those little solar panels with a micro-USB port on it, used for battery-powered security cameras.

Re: Best Raspberry Pi Projects

#56

Post by tlavoie »

sparker72678 wrote: post #2

Many cool ones in this list! Other great ones: - https://birdnetpi.com — Bird call logging - https://flightaware.com/adsb/piaware/ — ADS-B Tracking - https://pi-hole.net — Network wide ad blocking - https://homebridge.io — HomeKit bridge for many devices/services

Is there anything like birdnetpi, but with an ultrasound transducer for bats? I know I have them zooming around, but rarely see them, and would love to know more what their activity is like here.

Oh, checking out the AudioMoth linked elsewhere, looks like that works for recording birds and bats. Down the rabbit hole I go.

Re: Best Raspberry Pi Projects

#57

Post by tlavoie »

brimble wrote: post #52
Auracle wrote: post #22

Earlier quoted context omitted.

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.

I'm no expert, but I can imagine that automatically opening an air vent to the outdoors, when a fire is detected, isn't a great idea.

On that note, one that could open in one direction only would let the pet out, but not open inwards. To the extent that this helps though, I'd wonder more about other things that are risky, like flammable furniture foam/curtains. A room and contents fire gets out of hand faster now than they used to, because the old wood furniture and natural materials are much less immediately flammable. Either way, once the heat breaks a window, that room at least will suddenly have lots of air.

I did subscribe to a monitored alarm service specifically for the smoke detectors, on the theory that while I have little need for a burglar alarm here, I would really want the fire department sent if something started while I was out. I'm on my local department, and usually home, but the neighbours wouldn't know quickly if something happened while we're away.

Re: Best Raspberry Pi Projects

#58

Post by gh02t »

rane wrote: post #37

What would make the best platform for building some kind of personal dashboard/radiator on an e-ink screen? I guess ideally I'd spend as little time as possible on tinkering with low-level rendering code.

Inkplate, with Esphome. Expensive, but a lot of the other large-ish epaper all in one boards are not the best quality or have bad library support. LilyGo makes some nice boards too but I (and others) have had variable quality for the display itself and software support is kinda eh, though there is an Esphome component in the works that is basically complete but not yet merged. Shopping for epaper boards is a pain because there are a lot of different driver ICs with varying degrees of support/open source code; even the same model of board might use the different and incompatible drivers. Inkplate basically just works and have good QC because the displays are harvested from recycled Kindles.

https://e-radionica.com/en/catalogsearch/result/?q=inkplate

https://esphome.io/components/display/inkplate6.html

Re: Best Raspberry Pi Projects

#59

Post by sparker72678 »

tlavoie wrote: post #56
sparker72678 wrote: post #2

Many cool ones in this list! Other great ones: - https://birdnetpi.com — Bird call logging - https://flightaware.com/adsb/piaware/ — ADS-B Tracking - https://pi-hole.net — Network wide ad blocking - https://homebridge.io — HomeKit bridge for many devices/services

Is there anything like birdnetpi, but with an ultrasound transducer for bats? I know I have them zooming around, but rarely see them, and would love to know more what their activity is like here. Oh, checking out the AudioMoth linked elsewhere, looks like that works for recording birds and bats. Down the rabbit hole I go.

Oh this sounds fun!
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