Ask HN: What do you do with your Raspberry Pi? • Hacker News Board

Re: Ask HN: What do you do with your Raspberry Pi?

#631

Post by quartz » Tue, Jun 25, 2019, 1:55 AM UTC

trimbo wrote: post #381

quartz wrote: post #54

The coffee machine in our office is controlled by blockchain NFTs and a Raspberry Pi: Once authenticated, an owner of the NFT can select their coffee type on their phone which then signals the Raspberry Pi to make whatever coffee type was selected by jumping the contacts that used to be pressed by the machine's buttons (which have been removed). It's a cool gimmick, fun to show off to visitors, gives us a nice record…

Does it record on the blockchain who took the last cup of coffee and didn't make more? Everyone in every office would pay good money for that.

It doesn't write individual orders to the chain. It could if we funded a wallet to pay the gas to write those records but right now it just does authentication of NFT ownership to grant access, which is conveniently free. The history logs are stored locally.

Re: Ask HN: What do you do with your Raspberry Pi?

#632

Post by CameronBanga » Tue, Jun 25, 2019, 1:56 AM UTC

MisterTea wrote: post #397

thecodemonkey wrote: post #95

1x Raspberry Pi 3 installed in my car within the internal network as a bastion box and to run software that let's my interact with the entertainment system 1x Raspberry Pi 3 running Home Assistant with a Z-Wave USB Dongle (Home Automation) 1x Raspberry Pi 3 running OctoPrint (Host/remote-control for 3D Printer) 1x Raspberry Pi 3 running FullPageOS (Full-screen Chromium in kiosk mode) displaying a server statusboard i…

> Next project: 1x Raspberry Pi Zero W to run Unifi Controller Ugh, have fun with the dependency issues. An easy alternative is to run a Unifi docker image. Currently running it from a Debian VM when needed but looking to move it to an alpine vmm on my OpenBSD APU2. The Linux image is the same as the cloud key so you can roll your own cloud key and use the unifi app. Here is the image I use though there are others: h…

Take a look at Hostifi if you want your own server at a reasonable cost without having to deal with the management.

Re: Ask HN: What do you do with your Raspberry Pi?

#633

Post by n8henrie » Tue, Jun 25, 2019, 1:59 AM UTC

el_benhameen wrote: post #179

I love and hate this question! I've always been curious what others do with them, but I just convinced myself not to buy a 4 and I'm sure this thread will give me reason to reconsider. -1x Raspberry Pi Zero W in my garage running my drip irrigation (a relay board connects it to standard 24V irrigation solenoids) -1x Raspberry Pi 3 B+ in my office running a dynamic dns script and sitting behind a forwarded port for ea…

Did you need to do anything special to control the 24v solenoids?

Re: Ask HN: What do you do with your Raspberry Pi?

#634

Post by bengrunfeld » Tue, Jun 25, 2019, 1:59 AM UTC

I have a cat hooked up to a car battery in an unused garage somewhere in the Bronx. The Raspberry Pi interfaces between the battery and a 20+ person WhatsApp chatroom via API and anytime someone mentions the word "shock" (or any other word with a negative association), the cat gets it.

FYI - this is a joke, but effectively conveys the point: the only limits are in your imagination... and tech skills.

Re: Ask HN: What do you do with your Raspberry Pi?

#635

Post by m463 » Tue, Jun 25, 2019, 1:59 AM UTC

gregsadetsky wrote: post #617

There's a bus station across from my studio / coworking space. I can see people waiting for the bus and doing either: 1) staring into the void 2) looking at their watches 3) desperately glancing in the direction where the bus is coming from. I figured that it'd be nice to let people know when the bus is supposed to be there. So, I installed a 28" display on a monitor stand, installed the stand on my window frame, tur…

That is a very kind thing to do.

Re: Ask HN: What do you do with your Raspberry Pi?

#636

Post by anonu » Tue, Jun 25, 2019, 2:01 AM UTC

Some projects:

Easy Setup (Download and Run):

- ADS-B decoder and transmitter to FlightAware

- PiHole

Required More Coding:

- PhotoBooth: Python script that monitored a special Gmail account and sent attached images to a photo printer (Canon Selphy)

- Upload to Dropbox: ScanSnap sheet-fed scanner, listened to scanner button response, created PDFs, copied to DropBox

- Data Collection Engine:

1. Collected data from local sensors (temperature and humidity) in nursery.

2. Collected periodic data from public APIs (NYC CitiBike)

3. Captured time lapse images from nursery every 2 minutes.

Re: Ask HN: What do you do with your Raspberry Pi?

#637

Post by st380752143 » Tue, Jun 25, 2019, 2:01 AM UTC

gregsadetsky wrote: post #617

There's a bus station across from my studio / coworking space. I can see people waiting for the bus and doing either: 1) staring into the void 2) looking at their watches 3) desperately glancing in the direction where the bus is coming from. I figured that it'd be nice to let people know when the bus is supposed to be there. So, I installed a 28" display on a monitor stand, installed the stand on my window frame, tur…

In China, they can get these bus message on a smartphone at mostly main city. The app would show the bus location and predict the time bus would reach according to the traffic status graphically.

Re: Ask HN: What do you do with your Raspberry Pi?

#638

Post by vivekkalyansk » Tue, Jun 25, 2019, 2:02 AM UTC

Anyone has any experience using it as a NAS? Is the I/O too slow for it to be smooth?

Re: Ask HN: What do you do with your Raspberry Pi?

#639

Post by anonu » Tue, Jun 25, 2019, 2:03 AM UTC

sparker72678 wrote: post #527

I have 13 in service right now: - Outdoor irrigation control via OpenSprinkler Pi: https://opensprinkler.com/product/opensprinkler-pi/ - Z-Wave home automation via ZWay: https://z-wave.me/products/razberry/ - 2 Custom HAVC thermostats using: https://github.com/jeffmcfadden/PiThermostat - An NTP server with GPS attached for a time source. - 2 for weather monitoring (one directly attached to sensors, one that aggregate…

> Z-Wave home automation via ZWay:

Whats your success with this? I am not referring so much to the Raspberry Pi part - but the actual ZWave protocol and whatever mesh network it creates. Is it reliable? Or do your lights flicker on and off randomly?

Re: Ask HN: What do you do with your Raspberry Pi?

#640

Post by ezconnect » Tue, Jun 25, 2019, 2:04 AM UTC

gregsadetsky wrote: post #617

There's a bus station across from my studio / coworking space. I can see people waiting for the bus and doing either: 1) staring into the void 2) looking at their watches 3) desperately glancing in the direction where the bus is coming from. I figured that it'd be nice to let people know when the bus is supposed to be there. So, I installed a 28" display on a monitor stand, installed the stand on my window frame, tur…

In S. Korea most bus station have a display showing the current position of the bus and the estimated waiting time. Recently they are changing the display to show the bus stop remaining and removed the estimated time of arrival.

Lots of people use app so when the bus is about to arrive the bus station will suddenly get busy and full of people.