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

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

#271
post #166
post #112

Using several Raspberry Pis to monitor CO2 levels in my house. Each Raspberry Pi has a CO2 sensor - wrote a little Python script to retrieve data from sensor and upload it to a server Which is also a Raspberry Pi.

I am also interested in your CO2 sensor. What kind of CO2 sensor?

This is the sensor that I'm using: https://www.co2meter.com/collections/desktop/products/co2min...

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

#273
My most recent use has been teaching game development. I have kids and their friends are often around the house. A couple of them asked if I knew how to program games and I've been teaching them using Pico-8.

Many of these kids don't have computers at home so as a reward for finishing their first project I'm making them a home console with some RPi's I have laying about and Pico8.

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

#275
post #150

I have a pair of Pi Zero Ws set up as timelapse cameras that I keep in the garden - Cucumber vines and flowers opening is pretty interesting at 1 frame per minute I recently did a project with a pair of RPi 3b+ and cellular modems as construction cameras. I set up RetroPie on a 3b+, but it wasn't enough for the N64 games my wife and I wanted to play the 4 could change that Currently my security cameras are recorded u…

What do you use for the camera? I have some plants I'd like to monitor but the cameras I'd use always ended up dying due to the heat.

one is the latest Pi camera, I also got one of the m12 mount cameras that use the same interface. I have a wide angle lens that has some distortion, but its a nice look for some things. I use a little box that I glued a tripod mount to, keeps the rain out.

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

#276
I don't have a project yet -- but one I'm really interested in is having a Raspberry Pi run and store historical data from an air quality (particle) measurement sensor. I'm hoping to measure how the air quality outside my home (near a freeway) changes during the day and night with traffic, and also how the indoor air quality is impacted.

It outputs UART 9600 baud data (https://sensing.honeywell.com/honeywell-sensing-particulate-...).

Does anyone have a good link to some simple guides / advice on how to run such devices using a RPi?

Thanks!

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

#277
post #112

Using several Raspberry Pis to monitor CO2 levels in my house. Each Raspberry Pi has a CO2 sensor - wrote a little Python script to retrieve data from sensor and upload it to a server Which is also a Raspberry Pi.

What sensor did you use? All the ones I’ve seen tend to be pretty expensive

Yes - the sensors are a bit expensive at about US$ 90 apiece but as I explained in another comment, I think that it has paid for itself

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

#278
I will use my first one to power a hard drive that I leave with family or friends. They'll have a small box (mind the inclusion of an external hard drive, still a relatively small box) with my off site back up, and I could host the same for them.

This is after a failed plan to use it for Android TV (my girlfriend made the mistake of picking a WebOS TV and I made the mistake of thinking it wouldn't be so bad). The old one was just a little too slow and only did full HD (honestly, it's fine, but if you have a 4k TV it feels kinda silly). Now that the pi4 has a bunch more power and can do 4K at 60Hz, there is another chance for this!

I'm also toying with the idea of using it for sensors. Battery powered air quality sensor to see along my walking route (there is a narrow, busy car passage that I'm curious about), or maybe measuring things like electricity or heater usage in realtime. Having a graph showing you when it gets used a lot might help identify some easy wins, since walking to the basement to check the meter is a little cumbersome. But those are just ideas.

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

#280

I have several * Pie-hole and runs Nagios to collect information about things going on inside the network. * One running a PiDP-11 (pdp 11/70 emulator) as well as providing MOP service to boot my DEC terminal multiplexor (it provides the boot image when the mux comes up) * One is a stratum-1 time server using an Adafruit GPS module with PPS output. This because I got tired of both the reflection attacks and trying to…

In term of electricity consumption and maintenance is worth to run so many PIs?
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