All new Registrations are manually reviewed and approved, so a short delay after registration may occur before your account becomes active.
Share Your Cool Projects!
raindog308
Administrator, Veteran
Hardware, software, Raspberry Pis, sheevaplug auto-rootkits, homemade thumb drives, cool web sites, sex robots...what have you built?
Here's mine. I'm hopefully finishing it up this weekend. We leave Monday for a 4,600 mile (7400km) road trip and I'm hoping to use this to capture elevations and other environmental data as we go...purely for "hey kids, look at these cool elevation graphs from when we went over the Rockies..."
Hardware is done but still have some software to write...mostly the web graphing part. Not sure how we'll that'll run on a 512MB ARM6 1Ghz single core, but I'm used to web servers on 128MB LEBs, so...worst case I can grab the data and analyze/present on my laptop.
The setup is:
(1) R Pi Zero W with environ PHAT records data. It also acts as a WAP.
(2) Second R Pi Zero connects to WAP and gets data, which it displays on its little OLED and makes available via a web server. Long-term history is stored in sqlite.
This could be done with one RPi...but the parts only arrived last night and I didn't want to spend time soldering (and I don't have stacking headers anyways), so I used hammer headers. The display part isn't vital - I could move the web server to RPi #1 and do it all from there, but I had it, and so why not. I'm going to take some serial headers with me as it should be possible to wire one pi to another and get rid of at least one wireless, which will improve battery life.
It's all very rough now - be great if this was all in some kind of sturdy case but it's just the case the big battery came with (which is nice and roomy). My wife prefers to drive so I imagine I'll be hacking on things a bit from the passenger seat through the less exciting parts.
Curious to see how battery life does. While the car is running, I can have the battery plugged in, but when we get out it'll drain. 22000 mAh with two RPis talking over wifi...worst case, they're about 400mAh each. The one thing I wish I had was an easy on/off switch. As it is now, I have to login to shutdown.
Also curious to see how the enviro PHAT performs. From what I've read, the Pi's own heat inevitably skews the temperature sensor, but temp is not something I'm really interested in (it's going to be in an air-conditioned car...)
Now let's see cool stuff you've made!
Comments
Temperature*
I've been trying to make that notification alarm thing but not getting enough time. Check my discussions for link.
Mostly the casing, I assembled a thin cardboard box but it doesn't look any good. Maybe I'll compete one day.
Everyone here knows what my project is.
Raindog308's version uses the compass/GPS and dashcam in his car enviro sensor to know when there is an upcoming curve in the road. When it detects one, it displays "the bend is nigh".
I'll see myself out.
Please make sure you re-program your navigation to not say "You have reached your destination"
@raindog308 - that's a sweet idea! Be sure to take a bunch of pics along the route so you can make a sweet timeline collage after the trip with your elevation data as the backdrop
I was going to say, a chocolate dildo that points towards mecca 23 hours a day, but that's probably facetious.
I've spent too long working on intangible stuff online, I've been thinking about messing around with more tangible stuff.
The closest to 'cool' is an async DNS setup that queries 5000+ hosts a second using some event based stuff and libunbound.
Most of you probably know, I work on metaDedi.
It pulls data, parses it, puts it on a table, works like magic, not rocket science.
Pushing a lot of updates every week, did a bit performance optimization the last days.
I think that my project https://www.jsdelivr.com/ is cool
Especially the infographic https://www.jsdelivr.com/network/infographic
Fun side project I have been working on for a bit:
https://ipinfo.app/
The infographic looks awesome, how was it created?
I built a UPS from scratch for my home NAS.
The whole thing with battery:
Dashboard:
Description:
I designed this UPS to protect my Synology NAS against power blips. It has a 10-19V input and dual outputs, which are currently set to 2x 12V. The total power output this thing is designed for is around 120W. Uses 12V Sealed Lead Acid batteries, I'm using 7Ah right now.
This UPS is composed of multiple parts:
This has been my largest project so far, and I had great time doing it.
If I were to do this again, I would definitely use multiple microcontrollers, one for the logic and one for communication with the outside world. That way I could implement Ethernet and an inbuilt management server.
The web panel on the UPS is cool, a lot of household mainstream UPS' should have something similar!
https://imgur.com/a/z0GnCc5
8 bay UASP capable USB3 NAS with active cooling.
Inspired by this Reddit post
https://www.reddit.com/r/DataHoarder/comments/7w68tx/100_diy_8_bay_uaspusb3_gbe_nas/
I've been seeing jsdelivr in more and more places! Nice work!
Imagine you spilling coffee on it...
Drone programming for security purposes.
My long term project/money pit...
A DC in a garden shed.
It has recently been renamed Teleshed and there'll be a proper web site and social presence some time in the near future.
I am working on an alternative of this: https://edublogs.org/ for all kinds of websites(I will have guides with different types of Wordpress-based websites with list of plugins to choose to complete the experience). Still have to figure, how to spread multi-sites across more than 1 server, rather than replicating boxes.
VSNX might acquire it.
Building guns in my living room. Nothing new if you know me.
I wrote a text explanation of the system with a bunch of links to examples and hired a designer. It took a while but I like the result.
@trewq Thanks, it slowly but surely grows.
Why waste precious elixir....bytes can be and are backed up....can't back up coffee....
Reminds me of the time the simpsons had to send in their drives for data recovery, and sent a thank-you letter after the recovery was succesful:
The pic along is sassy. BTW I'm also working on something similar in my house, it's just missing a rack to hold my servers and your rack is a good size for me. Do you bother giving me some specs of your rack and ways to buy one? Thank you.
P.S I have searched for some racks not long ago, it's either too tall to fit my house (42U ones) or just isn't deep enough to fit a server.
Lack rack (or Lack table for depth) ftw!
Before moving my 12U of rack gear back to ARM SBCs, I used the longer Ikea Lack coffee table with ease.
The rack I have there is a ZPAS half rack (http://zpasgroup.co.uk/). I can't remember the exact model, I bought it some time ago. Will see if I can dig out some more details. I spent a looooong time trying to find a rack with the right specification and at the right price. I'm really happy with the quality of this rack.
Check out this seller on eBay: https://www.ebay.co.uk/sch/zpas.group/m.html
The base rack is one of these. I think the lid etc are optional accessories: https://www.ebay.co.uk/itm/281933989613
our company's website, the most modern of all modern websites, you won't get disappointed
link
endless hours into achieving that masterpiece
:D
An endless loader, well done.
What a waste of 30 seconds and 1% of my iPhone’s battery
-1
great job, nice combination ! any particular piece and price do you have to mention if smb else is goin to do the same ?