Aaron Parecki

#homeautomation

Øredev 2019

Nov

5

Nov

…

Nov

8

November 5-8, 2019
4 days

MalmöMässan Exhibition & Congress Center

Malmö, Skåne län, SWE

1 mention

permalink #okta #oktadev #oauth #homeautomation
Made it to Malmö! Looking forward to Øredev this week where I'll be giving two talks!

⛏🔐 How to Hack OAuth
https://oredev.org/sessions/how-to-hack-oauth

and

🏠🚫☁️ Smarter Home Automation Without the Cloud
https://oredev.org/sessions/smarter-home-automation-without-the-cloud

See you there! 🎉

Malmö, Skåne län, SWE • 50°F

15 likes 5 reposts 5 replies

Sun, Nov 3, 2019 9:51pm +01:00 #homeautomation #oauth #speaking #oredev
SunCalc - sun position calculator (www.suncalc.org)

Mon, Sep 2, 2019 10:42am -07:00 #homeautomation #suncalc #sun
and now the light behind the litter box glows red when it's dirty and green when it's clean! No more needing to peer into the little door to look for stuff in the box!

Portland, Oregon

4 likes 1 repost 3 replies

Sun, Sep 1, 2019 1:01pm -07:00 #homeautomation
Just made my first Node-RED flow to detect whether the litter box is dirty or clean!

1: When motion in the litter box is detected, wait 5 seconds, check if the door is closed, and if so, set to "dirty"
2: When the door is opened, set to "clean"

Took a bit to figure out all the Node-RED terminology and figuring out how to "think" in that model, but I do appreciate not having to write code to do this now!

Portland, Oregon

1 like 3 replies

Sun, Sep 1, 2019 9:48am -07:00 #homeautomation
Finished the picture frame that shows my upcoming travel!
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⁣It shows my current location and local time, the dates of my next trip, and my departing or arriving flight information! ⁣
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Let's call this v1 tho, because I need to get a better matte for the frame, not just the cheap cardboard that came with it that i tore while cutting it. I might spring for a bigger display next time too! ⁣
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But overall I'm pretty happy with it!

23 likes 5 replies

Fri, Aug 30, 2019 12:18am +00:00 #homeautomation #travel #travelframe #eink #e-ink
Working on a little display that will sit in a picture frame and show my next upcoming flight!

Powered by a raspberry pi which parses the flights from the microformats on my website, and shows either the next upcoming trip, or if I'm currently away, shows the details of the flight home.

This e-paper display is really nice looking too!

Portland, Oregon, USA

3 likes 2 replies

Sun, Aug 25, 2019 9:46pm -07:00 #homeautomation #microformats #epaper #rpi #raspberrypi #travel
I made more progress on the cat feeder tonight! ⁣
⁣I attached the motor to the back, and the shaft now goes thru and connects to the original (modified) plastic shaft from the dispenser.
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⁣The lid has an ultrasonic distance sensor pointing down at the food to be able to tell how much is left in the chute.
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⁣There's a button on top to be able to manually dispense a dose.
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⁣Lastly, I added a terminal block to connect the wires from the scale for easier mounting to the processor later.
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⁣Next up, I need to start connecting all the components to the circuitry! The load cell amplifier, stepper motor driver, and finally the esp32 controller. Then it'll be time to write some software!
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#homeautomation #esp32 #arduino #catfeeder #hackyourcat #cathacks

Portland, Oregon

34 likes 1 repost 5 replies

Fri, Aug 23, 2019 7:59pm -07:00 #homeautomation #esp32 #arduino #catfeeder #hackyourcat #cathacks
Strain gauge bending detection test sensor module weigh amplifier voltage'output | eBay (www.ebay.com)

Thu, Aug 22, 2019 9:59pm -07:00 #homeautomation
Adding a couple new sensors tonight. Attempting a sound level sensor (should report roughly how noisy it is inside), and a color temperature sensor, which I'm hoping can tell me how cloudy it is outside and how much sun is coming in the window.

Portland, Oregon

1 like 1 reply

Wed, Aug 21, 2019 8:13pm -07:00 #homeautomation
the home automation experiments continue tonight...

now attempting to disable the on-board bluetooth of the raspberry pi and replace it with a USB dongle to see if that improves things

Portland, Oregon

4 replies

Wed, Aug 21, 2019 6:38pm -07:00 #homeautomation
oops didn't realize putting the air conditioner and TV in the "living room" group would mean saying "Alexa, turn on the living room" turns both on!

Portland, Oregon

Wed, Aug 21, 2019 9:36am -07:00 #homeautomation
Home Assistant - Plot a Graph with Object's Attributes - Press Start to Stop (www.hiscorebob.lu)

Wed, Aug 21, 2019 7:12am -07:00 #homeassistant #homeautomation
So far out of all the home automation devices I've connected to this Raspberry Pi, the most reliable ones have been 433mhz transmitters and ESP32s on wifi. I've been getting spotty performance of Bluetooth and Z-wave devices. Could be that the Pi isn't powerful enough, or could be because simpler is just better.

Portland, Oregon, USA

1 like 6 replies

Tue, Aug 20, 2019 10:45pm -07:00 #homeautomation
I just installed this neat motor which can drive the chain on my blinds! Now I'm brainstorming various rules to cause the blinds to open and close. So far:

• Close the blinds once the sun is high enough to start shining into the room
• Open the blinds when the sun goes down in the evening
• Close the blinds when the TV turns on
• Close the blinds when I get in bed

Portland, Oregon, USA

2 likes 1 reply

Tue, Aug 20, 2019 8:14pm -07:00 #homeautomation
How not to break manual control of devices with automations | Tinkering with Home Automation (blog.ceard.tech)

Tue, Aug 20, 2019 7:44pm -07:00 #homeassistant #homeautomation
Rapid Cure Strain Gauge Adhesives Manual (assets.omega.com)

Tue, Aug 20, 2019 8:58am -07:00 #homeautomation #pdf
Over the past few weekends I've been overhauling my home automation systems. At the core, as I decide what to buy and how to configure it, there are three primary principles:

• Manual override: Everything automated has to still have the ability to be controlled manually
• Keep it at home: No "cloud" services unless absolutely necessary (e.g. push notifications to a phone)
• Open: Avoid vendor lock-in, use open source and open protocols where possible

So far, I've removed my Dropcam (acquired by Google/Nest), removed SmartThings (acquired by Samsung), and replaced everything with the best alternatives I can find, and making a few sensors myself as well.

It's been a fun experience for sure! Not something I would recommend as an "out of the box" solution, but I've learned a lot, and have a lot more ideas still! I'm planning on doing a full writeup once I get a few more things hooked up.

Irvine, California

10 likes 1 repost 3 replies

Sun, Aug 18, 2019 9:53pm -07:00 #homeautomation #iot
Made some good progress on building my automatic cat feeder today!
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⁣Tore apart a kitchen scale to extract the load sensor and platform. Built a stand out of some MDF board. Attached the scale to the base, mounted the dispenser to the back.
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⁣Tomorrow I get the motor and can mount that to the back as well as wire up all the circuitry!
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⁣In the end, this will be able to drop food into the bowl only if the bowl isn't already full. It'll also track how much is left in the dispenser, as well as hopefully be able to tell when she actually eats by measuring the weight of the bowl!
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⁣#homeautomation #internetofthings #automaticcatfeeder #smartfeeder #diy #arduino

Portland, Oregon

indiewebcat.com

38 likes 2 reposts 6 replies

Fri, Aug 16, 2019 10:23pm -07:00 #homeautomation #internetofthings #automaticcatfeeder #smartfeeder #diy #arduino
Real-time train station departure board - Raspberry Pi (www.raspberrypi.org)

Wed, Aug 14, 2019 7:40am -07:00 #transit #raspberrypi #homeautomation

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