Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




171 posts

Master Geek


# 223609 8-Oct-2017 13:10
Send private message

I have a RPi managing jobs on my 3D printer, using Octoprint for the manager and a webcam for checking that it hasn't messed up.

 

When a job finishes I can tell the app to disconnect from the printer, which drops the USB connection and hopefully always leaves it with heaters turned off, but I would also like to be able to switch off the main power supply to the printer.

 

I have looked at some home automation power plugs which have a wifi remote control, are any of these able to be controlled via a RasberryPi running Linux?

 

What safe and reliable options would you recommend?

 

 


Filter this topic showing only the reply marked as answer Create new topic
566 posts

Ultimate Geek

Trusted

  # 1879367 8-Oct-2017 13:31
Send private message

If you're telling the app manually (ie it's not doing it automatically at the end of the print run) to disconnect, perhaps a WeMo switch might be an option? then, after you've told the RPi to disconnet, use the WeMo app to turn the switch off as well.



171 posts

Master Geek


  # 1879382 8-Oct-2017 13:49
Send private message

Cool, there is a command-line tool for that NPMJS belkin-wemo-command-line-tools

 

I would like to make this part of a web interface, so that I can leave a large print job running when I go out.  Also making a camera mount with pan/tilt controls using Arduino gear, which will be the main focus of that web interface (ooh a pun).

 

 

 

 


 
 
 
 


3061 posts

Uber Geek

Lifetime subscriber

  # 1879530 8-Oct-2017 21:26
Send private message

I have the 12V supply to my 3D printer go via a RPi-controlled relay board. The relays are good for 10A, so I use one relay for the heated bed supply and another for the printer (and a third to turn LED lighs on/off). These relays are able to handle 250V AC, so you could do that too. However, I'm wary of working with mains, just because it's legal to play with 10A@12VDC, but not 0.5A@230VAC, so it doesn't destroy your insurance cover.

 

I'm sure you could control a Wemo (or similar) from a RPi. With a bit of luck, you should be able to Google protocols and maybe even find a RPi app that does it for you. I've reverse-engineered some Wifi-controlled LED controllers by using Wireshark to capture how a supplied phone app talked to the device. Simple UDP one-way messaging.


820 posts

Ultimate Geek


  # 1879571 8-Oct-2017 23:50
Send private message

LesF:

 

 

 

What safe and reliable options would you recommend?

 

 

 

I'm using 'fhem' on a RPi3. You can integrate nearly everything (regarding function AND of the shelf systems) - already existing and even new (i.e. Ikea, Hue, Heater Systems, Audio, TV, ...) stuff to it ... and: it's open source.

 

It mostly uses commercial 868MHz, 433MHz or even wired components with their relevant protocols - IP as well (I'm not familiar with your allowed frequency ranges).

 

If you don't fear CLI and some kind of initial familarization effort it's perfect for you and expandable ... https://fhem.de/

 

Edit: I forgot to mention 'Alexa', if you Claim to have that 'women' in your house as well ... ;-)

 

Have fun!





- ISP1: T-OneBox FTTH modem, 1/.5G, full DS, VLAN7, VoIP + ipTV streaming flat

 

- ISP2: 4G/LTE USB modem + TL-MR3020, 100/40M data plan (wireless fallback)

 

- NET: ZBOX nano router, 2 C2960X-48TS-L, 2 GWN7630, 1 GWN7610, 2 UPS

 

- SVR: E3C236 32G/20T, 2 H2 16G/500G, HC1 5T, N2 128G | HC2 14T, HC2 1T

 

- USR: DeskMini 310, NUC8i7HVK, Aspire E5, EliteBook 840, Galaxy Tab, 4K TV

 

- IoT: 3 public/1 private LoRaWAN gateways, various openHAB bindings (CCU3)

 

- 3D: Ender-3, Ender-3 Pro, Ultimaker 2E+, Ultimaker 3, Ultimaker S5, MP-CNC

 

- ipPBX: GRP2613, GO-Box 100, SPA112 (Fax and W-48, a 1948 Siemens phone)


5213 posts

Uber Geek

Trusted

  # 1880503 10-Oct-2017 17:48
One person supports this post
Send private message

Probably not quite what you want but I control electrical outlets using plugin wall modules from Dlink and Insteon via Alexa (and Google Home) to a RPi running OpenHAB and HABridge.





Staying in Wellington. Check out my AirBnB in the Wellington CBD.  https://www.airbnb.co.nz/rooms/32019730  Mention GZ to get a 10% discount

 

System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen, Denon AVRS730H 7.2 Channel Dolby Atmos/DTS-X AV Receiver, Samsung 4K player, Google Chromecast, Odroid C2 running Kodi and Plex

 

 


400 posts

Ultimate Geek


  # 1881984 11-Oct-2017 15:19
One person supports this post
Send private message

Sonoff is your best bet. They rock.

 

https://www.banggood.com/DIY-Wi-Fi-Wireless-Switch-For-Smart-Home-With-ABS-Shell-p-1019971.html

 

+ hack to this firmware...

 

https://github.com/arendst/Sonoff-Tasmota/wiki

 

then easily control via wifi

 

 





 

 


Filter this topic showing only the reply marked as answer Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Ring launches indoor-only security camera
Posted 23-Jan-2020 17:26


New report findings will help schools implement the digital technologies curriculum content
Posted 23-Jan-2020 17:25


N4L to upgrade & support wireless internet inside schools
Posted 23-Jan-2020 17:22


Netflix releases 21 Studio Ghibli works
Posted 22-Jan-2020 11:42


Vodafone integrates eSIM into device and wearable roadmap
Posted 17-Jan-2020 09:45


Do you need this camera app? Group investigates privacy implications
Posted 16-Jan-2020 03:30


JBL launches headphones range designed for gaming
Posted 13-Jan-2020 09:59


Withings introduces ScanWatch wearable combining ECG and sleep apnea detection
Posted 9-Jan-2020 18:34


NZ Police releases public app
Posted 8-Jan-2020 11:43


Suunto 7 combine sports and smart features on new smartwatch generation
Posted 7-Jan-2020 16:06


Intel brings innovation with technology spanning the cloud, network, edge and PC
Posted 7-Jan-2020 15:54


AMD announces high performance desktop and ultrathin laptop processors
Posted 7-Jan-2020 15:42


AMD unveils four new desktop and mobile GPUs including AMD Radeon RX 5600
Posted 7-Jan-2020 15:32


Consolidation in video streaming market with Spark selling Lightbox to Sky
Posted 19-Dec-2019 09:09


Intel introduces cryogenic control chip to enable quantum computers
Posted 10-Dec-2019 21:32



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.