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by PhatFil
Mon Jun 17, 2019 12:24 pm
Forum: Off topic discussion
Topic: how heavy is raspbian ?
Replies: 30
Views: 738

Re: how heavy is raspbian ?

it aint heavy its my brother,

oh, thats the printer scrub that..
by PhatFil
Mon Jun 17, 2019 3:35 am
Forum: Other projects
Topic: Wire GPIO into remote control PCB?
Replies: 7
Views: 185

Re: Wire GPIO into remote control PCB?

to 'translate' most simple 433mhz Rf signals to Wifi/mqtt publications you can subscribe to within your python scripts flash tasmota firmware onto one of these devices https://sonoff.itead.cc/en/products/appliances/sonoff-rf-bridge-433 https://github.com/arendst/Sonoff-Tasmota/wiki No guarantees.. a...
by PhatFil
Sun Jun 16, 2019 10:34 pm
Forum: General discussion
Topic: Battery for Pi Zero with 3G
Replies: 6
Views: 154

Re: Battery for Pi Zero with 3G

to use a smaller battery you could consider using a smaller simpler dev board with a deep sleep and nominal draw that can wake on a gpio input to control power to the pi-0. that way you can on receiving input power up the pi, connect a 2nd gpio from the dev board to the pi so it can signal when its ...
by PhatFil
Sun Jun 16, 2019 9:58 pm
Forum: General discussion
Topic: Supplying 5v power to RPi & 120VAC to relays
Replies: 14
Views: 316

Re: Supplying 5v power to RPi & 120VAC to relays

buy a nice enclosure for the pi like https://www.amazon.com/Official-Raspberry-Pi-Zero-Case/dp/B06Y593MHV/ref=sr_1_4?keywords=pi-zero+case&qid=1560721531&s=gateway&sr=8-4 and buy something like this and your done https://www.amazon.com/Protector-Multi-Plug-Charging-Outlets-Extension/dp/B0798L4LY4/re...
by PhatFil
Sun Jun 16, 2019 3:27 pm
Forum: General discussion
Topic: Supplying 5v power to RPi & 120VAC to relays
Replies: 14
Views: 316

Re: Supplying 5v power to RPi & 120VAC to relays

So to clarify my original question I'm looking for a component, or list of subcomponents, that would allow me to; Have a female plug that incorporates a grommet fitting it to the product enclosure to pass main power into the product enclosure. Split(and isolate) main power between the hot side of m...
by PhatFil
Sun Jun 16, 2019 3:05 pm
Forum: General discussion
Topic: Supplying 5v power to RPi & 120VAC to relays
Replies: 14
Views: 316

Re: Supplying 5v power to RPi & 120VAC to relays

the reason i suggest the wifi solution is because of the inherent safety of maintaining physical isolation between mains electricity and you. Now when it comes to 'safety critical' application of a wifi smart switch, as its a programmable device, just program it to behave safely. Taking an example o...
by PhatFil
Sat Jun 15, 2019 9:10 pm
Forum: Beginners
Topic: Need information
Replies: 4
Views: 179

Re: Need information

Yes, and you should not have any issues. and No, No problems at all, just like swapping out the system hdd in a desktop pc.. If you used NOOBS to install the raspbian os, then all you need do us plug the new sd card into a usb adaptor and into your pi and use the sd copier utility. make sure your pi...
by PhatFil
Sat Jun 15, 2019 8:57 pm
Forum: Staffroom, classroom and projects
Topic: Dissertation Idea
Replies: 4
Views: 153

Re: Dissertation Idea

Good luck, fwiw all my pals who earnt 1's focused their projects to a myopic scope for a full and complete analysis.
by PhatFil
Sat Jun 15, 2019 8:44 pm
Forum: Automation, sensing and robotics
Topic: valve to control air flow?
Replies: 6
Views: 175

Re: valve to control air flow?

error
by PhatFil
Sat Jun 15, 2019 8:43 pm
Forum: Automation, sensing and robotics
Topic: valve to control air flow?
Replies: 6
Views: 175

Re: valve to control air flow?

i agree try balancing the pressures with flow restriction, a strategically placed needle valve or 2 should do it. a really smart system could detect air flow at each outlet and manage the needle valves with servo control perhaps?
by PhatFil
Sat Jun 15, 2019 8:30 pm
Forum: General discussion
Topic: Supplying 5v power to RPi & 120VAC to relays
Replies: 14
Views: 316

Re: Supplying 5v power to RPi & 120VAC to relays

Hi all that i am aware of is this product line, uk only plugs n sockets it seems? https://energenie4u.co.uk/catalogue/category/Raspberry-Pi-Accessories However one neat and tidy way to avoid mains electricity in your pi project But still control its switching is to use wifi controlled smart plugs. m...
by PhatFil
Sat Jun 15, 2019 3:34 am
Forum: General discussion
Topic: Trail camera
Replies: 3
Views: 119

Re: Trail camera

https://www.raspberrypi.org/documentation/configuration/external-storage.md should get you to grips with mounting and using your usb drive.. How are you intending to power the camera and how long between battery swaps ? compared to devices optimised for long battery life Rpi dev boards can be fairly...
by PhatFil
Thu Jun 13, 2019 11:21 pm
Forum: Beginners
Topic: USB Numeric Keypad with RPI3
Replies: 4
Views: 110

Re: USB Numeric Keypad with RPI3

sounds like you need to identify the characters issued by movement key presses on the numeric keyboard and map them to the codes/chars for the direction arrows that are expected. google tells me this involves editing the file /etc/default/keyboard and then run sudo dpkg-reconfigure keyboard-configur...
by PhatFil
Thu Jun 13, 2019 8:35 pm
Forum: Troubleshooting
Topic: Waterproof DS18B20 isn't showing up in /sys/bus/w1/devices
Replies: 10
Views: 230

Re: Waterproof DS18B20 isn't showing up in /sys/bus/w1/devices

A sensor heating up is an indication of incorrect connection to the pi, which is why I asked to to post a picture. Were did you get your sensors from , there have been a number being sold on some cheap on line sites that are rejects or have incorrect wiring. indeed i bought a set of 10x with ss cap...
by PhatFil
Thu Jun 13, 2019 4:45 pm
Forum: General discussion
Topic: Cannot reliably set static IP address
Replies: 6
Views: 177

Re: Cannot reliably set static IP address

if you suspect a corrupt sd card, you cant trust it or any system installed on it. make a clone onto a new sd card or hdd/usbstick and put that to one side for data retrieval along with any backup media. then get a new sd card and flash a fresh raspbian image .. the guide for setting a static ip by ...
by PhatFil
Thu Jun 13, 2019 12:16 am
Forum: Other projects
Topic: Bare Necessities
Replies: 4
Views: 165

Re: Bare Necessities

just get stuck in ;) if you hit snags that you cant browse your way out of come back and provide full details of the problem.
by PhatFil
Wed Jun 12, 2019 11:50 pm
Forum: General discussion
Topic: Turn RPi 3 on with remote?
Replies: 13
Views: 376

Re: Turn RPi 3 on with remote?

Its a pretty trivial home automation task, the catch being most RPi home automation solutions employ a Rpi 24/7/365 as a system server.. You could with some careful shopping find some compatible gadgets to link together for a solution with your phone and some cloud served apps. Edit** Of course any ...
by PhatFil
Wed Jun 12, 2019 6:27 pm
Forum: Other projects
Topic: Autorefresh file upon save on multiple PIs
Replies: 4
Views: 98

Re: Autorefresh file upon save on multiple PIs

sounds like an ideal job for a light web server with a simple page that opens the document. then have a script running to refresh the page every 5 mins or so on all the clients browsing the page to keep it upto date. edit and save the master linked to by the web page and next time the regular refres...
by PhatFil
Wed Jun 12, 2019 6:19 pm
Forum: Other projects
Topic: WS2811 LED matrix
Replies: 5
Views: 120

Re: WS2811 LED matrix

perhaps look at the 8x8 matrix off the shelf options, and use 3x or 4x.. im pretty sure ive seen a utube or 2 where somone has built a subscriber counter from such displays... https://shop.pimoroni.com/products/adafruit-neopixel-neomatrix-8x8-64-rgb-led-pixel-matrix?variant=382406096¤cy=GBP&ut...
by PhatFil
Wed Jun 12, 2019 4:07 pm
Forum: Automation, sensing and robotics
Topic: Volume Scale
Replies: 3
Views: 333

Re: Volume Scale

a simple solution could be derived from displacement. fill a box with table tennis balls, push an object into the full box, and the number of tennis balls spilt out of the box will give you an estimation of its volume. making it a manual task to insert the object into the ball box to displace the in...
by PhatFil
Wed Jun 12, 2019 3:42 pm
Forum: Automation, sensing and robotics
Topic: irritating battery limits
Replies: 21
Views: 562

Re: irritating battery limits

I think what PhatFil was suggesting was having three cells with separate charging circuits, so one cell could be switched out of the power circuit and put on charge while the others were supplying power. Keep rotating the cells one by one on a charge/power cycle. I don't think that will work unless...
by PhatFil
Wed Jun 12, 2019 1:51 pm
Forum: Python
Topic: Using datetime to control lights
Replies: 11
Views: 268

Re: Using datetime to control lights

Thanks for the help guys. Sorry about not posting the code. I am currently deployed in Afghanistan right now and my internet is not the best. I'm doing the forum stuff on my phone. And writing the code on my pi. I'm building a aeroponics system when I get home and am trying to work out all the link...
by PhatFil
Wed Jun 12, 2019 1:42 pm
Forum: Raspbian
Topic: Unzipping .zip image to SD disk?
Replies: 5
Views: 179

Re: Unzipping .zip image to SD disk?

+1 for etcher, just point it at both your sd card and the raspbian zip archive and wait a few minutes while it writes. https://www.omgubuntu.co.uk/2017/05/how ... -on-ubuntu
by PhatFil
Wed Jun 12, 2019 1:39 pm
Forum: Beginners
Topic: Torrentbox - What are the best options ?
Replies: 4
Views: 146

Re: Torrentbox - What are the best options ?

Open Media Vault and the transmission plug in could be an option for you.

https://www.htpcguides.com/install-tran ... ediavault/


what are your power limitations?
by PhatFil
Tue Jun 11, 2019 10:58 pm
Forum: Automation, sensing and robotics
Topic: irritating battery limits
Replies: 21
Views: 562

Re: irritating battery limits

If using 3 x lipo cells in parallel stepping upto 5v why not also use 3 x tp4056 charge management boards and some additional circuitry to issolate cells from load 1 by 1 for charging.

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