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by morticiaskeeper
Mon Feb 11, 2019 7:21 am
Forum: Troubleshooting
Topic: SOLVED (sort of) LED flickers and fades
Replies: 8
Views: 512

Re: SOLVED (sort of) LED flickers and fades

The flickering is back! Even on the new pins. When the whole project was put back together, it came back straight away. I'm wondering if it is a power supply problem. It's been on various supplies, but it has to be on one particular supply when in use. The A+ is running a GPS dongle, 2 x 74hc95 shif...
by morticiaskeeper
Sun Feb 10, 2019 10:11 am
Forum: Troubleshooting
Topic: SOLVED (sort of) LED flickers and fades
Replies: 8
Views: 512

Re: SOLVED (sort of) LED flickers and fades

Ground continuity all the way to the input socket of the project. New LED board, with 390 ohm smd resistors and a new LED, although from the same batch. Pi removed from the project and GPIO pins connected directly. Still flickering on all colours, eventually going out completely after about ten seco...
by morticiaskeeper
Sat Feb 09, 2019 3:31 pm
Forum: Troubleshooting
Topic: SOLVED (sort of) LED flickers and fades
Replies: 8
Views: 512

Re: LED flickers and fades

HUD_RGB_LED.jpg # === Control the RGB led === # Import libraries from gpiozero import RGBLED from time import sleep led = RGBLED(20, 16, 12) led.color = (0, 0, 1) sleep(40) The led is buried inside the box, with fibre optics to the display, so I can't get an image. I'm going to make another led boa...
by morticiaskeeper
Sat Feb 09, 2019 10:05 am
Forum: Troubleshooting
Topic: SOLVED (sort of) LED flickers and fades
Replies: 8
Views: 512

SOLVED (sort of) LED flickers and fades

I'm running a RGB led from 3 GPIO pins via 330 ohm resistors. The common cathode connects to a GND pin. Only one colour is called at a time, but whatever the colour, I get a flickering that sometimes becomes a fade in or out. All connections have been remade and a test script gives me repeatability....
by morticiaskeeper
Tue Feb 05, 2019 8:21 pm
Forum: General discussion
Topic: NFC reader with raspberry pi?
Replies: 15
Views: 2824

Re: NFC reader with raspberry pi?

Using the board with the gpio pins, reading was hit and miss.

The USB reader just works.
by morticiaskeeper
Mon Feb 04, 2019 8:47 pm
Forum: General discussion
Topic: NFC reader with raspberry pi?
Replies: 15
Views: 2824

Re: NFC reader with raspberry pi?

The second is the one I use
by morticiaskeeper
Mon Feb 04, 2019 7:34 am
Forum: General discussion
Topic: NFC reader with raspberry pi?
Replies: 15
Views: 2824

Re: NFC reader with raspberry pi?

Having played about with readers, I found better reliability with a USB reader.
by morticiaskeeper
Thu Jan 31, 2019 9:49 am
Forum: General discussion
Topic: How many pieces of pi are too many?
Replies: 72
Views: 3636

Re: How many pieces of pi are too many?

There is a formula for working out how many pi you need:

Requirement = n + 1.

Where n = the number you already have.

This also applies to electric guitars, camera lenses, kites, kayaks, climbing gear...
by morticiaskeeper
Tue Jan 29, 2019 9:33 pm
Forum: General discussion
Topic: How many pieces of pi are too many?
Replies: 72
Views: 3636

Re: How many pieces of pi are too many?

29 so far This may change tomorrow, it's payday :D Are you using them all? How many power ports do you have in your house? Im having trouble powering just 4 of my Pi due to the face each room (except the bathroom and kitchen) only have 1 power socket. 7 temperature senders, 2 security cameras, tele...
by morticiaskeeper
Tue Jan 29, 2019 4:37 pm
Forum: General discussion
Topic: How many pieces of pi are too many?
Replies: 72
Views: 3636

Re: How many pieces of pi are too many?

29 so far

This may change tomorrow, it's payday :D
by morticiaskeeper
Mon Jan 21, 2019 7:55 pm
Forum: General discussion
Topic: STICKY: Making your own custom burn-n-boot Raspbian image
Replies: 42
Views: 20181

Re: Making your own custom burn-n-boot Raspbian image

I have done similar. Starting from a fresh Raspbian Lite on a 4gb card, I've added the packages I use a lot, LAMP server, Python Document Generator, Auto Hot Spot, WPA supplicant. An image has been taken and stored on my server. When I need a new card, I write this image and expand the filesystem on...
by morticiaskeeper
Thu Jan 10, 2019 7:05 pm
Forum: Beginners
Topic: is Raspberry pi as Dashcam a viable option?
Replies: 9
Views: 2266

Re: is Raspberry pi as Dashcam a viable option?

I'm working on one at the moment. I have a Zero W in the van recording 720p at 25 fps. A 32gb SD card is big enough to record 8 hours a day in 5 minute chunks. I have a script that deletes files older than 2 days. If it cannot see a WiFi AP that it knows, it creates its' own AP that I can connect in...
by morticiaskeeper
Mon Jan 07, 2019 6:35 pm
Forum: Python
Topic: Inserting dynamic data into mysql database
Replies: 2
Views: 644

Re: Inserting dynamic data into mysql database

I use this code in all of my remote pi to send the temperature to a central mysql server. Localhost will work on an internal database. The three null inputs are other columns in the database that I don't write to, the db takes care of them. The temperature sensor is read by another script calls temp...
by morticiaskeeper
Mon Jan 07, 2019 6:22 pm
Forum: Python
Topic: Syncing GPIO and Web Interface function
Replies: 2
Views: 302

Re: Syncing GPIO and Web Interface function

I used this:
https://github.com/ThisIsQasim/WebGPIO

It works with my button /led board, even with other Python scripts controlling the GPIO.
by morticiaskeeper
Sun Jan 06, 2019 7:39 pm
Forum: Beginners
Topic: my cousin gave me a pi. now what?
Replies: 8
Views: 737

Re: my cousin gave me a pi. now what?

Just a few things I have built with the pi. Music player, web enabled security camera, intruder detection via PIR, video and smartphone, house temperature logging, door & window security, voice controlled home assistant, aircraft location receiver, file server, fish tank lighting and temperature con...
by morticiaskeeper
Sat Jan 05, 2019 8:45 pm
Forum: General discussion
Topic: Is Raspbian as easy to use as mate/mint?
Replies: 18
Views: 2941

Re: Is Raspbian as easy to use as mate/mint?

I do the vast majority of my development on a Pi 3 B+ in Raspbian. That's 25 different pi projects, mostly involving gpio connectivity as well as cameras, GPS, relays, temp sensors, WiFi probe sniffing, NFC & SQL. My main computer running Debian is only used for writing SD cards because its faster, ...
by morticiaskeeper
Fri Jan 04, 2019 7:25 pm
Forum: HATs and other add-ons
Topic: CW2 piUVS software
Replies: 0
Views: 321

CW2 piUVS software

Does anybody have the software for the CW2 V2 ups board?

A broker is selling some for £4.95, but the software links don't work :(
by morticiaskeeper
Fri Jan 04, 2019 7:11 pm
Forum: General discussion
Topic: Rpi zero w and camera on battery.
Replies: 10
Views: 1002

Re: Rpi zero w and camera on battery.

I tested my dashcam last night. Recording continuous 640 x 480 25fps video, host AP, Apache2 with php, it was drawing .23A
by morticiaskeeper
Wed Jan 02, 2019 6:36 pm
Forum: Beginners
Topic: Displaying a graph and viewing it remotely
Replies: 5
Views: 451

Re: Displaying a graph and viewing it remotely

I do a similar thing in my house. Each room has a DS18B20 attached to a Zero W. Every half an hour, these write to a SQL database on a central server, also a Zero W. The server displays a suite of php pages covering Day, Week & Year with a list of all the data and a google graph for visual represent...
by morticiaskeeper
Sun Dec 30, 2018 7:13 pm
Forum: Advanced users
Topic: Unsupervised Machine Learning for Presence Detection
Replies: 3
Views: 376

Re: Unsupervised Machine Learning for Presence Detection

I have used WiFi probe requests as part of a security system. It would be pretty simple to take photographs when a probe request is detected. Using a white list of known devices means that it won't false trigger. I also have a presence board where known devices are connected to the host WiFi AP. A t...
by morticiaskeeper
Tue Dec 25, 2018 7:31 pm
Forum: Networking and servers
Topic: Raspberry pi3 access point !!
Replies: 9
Views: 1342

Re: Raspberry pi3 access point !!

I followed these instructions yesterday:

http://www.raspberryconnect.com/network ... et-routing
by morticiaskeeper
Thu Dec 20, 2018 7:31 am
Forum: Beginners
Topic: "General Purpose" home server
Replies: 14
Views: 2220

Re: "General Purpose" home server

Noip has to be renewed every 30 days. They send an email giving 7 days notice, log in, click on the confirm button, all done.
by morticiaskeeper
Tue Dec 18, 2018 6:28 pm
Forum: Beginners
Topic: "General Purpose" home server
Replies: 14
Views: 2220

Re: "General Purpose" home server

I haven't had any problems with noip, each pi I want to connect to is set on a different port, so port forwarding takes me too each different pi. I suppose the other way of doing it would be to note down your IP and hope it doesn't change, or get an ISP that will give you a static IP. Pi-hole is ver...
by morticiaskeeper
Mon Dec 17, 2018 8:57 pm
Forum: Beginners
Topic: "General Purpose" home server
Replies: 14
Views: 2220

Re: "General Purpose" home server

Most of my pi are accessible via port forwarding. The way around the IP problem is to use a dynamic service such as noip.com. Sign up for a free account and your router will probably have a way to notify noip of your IP. They will give you a dynamic address that will connect to your system. Set the ...

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