T’is the season for bright lights and Raspberry Pi fun.
In this talk we’ll look at a ModMyPi Programmable Christmas Tree (MMP-1021), which sits atop the 40 pin header and presents a set of individually controlled LEDs. The trick to practical and easy use of the tree is via GPIOZERO, a fantastic python module. We’ll integrate some sensors as well, since GPIOZERO makes them very easy.
I decided to build my own Raspberry Pi music player using Python, as the available players didn’t really do what I wanted. This is Python at the beginner level, and the saga of making the player. Mostly it is about the little things in Python that caused me to stumble for a while. The music player is functional, the interface isn’t elegant, and I learned a few things about Python programming. – Don
Due to the current situation @ March 14, 2020, in-person meetings have been suspended until further notice. Please do join us on Slack or at our online learning sessions using Jitsi. Write to hello at vicpimakers.ca for invitations and information.
Q-CollegeSuite 303 771 Vernon Ave · Victoria, BC – 10am
1) Hack Challenge, by George Modify a window alarm to be a useful or entertaining device. Window alarms to be supplied free March 14th, one per attendee.
3) … bring projects that you want to share or need help with… If you like, email a description to be added to this page.
It is fun to repurpose battery powered consumer products. For instance, here is a Leak Detector made from a window alarm. The article includes the window alarm schematic.
And George made a bike theft deterrent alarm with remote radio alerting from the same window alarm.
In normal operation, the window alarm senses separation from its external magnet via its internal reed switch and feeds its piezo disk with an oscillation. The window alarm runs on 3 button cells and draws no current when the reed switch is open. There is also a slide switch to enable/disable the alarm.
Here is a photo of the circuit board: The OUT signal from the 8 pin oscillator chip is a 10V DC wave, pumped up by the inductor from 5 volts. A voltage divider can be added to lower this chip output signal to less than 5v to feed another device.
Deid successfully connected a 50 light string of addressable LEDs to an ESP8266 to cause the lights to light and change colour and move and …
Deid created the following patterns:
Random On ***
Dual Colour *** *** Shown in the images
The ESP8266 C code to do this can be found here. Deid makes no representation that the existing code is good. In fact he knows some of it is not. Feel free to fix.
The challenge is to add more patterns and the code to implement the patterns. If you send Deid the code he will load and try the code. Unless someone comes up with a better way for folks to test remotely.
Over the years, we have found certain software tools, which not only make our life easier but make the project more fun to do. In this meeting, we’ll share some of these software tools, and ask the group for other tools that they have found useful.
VicPiMakers will be supporting Projects in 2019. What are Projects? Deid’s pond is a project, for example. If you have a project idea, bring it in and we’ll see how we can help you complete your project.
George Bowden – Timed Lock Heidi Bada – Intro – https://badadigitalmarketing.com/piprojects/ Ideas Phillips Hue – timed dim/colour Weather Sensors Wearable Sensors in sport Home Safety – Flow sensor in toilet Launchpad pro using python – Open Firmware project Environmental Sensors – birdfeeder motion (wisecam), soil moisture Pi version of “the clapper” Eileen & Cody – Space Station Light & Sound – https://github.com/cozyhost/ Plan on lighting Neo Pixels Peter Sprague – Packet Radio Satellite tracker Portable, run in truck Moved from Pi, to FreeBSD Dan Willis – LED running as a Canadian flag flying Weatherproof boxes outside
10:00am Q-College, Suite 303 – 771 Vernon Ave, Victoria, BC
Contact projects at vicpimakers dot ca to share your project on our next Project Day.
Q-College, Suite 303 – 771 Vernon Ave, Victoria, BC
Hosted by George Bowden and Craig Miller
LIGHTS OUT, a possible life saver. An acquaintance fell in the washroom and was unable to raise attention for thirty hours, and never fully recovered. The monthly cost ($50) of wearable alert bracelets and the habit of not wearing them is a large risk to seniors living alone. This alarm system, based on an ESP8266 and a php web app, alerts friends that a bathroom light has been left on for way too long. The link to the presentation docs is here.
Suite 303 – 771 Vernon Ave, Victoria, BC
Jim’s presentation focuses on interfacing sensors and devices ( modules) to microcontrollers followed by actual examples. Two or more examples will be discussed using I/O from pulse inputs, IR transmitters/receivers, accelerometers, load cells, Bluetooth SPP and motion controllers.
Suite 303 771 Vernon Ave, Victoria, BC
Discover the advantages of Power of Ethernet (PoE)! PoE is a technology that allows one to only run one cable to a distant device, just an ethernet cable. The distant device not only receives network connectivity, but also power from the single cable. This is good for small low power devices such as ESP8266 (embedded controller) boards. Hosted by Mark G. RSVP on Meetup here.
Why have a personal webserver? Easy distribution of files.
Why support IPv6 and IPv4? Not only is it cool, but it is very easy to do. IPv6 is the future of the internet, setting up a little personal webserver that supports both protocols will help you learn about the future.
The Internet of things now can control things wirelessly. Control of things using inexpensive radio frequency switches (operating on 433 Mhz) and an ESP8266 micro controller.