embedded systems to learn and create
Learn the basics of Computer Languages: c, PHP, Python, Bash
All four languages will be covered, where it will be apparent the similarities and differences of each.
Be sure to BRING a LAPTOP, as these are hands on sessions.
This session: Arrays
Saturday, February 22, 2020
10:00 AM to 12:00 PM
Camosun College Interurban Campus
4461 Interurban Road · Victoria, BC
Tech Bldg, Tec 177
A Special Interest Group focused on computer networking. Building networks for Today and Tomorrow!
Half of the meeting is education, or presentation. Half is sharing, and problem solving.
Bring a laptop with Wireshark installed: We’ll be running a hands on workshop using iptables/ip6tables/bpf (BSD Packet Filter)
Thursday, February 20, 2020
6:30 PM to 8:00 PM
Q-CollegeSuite 303 771 Vernon Ave · Victoria, BC
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.
Or the piezo can be used as a microphone, providing about 100mv into a very high impedance input
In May we can show what we achieved.
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:
*** shown in the included 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.
Learn the basics of Computer Languages: c, PHP, Python, Bash
All four languages will be covered, where it will be apparent the similarities and differences of each.
Be sure to BRING a LAPTOP, as these are hands on sessions.
Saturday, January 25, 2020
10:00 AM to 12:00 PM
Camosun College Interurban Campus
4461 Interurban Road · Victoria, BC
Tech Bldg, Tec 177
Sure you can run an ad blocker on your device, but only your device benefits.
In this talk, we’ll compare PiHole, a popular ad blocker for the Pi with adblock for OpenWrt, and the benefits of doing so.
Saturday, February 8, 2020
10:00 AM to 12:00 PM
Q-CollegeSuite 303 771 Vernon Ave · Victoria, BC
Using Nexus DR-S hat on your Pi to control your Amateur Radio. Nexus DR-X (aka: DigiLink) is a digital radio cross patch that allows you to link the Raspberry Pi sound card of your choice to nearly any amateur radio transceiver to enable perfect digital data communications.
The Buster RPI image includes a host of Ham apps and a simple dialog box that makes updating and installing your favorite programs easy. Deid’s presentation notes are here.
10:00 AM – 12:00PM
Q College Suite 303 771 Vernon Ave · Victoria, BC
A Special Interest Group focused on computer networking. Building networks for Today and Tomorrow!
Half of the meeting is education, or presentation. Half is sharing, and problem solving.
Bring a laptop with Wireshark installed: We’ll look into scanning networks with NMAP, and what info you can glean from it.
Thursday, January 23, 2020
6:30 PM to 8:00 PM
Q-College
Suite 303 771 Vernon Ave · Victoria, BC