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emcgon
Ireland
Registrace 17. 01. 2008
Video
Wicked Game
zhlédnutí 353Před 28 dny
Anna Kavanagh performing her cover of the Chris Isaac song, Wicked Game
Drift Masters practice at Mondello Park
zhlédnutí 39Před měsícem
Drift Masters practice at Mondello Park
Keeping Abreast
zhlédnutí 58Před 3 lety
Extracts from Keeping Abreast by Eileen Kavanagh, performed by the The Venue Players, Ratoath This was recorded earlier in the year in full compliance with the then-prevailing Covid 19 restrictions Lift Motif by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0/ Source: incompetech.com/music/royalty-free/index.html?isrc=USUAN1100176 ...
Dreaming (Blondie cover version)
zhlédnutí 150Před 3 lety
Anna Kavanagh and I performing the Blondie song "Dreaming"
Time-lapse video of the sky
zhlédnutí 58Před 6 lety
I have been playing with time-lapse photography a little. This video is made up of a photo taken every minute between 3am yesterday and 3am this morning (1,440 photos). The photos are automatically taken by a Raspberry Pi fitted with a camera. The photos are converted to a video using ffmpeg.
Exploring the 555 Timer IC
zhlédnutí 65Před 6 lety
In this video I talk about the 555 timer IC and how it works. We look at the standard 555 astable multivibrator circuit and explore signals at various points inside and outside the IC in a simulation of that circuit in action (you can see the original at www.bogpeople.com/555). Then, we build an implementation of the 555 circuit from comparators, TTL NOR gates, a transistor and some passive com...
Google Home built from Raspberry Pi and USB Microphone
zhlédnutí 320Před 6 lety
Google Home built from Raspberry Pi and USB Microphone. I pretty much followed the instructions at becominghuman.ai/turn-your-raspberry-pi-into-homemade-google-home-9e29ad220075, although I did have to make a slight modification to the main.py Python script. I also included a current-limiting resistor in series with the LED.
Bottle Rocket Fun
zhlédnutí 55Před 6 lety
We put some electronics (an Arduino, an accelerometer and a barometric pressure sensor) into the nose-cone of a bottle-rocket and we launch it
Ratoath College CanSat 2017
zhlédnutí 180Před 7 lety
CanSat is an international competition in which secondary school students design and construct a “CanSat”. This is a drinks-can filled with various sensors, a radio transmitter and a parachute. The can is launched either from a drone, a kite or a rocket and is dropped from a height. The parachute brings it safely (hopefully) back to ground while transmitting data back to base. Ratoath College e...
Experiments with a supercapacitor, a solar cell and an Arduino
zhlédnutí 3,5KPřed 8 lety
Experiments with a supercapacitor (two of them, actually), a solar cell and an Arduino on a nice, sunny day. The idea here is that the solar cell will charge up a series pair of supercapacitors to just about 5V at which time a "switch" is thrown (an Arduino switching on a MOSFET) which dumps all of that charge through a flashlight bulb. The point of the exercise (apart from playing with superca...
"RF Magic" APC220 radio programmer
zhlédnutí 3,1KPřed 8 lety
A demonstration of my standalone programmer for the APC220 radios. EDIT: Apologies to the few people who have asked about this in the comments below: I didn't see your comments at the time you left them. I have released full source code, schematics and a PCB layout for an updated version of this on GitHub at github.com/emcgon/APC220-Tools/tree/main/programmer.
Slow-motion flashbulbs
zhlédnutí 1,4KPřed 8 lety
Long before there were xenon flash-tubes on cameras, there were single-use flashbulbs filled with fine magnesium wire. I had a few of these in a parts-drawer and I wanted to see what they looked like up close and in slow motion when they ignite.
What is the rating of solar panel
How did you configure the APC220 module and the circuit diagram please
Powercap Supercaps 36× 500F Accu Battery 2,7V Farad ➡️ czcams.com/video/ihSc7Bj_oQk/video.html My 660Wp SunTracer Solar Tracker ➡️ czcams.com/video/X0lmYFwOq3U/video.html
Where to get more data to do it?
Very good programming skill in handling the encoder with arduino based c++ n esp some kind board.
How much capacitance are the super caps? And this isn’t as easy to answer, would you happen to know how much current the bulb was drawing?
The capacitors are 3F each, wired in series. This provides 1.5F of capacitance in total, but the pair in series is good for 5.4V (2.7V each). The current drawn by the bulb will obviously vary (non-linearly) with voltage as the capacitors discharge through it. However, I still have that bulb and I just did a quick check and generated two datapoints: at 5V, the bulb draws 750mA and and 3V it draws 580mA.
Thanks - I was thinking of making a solar powered IP camera and using supercapacitors but I think I will stick with rechargeable batteries. I was going to pot everything in if I could use the caps because they would have lasted a very long time. It would have only needed an occasional clean of the lens and solar panel.
hi I have not seen flash bulbs in years so it's a great reminder of a few memorable days from my younger day's
hi just seen your video it's one of the most informative on the apc220 can you please do a more detailed description of the programming of the module as every one seems to skip this part . and then maybe a bit of code as that's very sparce too mostly it's just a demo of there project
Hi Paul, I'm glad you found it interesting. I have completely reverse-engineered the protocol that the "real" RF Magic uses to talk to the APC220s (which is nothing like the programming procedure described in the documentation) and have reimplemented it in Python (as well as making the box shown in this video). If you're interested, I can make my notes from the reverse-engineering exercise (which are fairly detailed) and/or the Python version of RF Magic available to you (or anyone else who finds this video and is interested).
Hi, This and a build guide to your device s.v.p. hahaha! what an awesome thing this is! I hope you could have some spare time and show the world how to recreate this! thanks and good luck with future projects!
Yes Please! I've seen a few sketches of folks programming their APC220 but I have yet to see anyone set NetID and NodeID.
Thanks for uploading 👍