How to connect a hosepipe to the internet
Thursday 9 April 2015
Bad wifi. Bad news.
Sad times. The hosepipe test is cancelled today due to lousy wifi signal. I'll try again tomorrow.
Wednesday 8 April 2015
Proof of concept (verison 0.1)
I've connected a hosepipe to the internet. I'm doing a live test tomorrow morning at danshose.co.uk. Join in, and water my neglected lawn.
A potential problem is that my landlord will turn up at some point to fix a broken wall in the garden. If you turn the hose on at the wrong time, he might get covered in water. Perhaps this could be a live art project.
A potential problem is that my landlord will turn up at some point to fix a broken wall in the garden. If you turn the hose on at the wrong time, he might get covered in water. Perhaps this could be a live art project.
Friday 20 March 2015
Web hosing
I have bought the domain name www.danshose.co.uk.
Can anybody design a better hose for me? Mine is a bit Microsoft Paint.
Can anybody design a better hose for me? Mine is a bit Microsoft Paint.
Thursday 19 March 2015
Land of Hose and Glory
Martyn Currey wrote a very helpful article on how to run a solenoid from an Arduino, and I used exactly the same circuit to make the Raspberry Pi control a 12v solenoid valve.
Classic GCSE electronics. (I've just noticed the diode seems to be wired up wrong, but it didn't seem to matter.)
The Raspberry Pi encourages you to use a programming language called Python. It's an easy-to-use language based entirely on Monty Python's Flying Circus, and so everybody loves it.
Here's the code:
import RPi.GPIO as GPIO # the GPIO library allows us to control the pins
import time # the time library lets us pause
import random # library has random number generator
GPIO.setmode(GPIO.BCM) # I don't know what this does. I copy + pasted it.
GPIO.setwarnings(False) # Perhaps I should find out.
hose = 4 # Sets the GPIO pin the hose is connected to
# Create list with the rhythm of Land of Hope and Glory in quarter notes
pomp = [4,1,1,2,4,4,4,1,1,2,8,4,1,2,1,4,4,4,1,2,1,8,4,1,1,2,4,4,4,1,1,2,8,4,1,2,1,4,4,
4,1,1,2,8,4,1,2,1,4,4,4,4,3,7,4,16]
tempo = 88.34 # tempo in BPM based on conducting of Sir Arthur Bliss
quaver = 60/(2 * tempo) # length of 1 quarter note, in seconds
legato = 0.5 # number from 0 to 1. 1 is full legato but would mean the hose
# ...was on all the time.
GPIO.setup(hose, GPIO.OUT) # I don't know what this does either.
for x in pomp: # Loop through array
on = x * quaver * legato # Time in seconds for hose to be on
off = x * quaver * (1 - legato) # Time in seconds for hose to be off
GPIO.output(hose, 1) # Turn hose on
time.sleep(on) # Wait
GPIO.output(hose, 0) # Turn hose off
time.sleep(off) # Wait
GPIO.cleanup()
It works. Huzzah! The video finishes just before the Pi gets covered in water.
Wednesday 18 March 2015
George Osborne supports me
“The Internet of Things!” crowed the Chancellor. “We’ll invest in what is known as the Internet of Things. So should someone have two kitchens, they will be able to control both fridges from the same mobile phone.”
Uproarious laughter filled the House.
“Why is that funny?” I asked. It
seemed strange. Nobody would laugh like that if I tried to control
two hosepipes with the same phone.
“Ed Milliband has two kitchens,”
said my friend Chris, who has spent the last few weeks reading about
politics. “He was pictured in the smaller one, and someone noticed it didn’t have a toaster. It’s all over the papers.”
Still, I wasn’t sure why the
Chancellor is suddenly talking about the Internet of Things. Quite
often you read about a concept for a fridge that knows when you’re
running out of something and adds it to your Ocado basket. It’s
never been produced, because such a fridge would have to be able to
identify a carrot, figure out if the carrot is limp or squishy, and
predict how many carrots you might fancy eating in the next week. All
of this is impossible.
Also, he wants to “control” Ed
Miliband's fridges from his phone. Who wants to control a fridge? It
needs no control. It keeps food between 3 and 4 degrees celcius. The
last thing I want is Russian hackers breaking into my fridge, raising
it to 6 degrees and giving me listeria.
Luckily, Robert Peston had an explanation.
Osborne appears to have decided on support for the internet of things to generate a two-kitchens gag about ed miliband #budget2015
— Robert Peston (@Peston) March 18, 2015
The budget document itself gave the
confusing detail. The government were giving “£40 million for demonstrator
programmes, business incubator space and a research hub to develop
applications for Internet of Things technologies in healthcare and
social care, and Smart Cities.”
Does a hosepipe count as a smart city?
My friend Jo, who is an expert on healthcare and social care, thinks
so. “It's definitely a smart city,” she blurted. “This is
amazing news. You'll get £35 million.”
She added that if I told George Osborne I was connecting a butler to the internet, I would get £39 million.
She added that if I told George Osborne I was connecting a butler to the internet, I would get £39 million.
Tuesday 10 March 2015
I Speak To Internet, Internet Returns Garbage
I asked my Arduino to connect to the Internet via wifi. Much to my excitement, it found my wireless router and assigned itself an IP address.
But I soon learned that talking to the Internet was the easy part. The difficulty was getting the Internet to listen.
Here is an example:
"Hello, Internet!" the Arduino exclaims. "Could you return me the website of the Guardian newspaper?"
"gÑÿ•ÿ•ÿ£ÿ¹ÿ5jLØ·mÓly-", replied the Internet.
Here is another example:
"Hello, Internet! Could you tell me the weather?"
"HQƒö)3Ì�4ƒ#LXlÙ," said the Internet. "�RÇ«Û7nÃ…S³›7gȾ³Ã˜#´lÚe#F[6eÀ0�Ö-›nÈ™0Õ#&3gÌškÆ–Û6nÔ: 166" (I felt encouraged by the 166 at the end.)
I performed much technical fiddleage, but got similar results. I was baffled. Eventually I decided to google it.
“I've got the same problem!” said a forum poster. “I've just spent seven weeks trying to fix it!” He had not fixed it, and he had wasted seven weeks.
Another forum poster had a similar experience. “Currently at wit's end and rapidly losing both hair and what remained of my sanity.”
This was bad news. One rule of this project is that I should finish with the exactly same amount of hair that I started with.
I did some further googling, to no avail. “Why don't you get a Raspberry Pi?” suggested an anonymous. “They're easy to connect to the internet.”
“You should get a Raspberry Pi”, said another.
So I have ordered a Raspberry Pi. I expect it has a similar battery life to an Apple Watch. But can you connect an Apple Watch to a hosepipe? I think I might finally be winning.
Saturday 28 February 2015
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