Wearables Project – Information Sleeve – Concept

Weather, time, compass …and more high viz  sleeve for bikers/outdoor

Be seen and anticipate problems on the road:

I did 14,000 miles last year – rode up to Tiblisi and down to Athens, two trips to France / Pyrenees. I have information on board the bike – GPS, time, temperature, mpg, range… I have to click through the information button to get each piece of information.  I would like to have something self powered and easy to read while I am riding, particularly in bad weather. It would be a challenge to make some thing rugged and useful to use on long journeys.

I do not necessarily need another GPS but a digital compass would be nice – also a bright LED addressable strip to show temperature, possibly barometer as well by changing colour and lighting up the LEDs along sleeve.

  • Temperature – shown by leds along the arm of ther sleeve.
  • Battery – powerbank NiMd
  • Ruggedized oled
  • Waterprood multicolour addressable LCD strip, display temp by no of lit LEDS and colour for barmteric pressure
  • numeric for displays
  • Realtime clock DS3231
  • HMC 5883L digital compass
  • Barometer
  • Humidity
  • MPU-6050 Gyro, accelerometer

Possible enclosure for components?

LED addressable strip for temp/air pressure display

learn plastic welding of seams

I2C 7 segment diplay for time

OLED display for compass and other information

Waterproof, addressable LEDs sealed into  sleeve

Powerbank to power the unit.

On/off button inside waterproof cushion

This concept for the wearables project is not necessarily ‘art’ but it will involve some opportunity to design and make a rugged outdoor, easy to read sleeve one can wear outdoors – walking cycling, motorcycling. As a keen motorcyclist, I already have a multi-function sensor on the bike, but it is hard to read in bad weather and fiddly to operate, also it can only display one piece of information at a time. This project will combine as many sensors as I can possibly include in the order as shown above.

I will experiment with waterproofing techniques, aim to seal in an oled screen and numeric leds. All will be connected via I2C bus, powered by a decent power bank. A timer will shut the unit down to save power, pressing a button inside waterproof will wake the device up or shut it down. I will use a lilypad or similar to control sensors.

Add Pi Zero with Camera? Luxury version!

Investigate friction welding to waterproof the items in pockets inside the sleeve.

Use of silicone and polycarbonate enclosure to protect OLED inside bespoke 3D printed case.

References: (more to be added)

1. Waterproofing article I found useful

2. Compass as a ring of LEDS

Kinect Hack- doing without an adapter for connection to PC or Mac

Microsoft stopped making the adapter to join a Kinect to a PC or a Mac in October 2017. In the video I go through the steps to work around this proble. The second hand adapter now sells at about 18GBP on eBay. Originally they were free.

First – rip out the cable (plug) with a pair of pliers – it will be tough but it does come out! You are fighting with a square rubber grommet instde the case which can be removed later. The next step is to watch the video, its 35 ish minutes long.


You will need :

  • nylon tie wraps
  • female 2.1mm socket for connecting to 12V 1.5A power supply (you need that as well)
  • a USB type C “A to B cable” (as found wih some scanners or printers)
  • A set of torx security tools

Led 3 x 3 Matrix and Neopixel LED strip

Link to video of Challenge 1 and 2

The exercises started in Hatchlab with breadboards… I found it frustrating that the connections I made in the breadbord were rather fragile but I went ahead and got the two exercises underway.

I decided to take the homework home and solder up a mini board with my Nano to make a testbed for the matrix. It took a little longer than I would have liked but it was worth it. I drew a sketch of the connections (snapshot in the video) – rather than drawing on Fritzing, it was quicker and helped me figure out what I had to do.

I started with the 3 x 3 matrix then I added another row of 3 leds and converted my Arduino sketches accordingly. This is also shown in the video.

The Neopixel library had some good examples and I used them to help learn how to use my 17 pixel strip (I borrowed!)

I have ordered some more Neopixel type strip from China and will return to make a more elaborate display when that arrives. I am thinking of a 10 x 10 diaplay.


Haque Burble


Open Burble. This dates back to 2007 but beautiful use of Sparkfun axis accelerometers in each balloon.

Project End of Term 1

Invisible WiFi made Visible


WiFi is all around us, the connections made by devices as MAC addresses can be monitored, as can the data itself and also  the density of the signals. The aim of my project is to render one or more of these varying things  as an array of self lit cubes. I will be using ESP8266 or similar to detect WiFi data and if possible, extend the concept to mapping out a large space to convert signal strength of WiFi signal sources.


I have already prototyped the ESP8266 to get the MAC addresses into Arduino IDE serial monitor,using a library developed by Ray Burnette to get a serial stream of Media Access Control (MAC) addresses. These will appear and disappear as mobile phones, laptops enter and leave the space. First 6 digits of the MAC address shows the manufacturer, I will research what else I can derive from the MAC address. More recent iPhones obfuscate their identity by throwing up fake MAC addresses periodically as the ping the WiFi. This could be identified in the installation.

The ESP 8266 will have a serial connection to an Arduin which in turn parses the data coming across so that it can communicatewith an Adafruit 16 channel servo shield. By parsing the serial data sent by the the ESP8266, Arduino will  provide the necessary cues for the operation of the physical installation (the grid of flip up doors), communicating with controlling arduino(s) via a serial bus.

Rendering is a part of the project I have yet to consider but I would want more than just showing LEDs or LCD panel, monitor etc.

It is proposed that a 5 x 3 grid of PLA 3d printed cubes laid out inside a flat MDF laser cut frame will contain the electronics and a small LCD screen to plot the progress of data.  When a new MAC address appears, one of the cubes pops up and the LED will light up. As more connections are made on any particular channel, the resspective cube will move in and out accordingly.

I will build a prototype to show a single cube in action.

Initial sketch:

layout for top of case


Lasercutting plan for case



preliminary Frizing (to be updated)


OpenSCAD Sketch of simple mechanism fot moving cubes off servo



Servo arm may well be just wire connecting to (3d printed) red cube yellow cylinder attached to cube may be same as red cube part. Yellow servo isattached to base, lying on its side. Another printed part to be used to hold servo. See Appendix for my Thingiverse part I created some time ago.

Statistics can also be shown on a small Nokia 5110 LCD in any case to monitor progress, alternatively out to a led 7 segment numeric display.

Power to be supplied via 5v phone charger. The servos may need an independent power supply, yet to be determined.

Further ideas:

Data logging to SD card (MAC adresses, visitors and time in and out).

Integrate with other devices, e.g.  TC35 SMS module to send tweets to twitter…

As well as using Fritzing to design the breadboard layout and the layout for the soldered components, I will use OpenSCad to design the 3D printed components and Tinkercad or http://www.makercase.com/ for the main MDF enclosure.


Github.com Expressif/Arduino-esp32

@Igrr IvanGrokhotkov (www.doit.com)


The Glass Room Exhibit Oct-Nov 2017

“Unintended Emissions
Julian Oliver & Bengt Sjölén & Danja Vasiliev
The Critical Engineering Working Group
@julianOliver / @bengtsjolen / @k0a1a

As you make your way around the city each day you are constantly emitting data from your devices and being filmed on CCTV. As you stand here, The Critical Engineering Working Group is using radio receiver–like technology to passively scan the exterior pavement for signals from passing devices. Those signals are then being shown to pedestrians passing by The Glass Room in real time. The devices shown live on the screen are detected and located by ‘unintended electromagnetic emissions’, otherwise known as ‘data transmissions’. They are then represented here, creating a kind of livestream of data passing by.”


TFLto track customers MAC addresses


“The trial, which will last four weeks from 21 November, “will help give TfL a more accurate understanding of how people move through stations, interchange between services and how crowding develops,” according to the transport authority.”


Servo holder stl I uploaded a while ago…


Week 5 Projects 13 and 14

Project 13 Touchy-Feely Lamp

I tried using copper stripboard, Aluminium foil and masking with polythene and paper.



Project 14 Tweak The Arduino Logo

Using Processing to respond to Serial binary feed from Arduino

Variable resister on Analog port converted to digital binary feed to alter the background on a .png fil. Leaving the serial monitor on compromised the connection to the processing sketch,  I had to close it before it worked.


Week 4 Soldering

Using the Hourglass Project from the Arduino Project Book, I mounted a Nano 3 as well to the board. I used Fritzing to plan the schematic and as a tool to check wiring and layout for the stripboard. I had a couple of tries – as it was quite a challenge to cram in the components. Second attempt, I used standoffs to facilitate removal of the Nano 3 (Arduino)


Week 4 – Chapters 10-12

Week 4

Project 10


Project 11

Crystal Ball

Project 12

Knock lock

Assignment: to solder a project on stripboard.

I used a Nano 3 to recreate the Hourglass project, migrating from breadboard to stripboard. Unfortunately, it is not working and I ran out of time this week. The sketch loaded onto the Nano 3 and I did not detect any shorts.

N.B. work in progress, when completed, I will upload a video.

Here are a few snapshots of what I did:

I added a second button but disconnected it via the second 10K resistor. I did not use the tilt switch.

Fritzing diagrams (one is with Nano moved over to the right to help clarify)

Week 2 – Chapters 2-5 From Arduino Book

Chapter 2 Spaceship control + enhancement

Chapter 3 Love-O-Meter (no lips)

Chapter 4 Light Sensitive colour LED

Chapter 5 Mood Cue – For Doctor’s surgery