Browsed by
Month: January 2014

Compacting Part 1 – Current state of the setup

Compacting Part 1 – Current state of the setup

This will be a 6 part series of entries covering the re-design and install of the signaling system installed last quarter.  In this part I’ll be going through what the current setup consists of. Why the revamp?  To summarize it as simple as possible, it’s goofy.  To go into detail, here is a list of the reasons. The headlamp assembly is too big for the bike.  The hardware that holds it in place is temporary.  Since the install, no permanent…

Read More Read More

Sleek, Stylish, & Compact – The art of appearances

Sleek, Stylish, & Compact – The art of appearances

The idea behind including integrated design into this quarters topics list was simple.  I have built far too many projects that have the appearance of being built in the basement.  It is a skill that is virtually absent.  At most I was able to tidy up some of my projects.  Looking back, this is just a starting point.  The devices, projects, and gadgets could really benefit me more with a WOW factor from the casual onlooker.  I’m afraid that the…

Read More Read More

Making the Connection 2

Making the Connection 2

Sourcing specific low voltage signal cabling and connectors has proven to be more of a challenge than finding sensors or micro controllers.  The hunt for a one stop shop that offers flexible black cable with various conductor counts at 22 AWG is turning up nothing.  All Electronics looked the best option but I was able to find a local seller (DataPro) in Seattle, WA.  Three other sources looked promising, one that I had already used before.  Here is a list…

Read More Read More

Sound – The early wireless communication protocol

Sound – The early wireless communication protocol

Air pressure, defined by the popular perception of the meaning is the amount of air in your car tires.  A meteorologist would be inclined to refer to it as atmospheric pressure, which is measured with a barometer.  However, the physicist might say that the air molecules are repelling each other at a static rate until an outside force acts on them.  All of these groups are correct. In short, air is a soup of various molecules of gas, liquid, and…

Read More Read More

Sniffing the Planet Bike Blaze 1W Headlight

Sniffing the Planet Bike Blaze 1W Headlight

I decided to see if the Planet Bike Blaze 1W Headlight had some PWM going on behind the scenes. It seemed to me that the logic analyzer would be perfect for this task.  I was actually surprised by the results.  One thing that I did decide on was using different test equipment in succession so nothing got smoked. First test was using the voltmeter.  It could handle it, since the headlight was powered by 2 AA batteries in series, aka…

Read More Read More

Making the Connection

Making the Connection

I’ve had mixed success with micro controller cable interconnects.  My first experiences at wiring was humble.  I leaned heavily on standard 3mm audio jacks due mainly to the low learning curve.   As my projects became more complex, the limitations with this became clear. Simply doing a search for Molex on Google will reveal the dilemma that the newcomer has to face.  I couldn’t make the connection.  The endless sea of pitch, ratings, conductor type, latch types, etc. just made the…

Read More Read More

Test Equipment and Uses

Test Equipment and Uses

The Saleae logic tester arrived in the mail yesterday evening. It will join the other pieces of hardware I have. I thought, why not do a give a brief description of the equipment I have. So here it is. Saleae Logic Analyzer 5.25V The trigger and capture of digital signals will be key to identifying 3 party hardware protocols. The is the first step in interfacing custom hardware to the 3 party hardware. PropScope 10Vdc / 20Vpp Parallax’s Propeller based…

Read More Read More

Making the Case 2

Making the Case 2

Making cases and enclosures always seemed like a job that required specialized tools.  Most of my attempts at making enclosures resulted in some sad looking boxes.  I just settled on using enclosures already fabricated.  This presented its own set of problems.  Fitting became an issue, the boxes would be either too big or too small.  Another problem was machining the enclosures so I could place connectors, switches, or displays.  All said, my skills at making enclosures is truly poor.  This…

Read More Read More

Making the Case

Making the Case

While heading into work yesterday I spotted a new traffic camera that was placed on the Ballard Bridge.  Still reeling from the lack of inspiration, it struck me that I should take a quick inventory of enclosures around town.  If nothing else, I’ll at least have something to reference later on.  This was a relief and so I went about taking pictures that afternoon.                           The various types…

Read More Read More

Parts is parts – Woohoo

Parts is parts – Woohoo

With this being the first blog entry for the quarter, I thought I’d start with the overwhelming and confusing starting point.  Aside from this being the first day, I really don’t have a solid direction to take.  I’m not new to this feeling, so I have to say it isn’t that overwhelming or confusing.  It’s more like a slow and uneventful start to the gusto I had imagined a couple of weeks ago.              …

Read More Read More