Browsing All Posts filed under »Design«

First Add-On board schematics, speed sensing, Faire

August 19, 2014


Njay: Ok, new revision with LEDs for the I²C on both sides of the insulator, with a port for the motor temp sensor and a second sensor for the bridge temp (there’s 2 heat sinks per bridge). At the moment not providing for the external speed sensor. Using a Hall or other type where we have […]

Open source repository, new add-on board

August 17, 2014


Vnevoa: My recently acquired mastery of Git has allowed me to split the GitHub repository into several branches. If you please: git clone -b MarkIV_RasPi_NJAY DiffTrike and put everything under /NJAY. There’s a README there so you can fill it with your inspirations and a “header.gplv3” that you can add to all your source files. […]

Main goals

August 16, 2014


Njay: MUST DO: 1 -Was it the RasPi or the bridges who reset? Yep, we better insulate them galvanically, although that ain’t simple. My opto scheme won’t do, it’s too slow and this protocol is too time-sensitive. To maintain a bi-directional protocol with a the clock line (like SPI or I²C) we need 3 lines […]


August 15, 2014


Njay: Is this diagram complete? The turn-on/pre-charge block is more complex, right? And I think there was a connection for the RasPi to control it?… We need up-to-date diagrams to know where we are. Vnevoa: that turn-on connection was never implemented, but the rest is all there. Basically there’s one transistor missing. You have those […]

Difftrike Design – the conceptual sketchups

February 16, 2012


Remember I told you that Manuel started creating designs? Well now is as good a time as any to show you guys what we’ve been playing with. We’ve got six animation videos to show off the ideas we’ve been entertaining. Manuel has been very busy riding his new computer and learning digital 3D, whereas I’ve […]

Difftrike Design – Enter the artist

December 4, 2011


So, I had a real-scale SoapBox proof-of-concept, a toy-sized folding trike concept, and a bunch of difficult ideas to glue together. As usual it looked like I had bitten more than I could chew. Fortunately, another out-of-the-box thinker and professional tinkerer came to my rescue.

Difftrike Design – How it all began

November 22, 2011


One of the things I have been too lazy to do is tell you the story of all the brainstorming and creativity that has been going on for a long time behind our virtual doors. Well, enough procrastination, let’s publish it. 🙂