Bike -> E-Bike conversion – mechanical transmission

A onedayproject to convert my bike to e-bike.

Well the one day was making the transmission and it was running 50km/h in the afternoon (in a private area) -the more careful design of battery packs and safety systems came later.

It is powered by around 40-50V running a BLDC motor of 290Kv and rated max 1800W. The transmission is gear ratio of around 1/11 (as I recall) -but still the motor runs too slow at low speed driving.

It very lightweight and cheap to build but you need a BLDC controller and I recommend the VESC designed by Benjamin Vedder.

I also recommend having brakes that are stronger than the motorsetup, so the fail happens to the mechanics – not the driver..

For additional details just ask or check out my Thingiverse post

Electric Boat Motor

My diesel motor broke down, so I designed and installed  an electric motor drive.

Great about this project is the way I used different prototyping techniques to fab the timing pullys, and the alu frame.

And even more great is that compared to the diesel engine which had 4 separate liquid systems and electric system – this has just one electric system, and it doesn’t pollute or require any maintenance.

It charges on solar panels 20V boosted up to 60V for the 4x12v batteries (series) that provide the electric power. -I have even been sailing on sun alone 😉

V.1 10kW BLDC 150KV 45-52V 86Ah direct drive – not working 🙂

V.2 10kW BLDCmotor 150KV 45-52V 86Ah timing belt over cast pullys. Worked ok but at low rpm for the motor, causing high current draw.

V.2 25kW BLDC motor 50KV 45-52V 86Ah same timing belt setup, this works perfect from 150 w just driving the boat in harbour without current or strong wind up to approx 2000W in canals etc.

If you are interested in more details, just ask.

I will try to get some shots from the current installation.. to show the pulley setup.

 

Mixed Substrate Computation – Sensor Based Artificial Cognition for Architectural Design and Modification

My PhD-thesis is published and pressed as book of 288 pages. Find the full text here

Abstract

A mutual relationship exists between activities and their physical environment. Change of circumstances in the built environment cause change of activities, and vice versa, change of activities cause changes of physical environment. How does information originating from activities influence the environment? And how does the environment provide relevant information for activities to take place?

Digital and material computation has — within architectural design — been used extensively to strengthen the capacity to build novel and more geometrically enhanced structures. However on large and small physical as well as long and short temporal scale there is only poor understanding the activities and phenomena taking place in the built environment. In particular, a lack in understanding of the relationships between changes in physical conditions and changes of activities. The rationale behind implementations and modifications of the built environment is constituted by many actants simultaneously at play, mainly based on human heuristics, sensemaking and semantics.

Digital computation can be combined with material, morphological and other types of computation to create models of the past, current and future scenarios. Here this concept is coined !Mixed !Substrate !Computation and relies heavily on successful !embodiment and !embodied !computation.

A technology is needed for tracing, extracting and computing both embodied memory and data from activities residing in the environment on different spatial and temporal scales.

This thesis presents a set of methods that combine sensors and algorithms to a novel technique of perceiving activities and phenomena over time.. Consequently, a kind of artificial cognition is demonstrated able to detect recurrent phenomena and in turn perform predictions in seemingly chaotic situations.

This discovery can bring about a paradigm shift in design, taking us from our current situation where architects, designers and planners predict and design for future needs using their present day point-of-view, to a situation where design tools are able to learn from complex situations and can predict future needs autonomously.

This capacity for perception and prediction contributes to the current discourse on mixed material and digital practices within architectural design — filling an increasingly widening gap between material and formal computation: the concept of embodiment. The idea of integrating body and soul—or the physical and the abstract—is a concept which is key for understanding the relationships between phenomena and matter.

Find the full text here

direct download link

Material and Detail 2015

The Master course Material and Detail was led by Daniel Norell, Jonas Lundberg, Kengo Skorick, HsengTai JaReng Lintner, Stefan Lintner and Stig Anton Nielsen. 28 master students were asked to propose a refugee shelter to be placed in the Zataari camp in Jordanien. Expanded polystyrene was the outset for exploring possible composite materials, and the winning concept focus on minimum material use. A secondary winner project was chosen for its multiple innovative solutions in joinery, composite thinking and fabrication techniques.

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Students in Material and Detail 2015

Reem Alkaisy,
Beatrice Calini,
Johanna Mija Dahlberg,
Klara Dahlin,
Carl Darenlind,
Alexandra Duhamel,
Samuel Eliasson,
Joyce Fisscher,
Emma Holmin,
Andrine Johansson,
Hjalmar Kaudern,
Nessim Kaufmann,
Jens Ljunggren,
Martin Löfqvist,
Emma Magnusson,
Regina Makhmutova,
Maximiliano MartĂ­n Parra,
Jakob MĂŒller,
Niklas Nordström,
Gustav Nyman,
Viktoriya Oleksyuk,
Luke Partyka,
Ellen Pleil,
Adrien Quennepoix,
Margot Scheyving,
Theodor Tsesmatzoglou,
Marie Lou Valdes,
Theresia VĂ€ngborg Nyberg,
Anna ÅdĂ©n,

2015 Material Actuation – Addition Modification and Subtraction

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2015 Material Actuation, was part of introduction to the course Material and Detail at Chalmers University of Technology. During two weeks student teams investigated three modes of material actuation. Addition, four students constructed and tested an EPS extruder. Modification, four students constructed and tested a CNC metal-plate bender. Subtraction, four students constructed and tested a large scale CNC hotwire cutting system, able to cut EPS foam blocks up to 1200x1200x600mm. All projects made use of a large scale robotic arm. back

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The MAKE:lab at Chalmers

20141108_Make02AMaterial Actuation and Kinetic Experimentation Laboratory at Chalmers was founded by Stig Anton Nielsen in September 2015 as a consequence of both the donation of a large industry robotic arm, and the funding for quality in education at Chalmers. The laboratory will provide the students and researchers with the opportunity to develop ideas on more advanced material explorations, based on actuator systems and sensor systems. So far one intense workshop has taken place during two weeks of October 2015.

Ossa Waw – Mapping Urban Phenomena

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Ossa Waw 2011, a convention for architecture students from Poland and other European countries. Our workshop called Mapping Urban Phenomena sought to design and construct active ‘synapses’ for the urban environment. Image to the left is the project ‘Grass’ which communicates local information about temperature (color) and wind conditions (flex) through this simple material and sensor activated installation. The prototype was supposed to be placed numerous places in the urban environment, allowing for occupants to stay informed of other local climatic conditions. Other projects like The Scent of Location would through the phenomena Scent Memory, give occupants of the space an experience of dislocation through the use of scent.

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