Difference between revisions of "Ljusa hack"
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| − | For the research "Design & Energy Harvesting" we looked charging device which was appropriate to hack and redesign, employ in other projects.<BR> | + | For the research "Design & Energy Harvesting" we looked for a charging device which was appropriate to hack and redesign, employ in other projects.<BR> |
Constraints:<BR> | Constraints:<BR> | ||
*cheap | *cheap | ||
| Line 7: | Line 7: | ||
*generating sufficient energy for small projects | *generating sufficient energy for small projects | ||
<BR> | <BR> | ||
| − | First we looked into a very cheap dynamo light torch which could be bought at ACTION for 1 euro. This device is very interesting because it uses different energy transformaton. The downside was that the generated energy was too low for powering up an ATtiny85 for some time.<BR> | + | ==Dynamo Light Torch of 1 euro== |
| + | First we looked into a very cheap dynamo light torch which could be bought at ACTION for 1 euro. This device is very interesting because it uses different energy transformaton. The downside was that the generated energy was too low for powering up an ATtiny85 for some time. [https://www.flickr.com/photos/contrechoc/sets/72157649053235806 Pictures of all the parts of this Dynamo Light Torch] <BR>[[File:DynamoLightTorch.jpg|300px]]<BR> | ||
<BR> | <BR> | ||
| − | + | ==USB Hand Emergency Crank== | |
| + | Secondly USB hand crank chargers were investigated. These devices generate sufficient energy, the price is low, but, there is no way of storing the energy (you could add a supercap). And these are really "emergency" chargers, because if you use them for a bit longer, they start to desintegrate. [https://www.flickr.com/photos/contrechoc/sets/72157649734548187 Pictures of the hand crank chargers]<BR> | ||
| + | [[File:Hand crank.png|300px ]]<BR> | ||
| + | <BR><BR> | ||
| + | ==Expensive chargers== | ||
| + | Thirdly some more expensive devices were tried:<BR> | ||
| + | A solar charger, 15 euro's<BR> | ||
| + | A Sony hand crank charger<BR> | ||
| + | A Conrad solar and dynamo charger combined.<BR> | ||
| + | These devices work better, really have power for longer time, but are expensive and complicated to hack. These may be only useful for bigger projects.<BR> | ||
| + | <BR> | ||
| + | ==Ljusa == | ||
| + | After these comparisons the Ljusa of IKEA came out on top. It is a device which fits all the constraints.<BR> | ||
[[File:Ljusa01.jpg|300px]] | [[File:Ljusa01.jpg|300px]] | ||
<BR> | <BR> | ||
| Line 15: | Line 28: | ||
[http://www.instructables.com/id/Hack-Ikea-Ljusa-Crank-LED-Flashlight-into-an-Emerg/?lang=es Ljusa Hack 1]<BR> | [http://www.instructables.com/id/Hack-Ikea-Ljusa-Crank-LED-Flashlight-into-an-Emerg/?lang=es Ljusa Hack 1]<BR> | ||
[http://tinkering.exploratorium.edu/2014/06/23/hand-crank-generator-ikea-hack Ljusa hack 2]<BR> | [http://tinkering.exploratorium.edu/2014/06/23/hand-crank-generator-ikea-hack Ljusa hack 2]<BR> | ||
| − | + | ||
It is very easy to hack the Ljusa, the price is 4 euro's.<BR> | It is very easy to hack the Ljusa, the price is 4 euro's.<BR> | ||
| − | + | ||
After hacking it a way was found to reassemble the vital parts and integrating it into a test setup.<BR> | After hacking it a way was found to reassemble the vital parts and integrating it into a test setup.<BR> | ||
<BR> | <BR> | ||
| Line 27: | Line 40: | ||
*90 seconds of power from three LED's | *90 seconds of power from three LED's | ||
<BR> | <BR> | ||
| + | ==Ljusa lasercut kit== | ||
'''DOWNLOADS:''' | '''DOWNLOADS:''' | ||
Illustrator files, which can be used to lasercut perspex for reassembling the vital energy generating parts:<BR> | Illustrator files, which can be used to lasercut perspex for reassembling the vital energy generating parts:<BR> | ||
[http://contrech.home.xs4all.nl/research/ljusa_hack.ai download].<BR> | [http://contrech.home.xs4all.nl/research/ljusa_hack.ai download].<BR> | ||
These parts make a box for the dynamo and the hand crank. The electronics could be fitted in a similar box, or otherwise, see the setups below.<BR> | These parts make a box for the dynamo and the hand crank. The electronics could be fitted in a similar box, or otherwise, see the setups below.<BR> | ||
| − | [[File:Parts.png|300px]] | + | [[File:Parts.png|300px]]<BR> |
| − | The lever, 3d printed, with the 6 sided, stl file: [http://contrech.home.xs4all.nl/research/arm_Ljusa_long.stl download] | + | The lever, 3d printed, with the 6 sided, stl file: [http://contrech.home.xs4all.nl/research/arm_Ljusa_long.stl download]<BR> |
| − | [[File:Ljusa5.jpg|300px]] | + | [[File:Ljusa5.jpg|300px]]<BR> |
| − | |||
<BR> | <BR> | ||
Later on for a specific game the existing supercap of 1F was replaced with a supercap of 10F. This enlarges the amount of energy which can be stored.<BR> | Later on for a specific game the existing supercap of 1F was replaced with a supercap of 10F. This enlarges the amount of energy which can be stored.<BR> | ||
| Line 51: | Line 64: | ||
Setup 2:<BR> | Setup 2:<BR> | ||
Parts which can be attached to garments.<BR> | Parts which can be attached to garments.<BR> | ||
| + | |||
| + | Setup 3:<BR> | ||
Revision as of 11:28, 19 June 2015
For the research "Design & Energy Harvesting" we looked for a charging device which was appropriate to hack and redesign, employ in other projects.
Constraints:
- cheap
- easy to hack
- easy to understand
- reusable parts
- generating sufficient energy for small projects
Dynamo Light Torch of 1 euro
First we looked into a very cheap dynamo light torch which could be bought at ACTION for 1 euro. This device is very interesting because it uses different energy transformaton. The downside was that the generated energy was too low for powering up an ATtiny85 for some time. Pictures of all the parts of this Dynamo Light Torch 
USB Hand Emergency Crank
Secondly USB hand crank chargers were investigated. These devices generate sufficient energy, the price is low, but, there is no way of storing the energy (you could add a supercap). And these are really "emergency" chargers, because if you use them for a bit longer, they start to desintegrate. Pictures of the hand crank chargers
Expensive chargers
Thirdly some more expensive devices were tried:
A solar charger, 15 euro's
A Sony hand crank charger
A Conrad solar and dynamo charger combined.
These devices work better, really have power for longer time, but are expensive and complicated to hack. These may be only useful for bigger projects.
Ljusa
After these comparisons the Ljusa of IKEA came out on top. It is a device which fits all the constraints.
Some people already hacked it and reported about it:
Ljusa Hack 1
Ljusa hack 2
It is very easy to hack the Ljusa, the price is 4 euro's.
After hacking it a way was found to reassemble the vital parts and integrating it into a test setup.
Parts:
- Dynamo
- Supercap for storing energy
- push button, switch on/off
- 90 seconds of power from three LED's
Ljusa lasercut kit
DOWNLOADS:
Illustrator files, which can be used to lasercut perspex for reassembling the vital energy generating parts:
download.
These parts make a box for the dynamo and the hand crank. The electronics could be fitted in a similar box, or otherwise, see the setups below.
The lever, 3d printed, with the 6 sided, stl file: download
Later on for a specific game the existing supercap of 1F was replaced with a supercap of 10F. This enlarges the amount of energy which can be stored.
Setup 1:
Wearable: Victory over the Sun
Picture of Functional electronic parts:
dynamo charger, supercaps/lipo, the brains: 2 ATtiny85’s and bitshifters, and an LTC3105 energy harvesting chip
The goal of this wearable is playing a game of two types of energy, comparing the two results and experiencing generating energy yourself, while the sun is also generating comparable energy.
These for boxes were more or less integrated into a wearable.
The wearable was chosen because this setup can be carried in a natural way to different locations.
Setup 2:
Parts which can be attached to garments.
Setup 3: