https://github.com/mattvenn/extracticon
https://github.com/mattvenn/extracticon
Last synced: 9 months ago
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- Host: GitHub
- URL: https://github.com/mattvenn/extracticon
- Owner: mattvenn
- Created: 2015-06-05T16:38:15.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2015-08-07T20:19:29.000Z (over 10 years ago)
- Last Synced: 2025-04-01T18:09:56.523Z (9 months ago)
- Language: Arduino
- Size: 2.67 MB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# Extracticon!
* Turns on your extraction automatically when you use an attached tool,
* Cheap to build,
* 1 sided PCB easy to home fab,
* Rated at 1.8KW Max,
* Thermal cutout.
# Photos
[More pics](photos/)
# Electronics
# Electronics BOM
[BOM](bom.txt)
* Parts missing from the BOM are standard resistors and LEDs.
* Ensure caps are at least 6V, preferable 12V.
# Case
* [Case BOM & Build notes](build_notes.md)
* [DXF for laser cutting](case.dxf)
# Code
[Arduino code for ATTiny45](extracticon_tiny/)
# Testing
* Circuit board is rated for 1.8KW Max.
* Current capacity can be increased by adding solder to the traces.
* We tested 2KW for 30 minutes.
This thermal picture shows maximum of 50C so internal thermal cutout set to 60C.
# References
* [This calculator](http://circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calculator/) was used to calculate that with 5mm traces we can switch 7.7A or 1.8KW at 240VAC.
* [current sensing](http://openenergymonitor.org/emon/buildingblocks/ct-sensors-interface)
* [using tiny44/45 with arduino](http://highlowtech.org/?p=1695)
# License
This hardware is licensed under the [CERN open hardware license 1.2](http://www.ohwr.org/attachments/2388/cern_ohl_v_1_2.txt), which also included in this repository.