Niftymitter v0.1
by royshearer, published
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Description
Niftymitter is an open source short range FM transmitter based on the open source hardware design by Tetsuo Kogawa.
Version 0.1 is designed to be housed within a 3mm acrylic or bamboo body, with a variety of options for hacking. The transmitter is tiny and handy for small scale radio broadcasts, building a distributed PA system for performances, linking your personal audio player to your car radio, or for general audio experimentation.
I am currently working on v0.21 which is a bit of a radical redesign, so v0.1 is posted for completeness.
ISSUES in v0.1:
- too bulky
- acrylic prone to failure at corners
- cable tie construction troublesome - not very secure, ends tend to catch on things.
The project's home is at openthing.org/products/niftymitter
Version 0.1 is designed to be housed within a 3mm acrylic or bamboo body, with a variety of options for hacking. The transmitter is tiny and handy for small scale radio broadcasts, building a distributed PA system for performances, linking your personal audio player to your car radio, or for general audio experimentation.
I am currently working on v0.21 which is a bit of a radical redesign, so v0.1 is posted for completeness.
ISSUES in v0.1:
- too bulky
- acrylic prone to failure at corners
- cable tie construction troublesome - not very secure, ends tend to catch on things.
The project's home is at openthing.org/products/niftymitter
Recent Comments
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I don't think Kogawa's design would meet FCC regs as is, probably being slightly more powerful than the 50nW most regs centre around. Would be interested to find out for sure though.
Wikipedia has some useful info on European legalities:
http://en.wikipedia.org/wiki/F...
Great! love it!
Is this up to fcc regs?
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License
Niftymitter v0.1 by royshearer is licensed under the Creative Commons - Attribution - Share Alike license.
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Instructions
As this is now a deprecated design, I am working on more complete instructions for v0.21. The main thing you need to know if you want to make this version is that the electronics are described on Tetsuo Kogawa's site here:
anarchy.translocal.jp/radio/micro/howtosimplestTX.html
And I used this switch from Rapid (UK supplier):
rapidonline.com/productinfo.aspx?tier1URL=Electronic-Components&tier2URL=Switches&tier3URL=Push-Button-Switches&tier4URL=Miniature-SPST-LED-latching-push-switch&moduleno=71429&kw=78-0188
This thing is so wee, it makes more sense to cut two at a time, so the file contains parts for two.
anarchy.translocal.jp/radio/micro/howtosimplestTX.html
And I used this switch from Rapid (UK supplier):
rapidonline.com/productinfo.aspx?tier1URL=Electronic-Components&tier2URL=Switches&tier3URL=Push-Button-Switches&tier4URL=Miniature-SPST-LED-latching-push-switch&moduleno=71429&kw=78-0188
This thing is so wee, it makes more sense to cut two at a time, so the file contains parts for two.
Niftymitter v0.1 by royshearer is licensed under the Creative Commons - Attribution - Share Alike license.
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(26 kb zip file)
I don't think Kogawa's design would meet FCC regs as is, probably being slightly more powerful than the 50nW most regs centre around. Would be interested to find out for sure though.
Wikipedia has some useful info on European legalities:
http://en.wikipedia.org/wiki/F...