rpi屌炸天的玩法

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liyaoshi

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Apr 16, 2014, 11:13:33 PM4/16/14
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Jactry Zeng

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Apr 16, 2014, 11:22:44 PM4/16/14
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做过,实际平面覆盖半径 8 米左右。
近距离内覆盖同频段的本地电台妥妥的。


2014-04-17 11:13 GMT+08:00 liyaoshi <liya...@gmail.com>:

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"宋为@凉拌茶叶"

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Apr 17, 2014, 1:07:43 AM4/17/14
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不插线,3米不到就没信号了

liyaoshi

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Apr 17, 2014, 1:57:28 AM4/17/14
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信号不是问题,你插个1.5m 的天线看看 关键是做这个模块的想法

太屌了 !!!


在 2014年4月17日 下午1:07,"宋为@凉拌茶叶" <leo_s...@126.com>写道:
不插线,3米不到就没信号了

于 2014年04月17日 11:22, Jactry Zeng 写道:
做过,实际平面覆盖半径 8 米左右。
近距离内覆盖同频段的本地电台妥妥的。


2014-04-17 11:13 GMT+08:00 liyaoshi <liya...@gmail.com>:

http://makezine.com/projects/make-38-cameras-and-av/raspberry-pirate-radio/

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none_nobody

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Apr 17, 2014, 3:21:54 AM4/17/14
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额,好像pi发射有了。pi能接收FM信号么? 如果可以那不是可以组低速的FM网了?

On Thursday, April 17, 2014 11:13:33 AM UTC+8, liyaoshi wrote:

juju

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Apr 17, 2014, 3:34:23 AM4/17/14
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怎么有变成DSP的节奏啊
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杨毅涛

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Apr 17, 2014, 3:41:17 AM4/17/14
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没有觉得有多“屌炸天”。呵呵,鉴定完毕。
弄一个无线麦克,接到随便一个播放设备上(包括磁带播放器)。就类似这么一个东西。
除了故事很好玩。

liyaoshi

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Apr 17, 2014, 4:23:22 AM4/17/14
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你看看人家怎么实现的先

pwm + dma 

无线麦克能随意改变频率么?关键是造价!
 

liyaoshi

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Apr 17, 2014, 4:24:29 AM4/17/14
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我看了半天,发现iMX系,实现不了

liyaoshi

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Apr 17, 2014, 4:28:09 AM4/17/14
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无线麦克,你怎么加RDS信息?
这玩意能加


在 2014年4月17日 下午4:23,liyaoshi <liya...@gmail.com>写道:

liyaoshi

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Apr 17, 2014, 4:29:18 AM4/17/14
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自己改改
完全可以 相当于售价300k的苏伯伦信号发生器

Ben Luo

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Apr 17, 2014, 5:23:26 AM4/17/14
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你们这些玩底层的人太牛了

"宋为@凉拌茶叶"

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Apr 17, 2014, 5:43:19 AM4/17/14
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乱用FM频道会不会导致家里的水表坏掉?

于 2014年04月17日 13:57, liyaoshi 写道:
> 信号不是问题,你插个1.5m 的天线看看 关键是做这个模块的想法
>
> 太屌了 !!!
>
>
> 在 2014年4月17日 下午1:07,"宋为@凉拌茶叶" <leo_s...@126.com>写道:
>
>> 不插线,3米不到就没信号了
>>
>> 于 2014年04月17日 11:22, Jactry Zeng 写道:
>>
>> 做过,实际平面覆盖半径 8 米左右。
>>> 近距离内覆盖同频段的本地电台妥妥的。
>>>
>>>
>>> 2014-04-17 11:13 GMT+08:00 liyaoshi <liya...@gmail.com>:
>>>
>>> http://makezine.com/projects/make-38-cameras-and-av/
>>>> raspberry-pirate-radio/
>>>>
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>>>> Groups Shanghai Linux User Group group. To post to this group, send email
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>>>> shlug+un...@googlegroups.com. For more options, visit this group
>>>> at
>>>> https://groups.google.com/d/forum/shlug?hl=zh-CN
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>>>>
>>>
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none_nobody

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Apr 17, 2014, 6:30:44 AM4/17/14
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不会啊,某安事情太多,维恩是第一要务,你这种不跟国外敌对势力发生联系的,懒得理。

liyaoshi

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Apr 17, 2014, 7:59:19 AM4/17/14
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... 我其实是曲线救国的, 做死一家外企,我就多给国家做份贡献了
妈蛋


qing xianhao

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Apr 17, 2014, 8:33:00 AM4/17/14
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Thu, 17 Apr 2014 19:59:19 +0800 liyaoshi <liya...@gmail.com> wrote:
> ... 我其实是曲线救国的, 做死一家外企,我就多给国家做份贡献了
> 妈蛋
>
>
> 在 2014年4月17日 下午6:30,none_nobody <lyx...@gmail.com>写道:
>
> > 不会啊,某安事情太多,维恩是第一要务,你这种不跟国外敌对势力发生联系的,懒得理。
> >
> >
> > On Thursday, April 17, 2014 5:43:19 PM UTC+8, 凉拌茶叶 wrote:
> >>
> >> 乱用FM频道会不会导致家里的水表坏掉?
功率问题只在十米左右,如果你覆盖到城际级别就真的要查你了应该。

> >>
> >> 于 2014年04月17日 13:57, liyaoshi 写道:
> >> > 信号不是问题,你插个1.5m 的天线看看 关键是做这个模块的想法
> >>
单看功能:
我能说 X 宝上 FM 发射器 20内?带 3.5mm 音频输入(还带满席和时间显示),
还带车载充电器
回头一看 rpi 250+ 然后我就呵呵了。

不过实现这一功能的软件代码有看着的说,理论上真可以和楼上某哥哥说的那。
再搞个 10 块内的收音机模块,就可以实现 fm 网络了。。。

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liyaoshi

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Apr 17, 2014, 10:22:30 AM4/17/14
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Chaos Eternal

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Apr 17, 2014, 11:36:47 AM4/17/14
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这活叫software defined radio

Yang Fan

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Apr 17, 2014, 10:20:21 PM4/17/14
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覆盖面积太小了,不实用。


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liyaoshi

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Apr 17, 2014, 10:39:41 PM4/17/14
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测试车载收音机的时候很实用
车上面可以啥多没有,唯独不能没有FM/AM收音机

none_nobody

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Apr 18, 2014, 5:16:59 AM4/18/14
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首先得有轮子。

On Friday, April 18, 2014 10:39:41 AM UTC+8, liyaoshi wrote:
测试车载收音机的时候很实用
车上面可以啥多没有,唯独不能没有FM/AM收音机


杨毅涛

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Apr 18, 2014, 12:50:40 PM4/18/14
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知道那个技术很炫。咱是实用派。喜欢简单实用的东西。这个东西不够简单实用。
还不如电视卡SDR好玩。之前弄了个。什么FM/AM,飞机频道,手机频道,飞机导航频道……等等都可以收到。
才50来块RMB,连上电脑,装上相应的解码插件就可以了。硬件小改一下,还可以收短波。大改一下。可以在这些频道里面发射。


Chaos Eternal

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Apr 25, 2014, 5:46:41 AM4/25/14
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怎么大改啊?接个功放?

juju

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Apr 25, 2014, 5:59:34 AM4/25/14
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同问,现在能收不能发

none_nobody

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Apr 25, 2014, 9:32:39 PM4/25/14
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其他都还好,唯有这句,要让我笑喷了。


大改一下。可以在这些频道里面发射。


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