[Coco] A little off topic

[Dave Philipsen]

Depends on the type of RFID.  Some types with active transmitters are 
good to 200 meters.

Dave


On 5/17/2017 7:56 AM, William Mikrut wrote:
> The only issue I have with rfid is that it's very close range...only a few
> inches at most.
>
> Second, I don't know very much about rfid circuitry.
>
> On May 17, 2017 12:06 AM, "Scott Wendt" <malfunct at msn.com> wrote:
>
>> RFID might be the way to go for this, there are some RFID detectors with a
>> range of a handful of feet.
>>
>>
>> The idea would be put the RFID tag on one animal and the RFID scanner on
>> the other animal set to beep when it detected the tag.
>>
>> ________________________________
>> From: Coco <coco-bounces at maltedmedia.com> on behalf of William Mikrut <
>> wmikrut72 at gmail.com>
>> Sent: Tuesday, May 16, 2017 9:10:59 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] A little off topic
>>
>> We were thinking about a foot or two.
>> Any closer and the cat is on its way to being a dog snack.
>>
>> Mind you... we won't be actually placing these on animals... (although my
>> daughter will want to).
>>
>> I Was likely going to put both units in a small project box and move the
>> boxes close to each other to initiate the beeping.
>>
>> On May 16, 2017 10:23 PM, "Salvador Garcia via Coco" <coco at maltedmedia.com
>> wrote:
>>
>>> A possible problem that I see is that even without an antenna, the comm
>>> range could be 10 feet or more. Also since both components will be
>>> "mounted" on the tabby and canine, the orientation on the devices will be
>>> constantly changing and in some cases, the orientation of the device
>>> affects the range.
>>>
>>> The first question I would ask is how close do you want the two devices
>> to
>>> be for the trigger to go off?
>>>
>>> Salvador
>>>
>>>        From: William Mikrut <wmikrut72 at gmail.com>
>>>   To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>>>   Sent: Tuesday, May 16, 2017 8:40 PM
>>>   Subject: Re: [Coco] A little off topic
>>>
>>> Ok, so keep in mind this is for a 5th grade project... and will get my
>>> daughter into working with components... that's the main point of the
>>> project!
>>>
>>> She came up with an idea --- to try and keep the dog and cat away from
>> each
>>> other, build a device that beeps when they're close.
>>> So, I went to work thinking up how to do this and tried to keep it as
>>> simple as possible.
>>>
>>> I was going to start with an RF Transmitter & Receiver for use with
>> Arduino
>>> DIY Projects:
>>> ( I am not embedding links here because I am not advertising anyone site
>> )
>>> I figure without an external antenna -- maybe the transmitter/receiver
>> can
>>> be a couple feet away and function... any further and the link is broken.
>>> I planned to attach a 555 timer pulse to the transmitter data pin and
>> keep
>>> sending a pulse all the time.
>>>
>>> On the receiver have a transistor (or such)  hooked up to the data pin.
>>> When data is received, it receives the 555 pulse, and in the transistor
>>> circuit have a small piezoelectric speaker that sounds out the 555 pulse
>>> from the transmitter.
>>>
>>> Volia -- close proximity -- loud pulse from the small speaker.
>>>
>>> Epic failure -- or plausible project we can build?
>>> Thank you!
>>>
>>>
>>>
>>> On Tue, May 16, 2017 at 6:46 PM, Camillus Blockx <
>> camillus.b.58 at gmail.com>
>>> wrote:
>>>
>>>> Let's hear it..
>>>> Cb
>>>>
>>>>
>>>> On May 16, 2017 5:27 PM, "William Mikrut" <wmikrut72 at gmail.com> wrote:
>>>>
>>>>> I have a question... and there are hardware gurus out there (you know
>>> who
>>>>> you are).
>>>>> And I was hoping I could ask for a little time from someone to lend
>>> some
>>>>> offline expertise to me.
>>>>>
>>>>> I have a child who wants to build an electronics project for school.
>>>>> I attended ITT --- but it was so long ago, I am extremely rusty as
>>>> designs.
>>>>> I have the basic idea and parts list -- and before I start purchasing
>>> and
>>>>> assembling ( and quite possibly letting a lot of magic smoke escape
>> ),
>>> I
>>>>> was hoping I could run the idea passed someone and ask if what we are
>>>>> trying to accomplish is as simple as I see it.
>>>>>
>>>>> It's a small project and will require no more than a handful of
>> parts.
>>>>> Thank you!
>>>>>
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>>>>>
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