Device needed for: Text Display + Wireless Communication + Remote control + Remote Power ?

On 5/20/2015 8:03 PM, Skybuck Flying wrote:
Hmm I have doubts about this... perhaps these devices would be stolen,
pretty quickly...

Idea might thave to go into the waste basket...

Not my idea anyway.

Bye,
Skybuck.

The theft part wouldn't be too hard to deal with. Use a protocol over
the wireless link that verifies the serial number without broadcasting
it. Then the displays can't be used by anyone else.

If you can't find something like this it would not be hard to build.
The only real issues I see are the battery life (just need a large
enough battery, but charge time might be an issue) and the number of
devices controlled from one interface. I think Bluetooth has a limit of
some 8 or so. However, since you don't need constant connections to the
slaves, but rather only when you wish to download text to them, I think
you can easily get around that limitation.

So figure out what size characters you want to use and pick an LED part
to suit. Virtually any MCU will do the job of interfacing to the
Bluetooth interface, the LEDs and managing the protocol. This should be
a fairly simple project. You can get the HC-05 Bluetooth module for $5
or less. I expect you can figure out how to charge an internal battery.
But then if you have to plug in the devices to charge, why not plug
them in to program as well? Oh yeah, you didn't say what range you
wanted on the wireless connection.

--

Rick

On 21/5/2015 3:05 AM, Skybuck Flying wrote:
Hello,

The following are the requirements for a piece or pieces of hardwa

A device which can stand on a table:

1. Dimensions: Approximately 20 centimeters width, 3 centimeters heigh,
2 or 3 centimeters thick.

2. The device should be capable of display text, about 20 to 30
characters. (Probably led display)

3. The text should be remotely controlled by for example a PC.

4. The device should have a network chip.

5. The device should be uniquely identified because multiple of these
devices are necessary.

6. Each device should be remotedly controlled by the same PC and it
should be possible to send different text to each device.

7. The device should be able to work for at least 20 hours straight on
for example battery power or other form of mobile power storage/accu.

8. The battery/accu should be replaceable and possibly chargeable,
should charge rapidly within 4 hours.

9. Some kind of second device/pci express card (?) is needed for the PC,
perhaps wifi, blue tooth or something else to controll all of these
table devices, perhaps 20, perhaps 30, something like that.

10. The device should look good/polished... no loose wires, it should
have a nice black package around it or perhaps other color... something
that looks decent/finished.

Recommendations ?

Bye,
Skybuck.











How about a phone or tablet ? Fits most of your requirements, apart
possibly from form factor. There are a zillion to choose from.

--
Regards,

Adrian Jansen adrianjansen at internode dot on dot net
Note reply address is invalid, convert address above to machine form.

On 21-May-15 1:05 AM, Skybuck Flying wrote:
Hello,

The following are the requirements for a piece or pieces of hardwa

A device which can stand on a table:

1. Dimensions: Approximately 20 centimeters width, 3 centimeters heigh,
2 or 3 centimeters thick.

2. The device should be capable of display text, about 20 to 30
characters. (Probably led display)

3. The text should be remotely controlled by for example a PC.

4. The device should have a network chip.

5. The device should be uniquely identified because multiple of these
devices are necessary.

6. Each device should be remotedly controlled by the same PC and it
should be possible to send different text to each device.

7. The device should be able to work for at least 20 hours straight on
for example battery power or other form of mobile power storage/accu.

8. The battery/accu should be replaceable and possibly chargeable,
should charge rapidly within 4 hours.

9. Some kind of second device/pci express card (?) is needed for the PC,
perhaps wifi, blue tooth or something else to controll all of these
table devices, perhaps 20, perhaps 30, something like that.

10. The device should look good/polished... no loose wires, it should
have a nice black package around it or perhaps other color... something
that looks decent/finished.

Recommendations ?

Bye,
Skybuck.


Perhaps you could re-engineer one of these to make it smaller.

On 21-May-15 1:05 AM, Skybuck Flying wrote:
Hello,

The following are the requirements for a piece or pieces of hardwa

A device which can stand on a table:

1. Dimensions: Approximately 20 centimeters width, 3 centimeters heigh,
2 or 3 centimeters thick.

2. The device should be capable of display text, about 20 to 30
characters. (Probably led display)

3. The text should be remotely controlled by for example a PC.

4. The device should have a network chip.

5. The device should be uniquely identified because multiple of these
devices are necessary.

6. Each device should be remotedly controlled by the same PC and it
should be possible to send different text to each device.

7. The device should be able to work for at least 20 hours straight on
for example battery power or other form of mobile power storage/accu.

8. The battery/accu should be replaceable and possibly chargeable,
should charge rapidly within 4 hours.

9. Some kind of second device/pci express card (?) is needed for the PC,
perhaps wifi, blue tooth or something else to controll all of these
table devices, perhaps 20, perhaps 30, something like that.

10. The device should look good/polished... no loose wires, it should
have a nice black package around it or perhaps other color... something
that looks decent/finished.

Recommendations ?

Bye,
Skybuck.





Perhaps you could re-engineer one of these to make it smaller.

http://www.digitalsignageperth.com.au/images/Home/vms_trailer_sign_5_colour.png

On 21/5/15 1:05 AM, Skybuck Flying wrote:
Hello,

The following are the requirements for a piece or pieces of hardwa

A device which can stand on a table:

1. Dimensions: Approximately 20 centimeters width, 3 centimeters heigh,
2 or 3 centimeters thick.

2. The device should be capable of display text, about 20 to 30
characters. (Probably led display)

3. The text should be remotely controlled by for example a PC.

Raspberry Pi with LED panels controlled via Pi's 40-pin GPIO ports?

Ok, apperently theft less of an issue... hmm...

Would have to re-order...

Bye,
Skybuck.