Wireless LCD

_X7JAY7X_ · Post by **_X7JAY7X_** » December 18th, 2005, 6:54 am

I was messing around today with some wireless modules I had and decided to adapt them to my LCD project.

Post by **limbo** » December 18th, 2005, 12:09 pm

Jees Jay

You're the hardware Guru !

What about the transmit part?
Are you going to publish this on you site?

_X7JAY7X_ · Post by **_X7JAY7X_** » December 18th, 2005, 5:16 pm

Eventually. It is working fine but I would like to test it more.

Right now it is running at 2400bps. This radio I am using is a 433Mhz radio and is cabaple of 4800bps. The 900MHZ radios available go alot higher than that.

Even at 2400bps it runs just fine.

J

Rafael_Brazil · Post by **Rafael_Brazil** » December 19th, 2005, 12:49 pm

Please, can you make a simple description about this circuit? the transmitter and receiver... thanks!

_X7JAY7X_ · Post by **_X7JAY7X_** » December 21st, 2005, 7:31 pm

I will when I get a chance. This could be adapted to any serial LCD using the same concept. Although, it might take a few more parts to do the RS232 to TTL conversion on the LCD side.

I got it working at 4800bps and is running stable.

J

Rafael_Brazil · Post by **Rafael_Brazil** » December 21st, 2005, 7:49 pm

or tell us what components that you are using... it?s a MC145026 encoder and a MC145028 decoder? directly in a 433Mhz transmitter data input and output, isn?t?

Rafael_Brazil · Post by **Rafael_Brazil** » December 21st, 2005, 7:54 pm

Here I found a simple example of a conversion to serial output and input... In my opinion, it?s just plug the 026 pin 15 in input of a 433Mhz transmitter and in the 028 pin 09 plug the output of a 433Mhz receiver...

But I cannot found a simple and cheap tx/rx version of this transmiters...[/img]

_X7JAY7X_ · Post by **_X7JAY7X_** » December 22nd, 2005, 9:39 pm

Right now it has no encoder/decoder. It is just feeding the LINX (TXM-433-LC, RXM-433-LC-S) transmitter and reciever. At the time I bought these LINX did not offer a encoder/decoder option, but they do now(see the KH series). You can "key" the transmitter to the reciever with the new ones. This is done by setting an address on the TX and RX.

J

Rafael_Brazil · Post by **Rafael_Brazil** » December 23rd, 2005, 2:26 pm

http://www.linxtechnologies.com/index.p ... =kh_series

It?s better... onboard encoder/decoder!! It?s necessary send a key code to receiver? in my opinion... it?s just use the ant pin, vcc pin, ground pin and d0-d7 pins...

But the problem for me is that I can?t find it here in Brazil...

Thanks!!!

Rafael_Brazil · Post by **Rafael_Brazil** » January 15th, 2006, 2:06 am

I got a mc145026 and mc145027... they have a 4-bit support and. lcdsmartie just works with 8-bits and some logical pins!

Is there some solution to get a 4x40 lcd in wireless mode using these IC?

_X7JAY7X_ · Post by **_X7JAY7X_** » January 16th, 2006, 12:36 am

I dont see how unless you have a microcontroller or something comparable to encode the data on the transmitter end and a micro on the receiving end to control the LCD.

J

Rafael_Brazil · Post by **Rafael_Brazil** » January 16th, 2006, 11:52 am

I think just with a PIC16F628... But, we need to know hard of assembly...

LCD Smartie

Wireless LCD

Wireless LCD

The KH Series...