RoboSavvy Forum

LCD for RN1

2012-01-23T22:07:47+01:00

OK, problem solved.
I used the connector ERX instead of ETX.
thank you again.
Andy

Statistics: Posted by Landy — Mon Jan 23, 2012 10:07 pm

LCD for RN1

2012-01-23T00:48:02+01:00

I followed this discussion with great interest.
I bought the serial interface of SparkFun, serLCD.

http://www.sparkfun.com/products/258

I followed the advice of Gort's previous post.
I uploaded the new firmware via the Roboflash modified by the great I-Bot.
I reported the speed of the LCD from 4800 to 9600, connecting the wire on ERX and the following code:

Code:
'Change speed from 4800 to 9600
ETX 4800, & HFE
ETX 4800, & H01
ETX 4800, 52
ETX 4800, 56
ETX 4800, 48
ETX 4800, 48
ETX 4800, 45
ETX 4800, 62
ETX 4800, 124
ETX 4800, 13
10 DELAY
ETX 9600, 57
ETX 9600, 54
ETX 9600, 48
ETX 9600, 48

I power cycled the MRC.
I moved the wire ETX connector to the LCD connector, and loaded the test code:
'Test LCD at 4800
PRINT & HFE, & H01 'Clear LCD Screen
PRINT "Test LCD at 4800"

Unfortunately each time I always see strange characters.
I do not understand if I did the right sequence.

Then I saw that in the SparkFun site there is a firmware update:
http://dlnmh9ip6v2uc.cloudfront.net/datasheets/LCD/Monochrome/serlcd-v2_7_2line_10MHz.zip

You have news about it?
The firmware solves some known problems?

Thank you so much and sorry for my english.
Andy

Statistics: Posted by Landy — Mon Jan 23, 2012 12:48 am

LCD for RN1

2010-11-16T06:24:25+01:00

I've just been through this whole saga. I can confirm that the 4800 didn't "stick" on my Sparkfun serial LCD either. But I tried I-bot's firmware and it works a treat now, running at 9600.

Once again... THANKS I-BOT!

Statistics: Posted by ozfiddler — Tue Nov 16, 2010 6:24 am

lcd

2009-06-23T05:03:32+01:00

at least you got it to work.

Statistics: Posted by engineer — Tue Jun 23, 2009 5:03 am

LCD for RN1

2009-06-21T01:45:01+01:00

phpBB [media]

Statistics: Posted by Gort — Sun Jun 21, 2009 1:45 am

LCD for RN1

2009-06-20T23:32:13+01:00

I finally got my Sparkfun Serial LCD to work! I was able to meet and talk to I-Bot during Robogames and he was very helpful. It looks like the only way to get it to work is to reset your LCD port form 4800 baud to 9600 baud. To do this you need to upload I-Bot’s fixes to Robobasic 2.72. Below are the instructions that he sent me. I was able to upload I-Bot’s firmware fixes without any problems. I have also tested my Robonova and it is working without any issues.
It is here (I-Bot’s version of Robobasic 2.72):

http://robosavvy.com/Builders/i-Bot/c3024fi2c.zip

You will also need Roboflash which is here:
http://robosavvy.com/Builders/i-Bot/roboflash.zip to load the code.

If you ever want to go back to 2.5 use this code:
http://robosavvy.com/Builders/i-Bot/payload2.5.bin
Then you can use either Robobasic 2.5 or 2.72 (which will also update the firmware to 2.7 without my changes.

My firmware changes the LCD port speed and fixes the POKE command. It also has the faster I2C code. See examples here:
http://robosavvy.com/Builders/i-Bot/I2CC.zip
All you have to do is to download both the bootloader and the new firmware. Then start Roboflash and point it to I-Bot’s version of 2.72. Then click the download button. It is that easy.
Thanks, I-Bot

Statistics: Posted by Gort — Sat Jun 20, 2009 11:32 pm

LCD for RN1

2008-12-11T04:04:50+01:00

Here is a link to the one I have.

http://www.sparkfun.com/commerce/produc ... cts_id=461

I hope that this helps?

Statistics: Posted by Gort — Thu Dec 11, 2008 4:04 am

LCD for RN1

2008-12-14T12:16:10+01:00

Hi, again

I will appreciate any help.

Statistics: Posted by hassawfaa — Thu Dec 11, 2008 12:14 am

LCD for RN1

2008-12-09T13:53:24+01:00

Hi, Guys

For Serial LCD (Sparkfun) I saw at the picture for version 2.5 that inside it 16F88 on the other hand with the datasheet for version 2.5 they used 16F688 I think there is a confusion.

What's the micro that used in it?

Is it 16F88 or 16F688?

Waiting your reply.

Statistics: Posted by hassawfaa — Tue Dec 09, 2008 1:53 pm

LCD for RN1

2008-07-02T19:26:53+01:00

Someone, I forgot who told me which LCD to buy for the Robonova-1. I think it was Tony from hitec. I just can not remember. It was at either the 1st Hitec cup or at Robogames.

Statistics: Posted by Gort — Wed Jul 02, 2008 7:26 pm

Hi i-bot is possible to set at *.hex changing baud rate

2008-04-02T10:45:47+01:00

Hi i-bot,
I found V2.5 hex on sparkfun website.It's possible to change hex code then programming to PIC chip.
http://www.sparkfun.com/Code/serlcd_16F688_old.zip
thanks
jeff

Statistics: Posted by jeffchifu — Wed Apr 02, 2008 10:45 am

Hi i-bot my serlcd v2.5 board

2008-03-31T14:59:00+01:00

my serlcd v2.5 board
http://www.robofun.net/forum/viewthread ... e=4&extra=

Statistics: Posted by jeffchifu — Mon Mar 31, 2008 2:59 pm

LCD for RN1

2008-03-30T16:59:55+01:00

Does your V2.5 have a 16F688 or a 16F88 processor ?

Can you send a picture of the SerLCD board, so I can compare with mine.

Most people seem to have problems saving baud rate to EEPROM, but I don't. I feeling left out

Do other parameters save to EEPROM OK ? (splash screen for instance)

Sparkfun have been unhelpful so far, maybe we can shame them into resolving this.

Statistics: Posted by i-Bot — Sun Mar 30, 2008 4:59 pm

Thanks again

2008-03-30T14:51:20+01:00

I bought SerLCD 2.5 from Sparkfun
I used below code to change baud rate to 4800 but cannot save setting in EEporm
Code:
' Change speed from 9600 to 4800
ETX 9600, &HFE
ETX 9600, &H01
ETX 9600, 57
ETX 9600, 54
ETX 9600, 48
ETX 9600, 48
ETX 9600, 45
ETX 9600, 62
ETX 9600, 124
ETX 9600, 12
DELAY 10
ETX 4800, 52
ETX 4800, 56
ETX 4800, 48
ETX 4800, 48

With the LCD on the ERX Pins to set 4800 or:
Code:
' Change speed from 4800 to 9600
ETX 4800, &HFE
ETX 4800, &H01
ETX 4800, 52
ETX 4800, 56
ETX 4800, 48
ETX 4800, 48
ETX 4800, 45
ETX 4800, 62
ETX 4800, 124
ETX 4800, 13
DELAY 10
ETX 9600, 57
ETX 9600, 54
ETX 9600, 48
ETX 9600, 48
thanks i-BOt

Statistics: Posted by jeffchifu — Sun Mar 30, 2008 2:51 pm

LCD for RN1

2008-03-30T09:58:13+01:00

When you say LOCATE 2,0 this is column 2 on the first row. That would be PRINT &HFE,&H82.
For LOCATE 0,1 you would have PRINT &HFE,&HC0

Check out the SerLCD data sheet if you have more than two lines.

The speed should be automatically saved to eeprom when changed. Though we have seen this as a problem on other displays. Mine saves to EEPROM fine. Did you build the SerLCD V2.5 from the code I sent, or s it bought ?
It is very strange if the same code gives different results.

Statistics: Posted by i-Bot — Sun Mar 30, 2008 9:58 am