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1  Using Arduino / Sensors / Locking connector for sensor shield on: October 22, 2012, 09:42:45 pm
There is a read only topic about this that was not answered. Check Mouser, Molex parts 70553-0037 and 50-57-9403. China is great at copying.
2  Community / Local Groups / Tallahassee Florida on: September 15, 2012, 02:42:51 pm
We have a local Arduino group as part of the local Makerspace ( www.ToTallyFabLab.com ). For info and Newsletter contact rinthesun@embarqmail.com.
3  General Category / General Discussion / Ubuntu on: September 15, 2012, 02:32:06 pm
A few months ago I asked about using Arduino IDE on Win 98se.  Forget that. Use Ubuntu.

I have been running my Arduino development on an Win XP PC and its OK but slow. I am use to using Tinyboot with the PIC processors on WIN 98se and it's fast.

I have gotten involved with a local group setting up a Makespace and I have started a Arduino subgroup. I needed a PC to take to the group meetings, so using a spare set of motherboards I assembled a Ubuntu machine. It works great and is several times faster than my XP PC. Here is what I have running so far.

Ubuntu with Wine
TinyCad, for schematics
Arduino IDE
Geany, programmers editor - runs on both XP and Ubuntu
CoolCom, terminal program
LibreOffice, Open Source office package is great.

Next, FreePCB or equivalent Linux program to layout PCB's, any suggestions.

4  Using Arduino / Microcontrollers / Re: Optiboot with FTDI breakout removed on: September 15, 2012, 01:59:16 pm
The #117 has a beeper connection and a command that works.

I have found that the #117 is erratic at 9600 baude and a emulation I wrote for the PIC 16F886 works fine. I expect the Atmega328P should work also.

Ultimately, I will use this serialLCD in a process controller.

I have looked at the product you mentioned, but the info he provides is sketchy and I don't wish to buy one to determine how well it works.
5  Using Arduino / Displays / Re: LiquidCrytal library at runtime. on: September 15, 2012, 01:32:26 pm
---bill
I am writing Arduino code to emulate the PH Anderson serial LCD. There is a command to change geometry while code is running. It is mainly used to track cursor position. In using the LiquidCrystal library, I don't want to clash with whatever the library is doing. I understand the the standard library handles 80 characters, 20x4, 40x2. I also understand that there is an extended LCD library.

I have written such code before in Oshonsoft Basic for the PIC 16F886 with good results and now I want to do it with the Arduino (Atmega328P).
6  Using Arduino / Displays / Re: Problem With Interfacing LCD with Arduino on: September 14, 2012, 03:11:17 pm
Here is my setup. That's an Arduino designed to be plugged into the solderless breadboard. You could also use the Arduino Nano or the Modern Device BBB in a similar way. You can see the header on the LCD.

7  Using Arduino / Programming Questions / Re: hardware serial bauderate on: September 14, 2012, 11:53:12 am
Not so. I used the PicSimIde from Oshonsoft and wrote a emulation of the PH Anderson serial LCD. That Basic handles the runtime problems.

The problem with most of the PIC Basics is that if a keyword does not exist, as for the LCD, you have a problem. There are really not any library functions ( except Swordfish )which is the strengths of the GNU compiler used by the Arduino. GNU also has a linking loader. You can write your own library or hopefully someone else has done it. And there are those new keywords that Basic lacks.
8  Using Arduino / Displays / Re: Problem With Interfacing LCD with Arduino on: September 14, 2012, 11:02:04 am
Take a picture of the LCD (without flash) with the pot. at full clockwise and full counter clockwise. In one extreme the LCD will be blank at the other it will have a matrix of character size black blocks. If you do not get this go no further. something is wrong.

When I use one of these displays I solder a 1x16 male header to bottom of LCD and then plug LCD into solderless breadboard. Then using solid wire add pot and wires to Arduino. That way I know all connections are good.
9  Using Arduino / Displays / Re: Wiring up an LCD on: September 14, 2012, 10:42:24 am
Are the holes large enough to accept a .025" square pin. If not you may be able to use a 2x8 socket

http://www.futurlec.com/Connectors/FHEADD16.shtml

The're quoted as .025 pins but the're not and may fit. Same size as headers on Arduino.

Try some different sizes of solid wire and find one that just fits. Measure thickness.

Here is what I do. If .025" square posts will work, I solder a 2x8 male header onto LCD and then use ribbon cable with connector to wherever. I have made a small pcb to transition from 2x8 to 1x16 so I can plug display to a solderless breadboard.

If .025 does not  fit try Mill-Max, for a header that will. See Mouser, etc.
10  Using Arduino / Displays / LiquidCrytal library at runtime. on: September 14, 2012, 10:22:08 am
Can the display format be changed at runtime. I am writing code for a serial LCD display and want a command to change the format (geometry: 4x20, 2x16, etc. ) at reset.
11  Using Arduino / Displays / Re: LiquidCrystal library on: September 14, 2012, 10:17:31 am
Thanks.

So the standard library will do 4x20, 2x40, etc. for a total of 80 characters?
12  Using Arduino / Programming Questions / Re: hardware serial bauderate on: September 14, 2012, 10:11:26 am
Thanks. That's what I wanted to know.

I am use to PIC Basic and in some it can only be set at compile time.
13  Using Arduino / Microcontrollers / Re: Optiboot with FTDI breakout removed on: September 14, 2012, 10:01:38 am
OK, I'm an idiot.

It is not the Optiboot that is the problem but the serial LCD. The LCD on power up or reset goes thru a startup sequence. Sending characters to it before the sequence completes ends in hangup. I need the delay for that reason. I should have known that because I wrote the serial LCD code, though it was 2 years ago.

The Optiboot is fine.
14  Using Arduino / Microcontrollers / Re: Optiboot with FTDI breakout removed on: September 13, 2012, 01:07:21 pm
A delay of 110 milliseconds resulted in failure. I have set it to delay(150).

TIM7, without a serial LCD how did you know the code was working on the Arduino Pro?
15  Using Arduino / Microcontrollers / Re: Optiboot with FTDI breakout removed on: September 13, 2012, 12:07:48 am
We'll leave it for now. I will shorten the delay and find minimum.

I worked on old mainframes and way back to 8085s and I have chased many, what we called, gremlins that made no sense. Maybe others will see a similar problem and in time it will make sense.

Thanks for taking a look at the problem.

I see that the Arduino Pro uses a resonator and mine a crystal. The frequency difference may make it work. I have several unpopulated pcbs so I may assemble one and use a resonator.
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