5/12/2015 version 110b
Fixed upload to new Mega bootloader.
More than one ADC can be used now. Multiple parallel circuits warning.
11/08/2014 version 1.07a
Added Arduino Nano support. PWM, ADC elements available on Arduio Uno and Nano. Note: There are fewer input and output pins now to make room for PWM and ADC.
Some bugfixes. Thanks to Adam J. and Mark W.
Windows v.110c package. Unzip, run main.exe in program folder.
Windows 10: A user provided this link to get PyQt4: https://sourceforge.net/projects/pyqt/files/PyQt4/PyQt-4.12.3/
Arduino Nano bootloader issues:
1) Burn bootloader using Arduino IDE version 1.6.9, and a USBASP programmer.
If one could find the older bootloader that nano's use to ship with, and burn that onto the Nana, LadderMaker should work with the correct hardware chosen.
Saving a ladder: Add the extension .wlm to the file name when saving, On some systems the ladder will be blank when it is re-loaded if the .wlm extension is not used.
Running Python Source: Browse to Program folder, open a terminal, and run main.py. Requires Python 2.7 and pyQt4. Must be run in a terminal for USB testing and upload to work.
Mac: Use a virtual machine such as VirtualBox, run Linux.
Introduction to Ladder Logic: On Slideshare- LINK
Posted by admin on February 15, 2016
The C code that LadderMaker generates can be used in The Arduino environment with some modification.
Posted by admin on May 09, 2015
LadderMaker access to an Arduono via USB on Linux.
This is a step-by-step cut-and-paste guide to adding a rules file so that non-root users can have access to an Arduino via USB. This applies to Ubuntu, but should work for other Debian based Linuxes, such as Mint.
Cut and paste the following commands into a Terminal: (LXterminal is recommended, as it allows mouse right click pasting)
This will open an editor, editing the file arduino.rules. Paste the followint into the file:
Type ctrl X. When prompted: type Y, enter. This will save the file.
Now disconnect and reconnect the Arduino.
Posted by admin on April 07, 2015
Many people have commented that the inputs are inverted. This was done intentionally so that pull-down is active, and optical isolation or pushbuttons will work as expected. The internal pull-ups are activated in the Arduino on all inputs.
There is a new version of LadderMaker almost ready to publish. It will be version 108. The bug that prevents more than one ADC input from working is fixed. There is also more entries in arduino.rules so that more versions of the Nano will work under Linux.
There remains an issue with two or more parallel (OR) rungs. OR rungs that are shorter than the one above, that are not left justified do not work properly:
(Does not work.)
This does work:
I am trying to get this bug fixed, but for now a workaround using internal outputs will be the only option for multiple parallel rungs.
Posted by admin on July 05, 2014
Ladder Maker verson 104 now has the following new features:
Some notes: multiple PWM elements can be connected to a single output. The first active PWM element will apply. This way several speeds can be used on a single output.
Timer and Counter can now be used with math. A 16 bit register stores their value. and is available by charing the name.