Hi,
Reading through your post i cant see why you need different buttons for store and pressed? both seem to have the same functionality. You press either one, you are asked for a username and password that you test against a known set and you then open the door for x amount of seconds?
I have attached a demo vi that shows an example of this. It doesnt actually test a username and password from an xl sheet (just pretends to pass). It uses led's to indicate state of the door (open or closed). Unfortunately this is written in Labview 2009, i tried to convert to 8.5 but keeps crashing my computer. Hopefully someone else on here might convert for you and then re-post.
Many years ago now i actually developed a product very similar to this that was used in Macy's stores in America. Was similar in many ways. The units where used to charge mobile phones whilst people shopped. The way i worked was like this:
User would select an empty booth (full booth buttons where disabled)
The user would then input phone type (used to turn on correct power supply)
The door would then open
The user would then insert phone and connect to power cable
they would then be asked to enter a password and confirm
the door would then close and lock
The unit would charge the phone for x amount of time depending on price payed and then turn off the charger.
To retrieve the user would select there booth
enter password
door would open
after a long time out period door would close itself
Is this what you intend. Do the user have to enter there own password on entry and then repeat on retrievel or are they meant to know a pre-existing password and username. If not i cannot see why you would need different buttons for storing and retrieving?
The unit i designed years ago was not actually written in Labview so cannot show you any examples of that code.
How does the door open and close. Is it just simply a door that has a mechanical lock or to you have a motorised door with open and close indicators? If it is a motorised door you may possibly need to add a stalling routine incase someones hand is in the way whilst closing. This should detect the extra current through the motor caused by a stall and then possibly reverse a bit and retry several times before stopping completely.
Good luck.
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