Using a cash drawer

@ko31
Currently, the cash drawer should not usually open at all, but if you have enabled buzzer support then it probably will open. This is because cash drawers and buzzers both use the same connector and circuit to drive them.

Because this plugin has been so focussed on remote order printing, Cash drawer support has not been a big priority. Recently, it seems to be used for more point-of-sale like applications too, and so I would like to improve cash drawer support. This will require an extension to the document builder API, and config option, and a filter so that you can add your own logic to determine if the drawer should open (e.g. maybe you want to open depending on the payment method?).

Since this is going to have to be a feature request for the 2.1 release, maybe worth requesting on the GitHub page, or discussion board?

@lawrenceowen
Thank you for helping.

I think that a cache drawer support is a lower priority than the other printing features, so it doesn’t need to be on the list for the 2.1 release. But I’m glad to see that it will be supported in the future.

> Currently, the cash drawer should not usually open at all, but if you have enabled buzzer support then it probably will open. This is because cash drawers and buzzers both use the same connector and circuit to drive them.

By the way, the cash drawer opened when printing, even though the buzzer function was disabled in the plugin settings screen. (Actually, I don’t have a cash drawer, and that’s how it worked when my client tried it.)

If I can customize the code to avoid this behavior, would you tell me how to do that?

@ko31

Which printer model and plugin version is your customer using? I’ve just scanned through the 2.0.x branch and don’t seen any code that could trigger the drawer to open except the buzzer feature. I was half expecting to find an embedded command left from the initial developer of this plugin. If the buzzer support is definitely disabled and it is still opening, then I either have a bug to deal with or need to look harder.

Due to Covid-19 restrictions, I am working from my home office and also don’t have a cash drawer, so my testing is limited too now. But I can probably arrange for a drawer circuit tester to be sent to me.

@lawrenceowen

Thank you for your information.

Actually, I have an opportunity to borrow the cash drawer from my client in the near future. So I’m going to try the printing myself.

I will report back to you when I can test its operation.