Scale integration problem: Access to the port 'COM3' is denied

[markjw]

You need to see what the scale is sending the computer. Have a look here at this tutorial, it gives details how you can see what is sent using using the Putty app. It could be the scale is only sending one time. Also important not to have any other driver or scale software trying to access scale at the same time - SambaPOS accesses directly from the COM port so no other software or driver should be needed.

[New 4.1.4] Scale Integration

You can connect scales to SambaPOS by configuring a scale from Management > Local Settings > Devices [image] My Scale is CAS ER model. To configure port click Settings and choose the port your device is connected to. [image] When a scale connected, scaling automatically updates Number Pad value. So when you add a product quantity value becomes scaled value. [image] Custom Scale If your scale does not listed here you can try integrating it by using “Custom Scale” option. To be able to …

I have only once tested scale with SambaPOS, and I did get it working but needed to customise as I was using a different brand scale.

@JTRTech

but imagine they are similar to barcode reader/msr etc they work like a quick keyboard

No, scale sends the data directly to COM port, it doesn’t work similar like MSR or barcode scanner - it doesn’t send via an emulated keyboard. However as mentioned SambaPOS has support for scales built in.