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For an experimental project I’m working on, I wanted to read the weight from a DYMO M10 digital postal scale with USB support. I expected the scale to show up as a virtual COM port, since older digital scales used RS232 for their computer interface,but the scale shows up as a USB HID (Human Interface Device) in Windows. I found which shows how to read from a MagTek credit card reader in Linux using. Like the DYMO M10, the MagTek reader uses the USB HID device class so the basic method for getting data from the device is the same.

The first step is to install PyUSB 1.0. Unzip the contents of the archive from the and run python setup.py install. Using PyUSB on Windows requires installing a suitable backend such as. After installing libusb-win32, it’s necessary to install a device filter for the scale. Connect the USB scale to the computer and press the power button. Windows should detect the scale and install the device driver automatically.

The DYMO M10 shows up in Device Manager as a “USB Input Device” with vendor ID 0922 and product ID 8003. Using the libusb-win32 Filter Wizard, install a device filter for the scale. It will show up in the list as “vid:0922 pid:8003 rev:0100 USB Input Device”.

I’ve been searching for the same thing. I ended up purchasing the M10 and tried to disable the auto-off feature using the instructions for the S100: “1.

While the scale is off, press and hold kg/lb. While holding kg lb, press “On”. The display shows A.OF and then 0.0 when ready. The scale now remains on until manually turned off.” Unfortunately, this didn’t work. I contacted Dymo.

They said that it doesn’t have the ability to disable the auto-off feature. It seems ridiculous that it’s not capable of being disabled since most volume shippers don’t want it to auto-off.

So my question is, does the computer communicate with the M10 or is it only one-way communication from scale to computer? If the former, is there any possibility of creating a script that will keep it on? Hi, i know this is an already 2 year old post, but i hope I can still get some help. I try to do the same thing in JAVA with the javahidapi. I am able to get the device (also with deviceById), but then I dont know how to read the data from the scale.

When I run device.read in a loop I wont get any data from the scale. Do I have to first write a command to the scale? I just dont know how I can communicate with the M10. What does it want me to send, what does it send to me? Yes I’m really desperate to post here:P, but I have been stuck with this problem for hours now.

Sorry Carol, I’m unable to give an Excel integrated solution. Anyhow you may use the python code to add values to a CSV file and then import the data into Excel. Probably there is also a way to execute an Excel macro which will call some external python script. So this could all be started/executed from within Excel. I have a question too. I am using a Dymo S400 scale and want to monitor the weight of one of my bee-hives from spring on until honey harvest. Tally 54. I am using an Raspberry Pi to do so.

Unfortunately the scale will only measure weight after lifting the hive at first, then turn on the scale and then putting the hive back on the scale I would prefer a solution without lifting the hive at all. Anyone know a way how to do it. Probably with a scale from another manufacturer?

Many thanks in advance! Hello Steven, or anyone else who can help, I know this is an ancient thread but I have been working with the DYMO M25 for a while now using a LabVIEW based VISA driver with which I can see the same 6 elements as you describe (when I’m not having connectivity issues which I think has something to do with LV not closing the connection properly). Anyway, were you ever able to read negative numbers? I am trying to measure push/pull torques so I would like to use both directions of the load cell. I tried to artificially bias by tare-ing with 10lbs but that doesn’t work. The second element indicates “2” for zero or stable, “4” in the positive direction, and “5” in the negative direction but the weight always reads zero (even though the scale display measures the negative values).

Any help would be great! On the off chance anyone is still monitoring this post, I have a question. First, though, I want to thank Steven for posting this.