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qzind / qz-print

Archive for legacy qz-print versions (1.8, 1.9). See https://github.com/qzind/tray for modern versions.
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Applet can't read weight from scale #138

Closed tresf closed 8 years ago

tresf commented 8 years ago

1.9 branch only

  1. Go into Java Control panel and enable full stack trace and console.
  2. Attach a Mettler Toledo scale via serial port
  3. If QZ Tray is running, close it so that we can fallback on the Applet
  4. Go to https://demo.qz.io using a browser still capable of running Java (Firefox, IE)
  5. When loaded, click "List All Ports" in the serial portion of the demo
  6. Ensure the COM port selected is correct by matching it against Device Manager
  7. Click "Open Port"
  8. Click "Send Data"
  9. Error "No data was returned" appears.
  10. Observe console says ☐000.00 (evidence the value was written although it was never sent to web page correctly)