![]() I don’t have experience with this product, but if they are as identical with my product as they look like, I can recommend them and would give them more than the 3 stars that the product has on Amazon. I haven’t found that product on, but similar products that looked exactly the same but had different names, like this product (affiliate link). I ordered my USB RFID reader from Amazon Germany (here is the link: ) (affiliate link). Which means that I want to attach unique part IDs to process parameters, sensor readings and results from quality inspection to cfreate data for analytics approaches. I will use the parsing flow to use the tag IDs in an industrial IOT demonstrator to try out product-centered process-data acquisition. So just enter and execute node-red-start in your command line and access the dashboard with the IP address that will be displayed in the command line after Node-RED is started.Īfter we have build our parsing flow, we can check the results in the debug-panel when we read our RFID-tags with our reader.īased on Node-RED, we can now further digest this ID, store it to databases or trigger other events and flows. Since reading/writing the USB devices is not allowed with the standard pi user, don’t forget to grant access to those devices as described on the flow-page in the setction “How to use”. If you haven’t installed npm yet on your raspberry pi, you find a quick solution here. We install the flow with the following command: npm install node-red-contrib-usbhid Nevertheless, we will use the flow node-red-contrib-usbhid to interface the usb reader. With current raspbian images, Node-RED is already pre-installed. Raspberry Pi (affiliate link) USB RFID Reader (affiliate link) Preparations I will not go too much into detail regarding the format of the byte arrays and the HID message format in general, the approach is more straight forward to get to a result quickly. With Node-RED, you can easily prototype this parsing in a conveniant way, which will be described in that tutorial. On the left hand side, when connected to my Windows Laptop, you directly get the ID, whereas on the right hand side we see the byte arrays. ![]()
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