SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T05:38:46-06:00SparkFun Electronicsieatlint on SEN-18088 - SparkFun 2D Barcode Scanner Breakoutieatlinturn:uuid:52295aba-2863-df2c-ad70-80a8608036e42021-10-19T09:44:10-06:00<p>Works great! Does a really good job reading any type of barcode I've thrown at it, including ones on phones. I don't have to struggled to read them, and it's very easy to align the camera with barcodes thanks to the projected light.<p>Sadly though, one undocumented limitation is that the buffer appears to be limited to 1020 bytes -- at least in USB-KBD and USB-COM modes. I haven't tested serial yet, but doubting it'd be different. If you attempt to scan a barcode with more than 1020 bytes, it appears to succeed, but instead replays the last actual successful scan. So it's also not possible to programmatically detect failed scans due to this.</p><p>Given that I purchased this to read the Smart Health Card QR codes, which are ~1.5k, it's an unfortunate limitation that I wished I knew prior to purchasing.</p></p>