User stories

Alice works at the local heritage center. She wants to scans an old book on the diybookscanner.

First, she switches on the general power switch. The scanner controller board starts booting. Now she switches on both cameras. She sees the URL of the scanner web interface on a sticker glued to the scanner. [there is some magic in this statement; how is she connected? via wifi?] She enters it into the web browser on her tablet. It takes a bit of time before the page loads [this shouldn't be just empty loading time, the scanner should let her know that it is doing something - also hate to say this, but waiting might not be ideal, if it can at all be avoided].

The web interface shows her there is a problem with the scanner. It is unable to find its two cameras entirely. It suggests her to start by checking the USB and power cabling and making sure they are both switched on. She does that and notices that for some reason, the USB cables were unplugged. She plugs them back in again.

Without her interacting with the web interface, when she looks back at her tablet, she sees that the warning has changed. Now the scanner tells her that there are two cameras attached, but that they are missing the required scanner firmware. The scanner suggests her to switch of the cameras, verify that the firmware SD cards labelled "A1400 camera scanner firmware odd" and "A1400 camera scanner firmware even" are inserted into the cameras and locked, and switch the cameras back on. It turns out lock was off. She fixes the issue. The web interface now seems happy, with no more warnings.

Now the scanner asks Alice for some information about the book she is going to scan: the title, the authors and more. She's in a hurry, and this is really not a book, but an old baptism register, so she skips most of this step. She sees the cameras wake up, zoom and focus. The scanner now tells her it's ready to capture.

Alice puts the book in the scanner cradle. After adjusting the cradle width for the book's spine (it's a 1500 page book!), she pushes it up against the plates and pushes the foot pedal. The cameras trigger simultaneously. Three seconds later, her tablet shows her the pictures the cameras have just grabbed. She lowers the cradle, turns the page, and just then her phone rings. While she turns around to grab her phone, she steps on the foot pedal by mistake. The phone call finishes. Alice sees a totally unusable picture on screen. She taps the "recapture" button on her tablet. The second attempt yields a perfect result.

When at page 250, one of the cameras suddenly stops working. The web interface complains about being unable to find the left camera. It suggests her to start by checking the usb and power cabling and restarting the camera. She just restarts the camera and notices the web interface is happy again. She continues the scanning task.

Halfway through the scanning session, Alice receives a phone call .