Re: How I scan, was Re: xsane can't see Brother ADS-2700W scanner
On Wed 31 Mar 2021 at 17:05:57 -0400, Stefan Monnier wrote: [...] > The option I favor is that the scan is controlled by your own computer, > but you can trigger new scans by hitting buttons on the scanner > (i.e. the button-presses get sent to your computer who then decides > what action to take in response to them), so that you can comfortably > setup the scan parameters on your computer and then you can comfortably > scan the various documents without having to go back to your computer > between them. > > Sadly, I haven't figured out how to do that yet :-( There appear to be three aspects to solving this problem: 1. SANE detecting when a scanner button is pressed. 2. A button press being captured and known to the system. 3. Activation of a script. I can see 3 being solvable but how about 1 and 2? -- Brian.
Re: How I scan, was Re: xsane can't see Brother ADS-2700W scanner
On 2021-03-31 22:05, Stefan Monnier wrote: Scanning the output to a server just seems plain obvious to me. What's the downside? It has its advantages, indeed. On the downsides: - the scanner usually has a very limited UI, making it difficult/inconvenient (if at all possible) to control and select the scanning options, compared to the comfort of a large screen. - scanning to a server implies allowing the scanner device write access to a server, which either implies the users authenticating themselves on the scanner itself (which is rather problematic and is compounded with the previous downside), or making the scan result land on an "anonymous" area where anyone can see what anyone else scans. - It usually means you're stuck with the functionality that the manufacturer decided to include in the scanner's software stack, because it's always proprietary or "walled" (it may contain Free Software for all I know, but I can't access nor modify the code). The option I favour is that the scan is controlled by your own computer, but you can trigger new scans by hitting buttons on the scanner (i.e. the button-presses get sent to your computer who then decides what action to take in response to them), so that you can comfortably setup the scan parameters on your computer and then you can comfortably scan the various documents without having to go back to your computer between them. Sounds like we have yet another use for a Raspberry Pi or similar small and cheap computer. Hook it up to a dumb USB scanner, the local network and a touch screen. Users can walk up, put their originals in the scanner, and use a much richer UI to chose their scanning options. The scans are emailed to them in their preferred file format using the email address they gave when they authenticated. I wonder if such an open source project already exists? -- David Pottage
Re: How I scan, was Re: xsane can't see Brother ADS-2700W scanner
> Scanning the output to a server just seems plain obvious to me. > What's the downside? It has its advantages, indeed. On the downsides: - the scanner usually has a very limited UI, making it difficult/inconvenient (if at all possible) to control and select the scanning options, compared to the comfort of a large screen. - scanning to a server implies allowing the scanner device write access to a server, which either implies the users authenticating themselves on the scanner itself (which is rather problematic and is compounded with the previous downside), or making the scan result land on an "anonymous" area where anyone can see what anyone else scans. - It usually means you're stuck with the functionality that the manufacturer decided to include in the scanner's software stack, because it's always proprietary or "walled" (it may contain Free Software for all I know, but I can't access nor modify the code). The option I favor is that the scan is controlled by your own computer, but you can trigger new scans by hitting buttons on the scanner (i.e. the button-presses get sent to your computer who then decides what action to take in response to them), so that you can comfortably setup the scan parameters on your computer and then you can comfortably scan the various documents without having to go back to your computer between them. Sadly, I haven't figured out how to do that yet :-( Stefan
