I used my bench power supply, some jumpers, and a 33K pullup resistor on the wand output. I used the M100 schematic as a guide on how to connect the wand. There's only four pins used on the wand: Power +5 (pin 9), detector output (pin 2), and ground (pins 5 and 7).
I set the scope to single sweep with trigger on transition edge after I confirmed that I could see the output changing. Edge triggering let's you see the barcode pattern which looks pretty cool. You can hold the barcode up to the scope screen and see it match. I can't remember if it was rising or falling trigger but you'll figure it out once you see it on the screen. Jerry On Tue, Nov 1, 2022, 2:31 PM Will Senn <[email protected]> wrote: > Hi Jerry, > > OK. When Willard first mentioned speed, as in go faster, as a potential > issue, I was skeptical, but now it's starting to sound reasonable :). But, > now I wanna try the oscilloscope ( I love any excuse to get my Rigol and/or > Salae out). So, tell me, how did you hook up stuff? Did you just put the > scope in between wand and m100 for power and then monitor the other talking > pins, or did you just apply power to the wand via another power supply and > monitor the talking pins without the m100 being involved, or what? > > Thanks, > > Will > > > > On 11/1/22 12:43 PM, Jerry Davis wrote: > > I have the barcode reader and software. When I first started using it I > had the exact same problem you did. None of the drivers and demo > applications seemed to work. The wand LED is very dim on mine. The first > thing I did was print out some barcodes from a Google search. There are > some websites that will create a barcode from data you enter on a web > page. I attached an oscilloscope to the wand and saw that it actually does > a great job of detecting light and dark transitions regardless of > background illumination. I decided to accept that the software and > hardware are working and find out if the problem was the way I was using > the wand. As William suggested in his response, I had to practice a bit to > find the correct speed. It's almost a "flick of the wrist" for me. After > I got the hang of it, I was able to make the demonstration software beep > almost every time. All of the bar codes and drivers worked for me once I > figured out how to use the wand. > > Jerry > > On Tue, Oct 25, 2022 at 8:19 PM Will Senn <[email protected]> wrote: > >> So, I bought a BCR on Ebay, unboxed it and hooked it up. Loaded the >> driver, and the basic program to do the scans. But, when I scanned, the >> light came on, but no joy on beep or numbers. It's a pretty dim light... >> Any ideas to troubleshoot/fix? Supposedly, the only user serviceable >> component is the cap and that's fine. That dim light is concerning - were >> they usually a pretty bright light or were they always dim? >> >> Regards, >> >> Will >> > >
