We all bought one of these USB microscope at the SEG Market. We were immediately fond of the heavy base and the smooth adjustment of the camera. We bargained a bit and bought it for 260 RMB ($40), that’s half the cost of the same thing on eBay from another China seller.
Some example shots and a short review below the break.
According to a product specification we found online the camera isn’t that impressive, only 0.3 megapixels.
- DSP : High power Digital Image Monarch Processor
- Sensor : High-quality CMOS sensor, 0.3M pixels
- Resolution : 640 x 480
- Interface : USB 1.1/USB 2.0
- Frame rate: 30 frames/sec(CIF and VGA)
- Focal distance : 10 mm- ∞
- Magnification : 1x – 200× (at 10mm on 17” screen by 640 x 480 resolution)
- USB cable length : 2 meters
The camera comes with a driver disk which has the driver for Windows both 32 and 64 bit. We found the software a bit frustrating as menus are sometimes hidden under the video overlay. For Linux we used gucview under Ubuntu, which seems to work fine and give the possibility to make a still.
First we took a better look at our trusty Bus Pirate v3a. This one was manufactured by Seeed Studio in 2010. We must note the resistors are 0805 size, instead of the 0603 we are currently using. The area is approximately 1cm x 1.5cm. Lighting seems a bit off, but the solderjoints and component values are easily visible.
Next is a .4mm breakout board for QFN and TQFP from unknown origin which didn’t cope with heat well. We tried to solder a QFN32 onto it but evidently we failed.
Some detail of the inside of a DECT phone with 0402 components.
The stand Ian got is a bit wobbly, but still usable. For $40 we got what we paid for, and overall a nice ‘toy’ to help inspect difficult soldering jobs.