So, you can repair your microscope for several bucks )
Just remove lense and LEDs from that board and place it in the tube, don't forget to adjust it's position according to distance between original lense and CMOS on original board, and solder LEDs from original head. Just search on Ali "endoscope camera module kit' and select module with right size (they are shorter, but width is various a bit). Aliexpress offers boards with same schematics and same cmos (they all the same for china thinn microscopes and endoscopes). Just replacement of SPI flash will not helps if we have not firmware.bin But we have a good news. Acer webcam board with same schematic and same encoder has 8-pin chip marked as 25VF512, so 25***512T is a key, its a 512K SPI flash to load firmware on SONIX chip (or clone). Chip on Andostar board marked as 250512T - CH1314. Acer webcam board helps to understand this.
One more update, 8-pin IC is not LED driver, i have an mistake. Interesting way to use 6 wires in a 4 wire connector.Īs always your comments and questions are always welcome. attached below is the schematic of the USB cable, one interesting piece for us was the junction of the blue and black wires back in the PC USB connector.
In the meantime we hope you enjoyed this look inside a piece of interesting technology. We really enjoyed using the Andonstar Microscope here at NoYoo, and some time soon we'll be on the look out for a new one. sadly though no reassembly for our microscope, with no data available, and no discernible faults in the cabling, connectors or wiring, we're left with the daunting task replacing a 40 pin chip, on a tiny board with no real confidence that the problem would be fixed. Reassembly is the reverse of what we have done here, I would re-apply the hot snot, and be careful with those brass pins and the LED wires. Well that's about all there is to see inside the Andonstar 2MP microscope. The balance of the passives and other devices of no real interest the 65E9 is just a BJT and the A701 perhaps some form of voltage regulator.
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