My contribution to the increasing entropy, and eventual heat death of the universe
Archive for the ‘Uncategorized’ Category.
Below are some pics of a Sony CCD M8 Video Camera… I bought this “untested” and am curious to play with it. In particular I’m interested in seeing what the CCD is like at some point… The camera powers up with the two battery contacts nearest the front of the camera as positive and the rear two as negative. It takes a 6v supply and at peak draws ~1.5A.
The above images show the control PCB from a Philips hair clipper. The board takes a 15v input and controls what looks like a 6v brushed motor.
The PCB has two Suppo 750mAh AAA NiMH cells attached to it. My guess is that U101 is a boost converter for the ~2.4v from the battery. This seems likely given that an inductor sits next to it and given the designation of the inductor (L101).
I also find it interesting that they’ve gone with a single sided PCB and used 7 zero ohm SMD resistors to bridge traces. I see single sided PCBs in cheap toys a lot. But this board surprisingly has mask and silk. If the single sided board is motivated by cost, then I’m surprised that there is significant cost benefit…
I attached a 5v supply to the motor (you can see the red and black wire stubs where the motor attached in the images above). With a 5v supply the motor works as expected.
Close up of the IC. 1CC40 6K731? Looks like this part: https://www.st.com/content/ccc/resource/technical/document/datasheet/group3/71/e8/26/3c/c8/cc/46/e6/CD00292360/files/CD00292360.pdf/jcr:content/translations/en.CD00292360.pdf
I previously posted my ILX511 CCD Interface for the ICE40 here. I received the board and brought it up, there were several stupid issues that required rework (most significantly I had Vdd and Vss the wrong way round in one place!). This version of the board fixes those issues. Kicad files/gerbers here. There maybe another update if this design also requires some hacks…
I threw together a quick boost converter with a DIL layout to use in some of my prototypes. There are a number of small step up converter modules available, but I wanted to design my own. I wanted to use parts that could be sourced from Digikey, or Aliexpress (at lower cost). I also wanted to be able to select the output voltage between 1.8 and 5v. So I threw together this design that uses the TPS61071. Will see how well it works.
The Kicad files and gerbers are in this tarball. I will likely post again once I’ve received and revised the design…
My name is Nava Whiteford. I’ve worked for a few sequencing companies. I have equity in a few sequencing companies based on my previous employment (I try to be unbiased in my posts). You can contact me at: [email protected]
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