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  1. Braeden Hamson

    Power calculations aren't this easy are they?

    So uhh, I realized today that some of my basics are shaky. Lets say you have a device that consumes 10W of power, and it runs for 5 hours. Did it consume 50 watts? What if it ran for 5 seconds? Now lets say you have a resistor that is 1000 Ω, running at 10 V. P = V^2/R so 10V^2/1000Ω = 1 W. If...
  2. Braeden Hamson

    help with variable speed motor

    Not sure if you're still around, but it looks like you can adjust the speed be feeding 0-10v into those screw terminals. Apparently it can also take serial communications and PWM.
  3. Braeden Hamson

    What is this piece in a cell phone camera?

    Hey guys, I pulled apart a cell phone camera and found what looks like a filter but as far as I can tell doesn't act like one. But hey I can only see in visible light. This sat right above the sensor. [mod edited to correct images]
  4. Braeden Hamson

    Is anyone an expert in wafer fabrication?

    You are correct, I'm more interested in the "complete product" that is the silicon die (proper term?) that can actually do a function. While I am fascinated with the process of creating raw silicon wafers, that's outside the scope of my paper. But I think this avenue of inquiry is now the...
  5. Braeden Hamson

    Is anyone an expert in wafer fabrication?

    Damn, I just realized one of my sources is from 2007. It says "Published online 2013" but it was actually published in 2007... SO its all out of date information.
  6. Braeden Hamson

    Is anyone an expert in wafer fabrication?

    I don't need an "expert" per say, I'm simply looking for someone knowledgeable in wafer manufacturing to answer a question. I'm writing a paper on how the electronics industry has impacted the Chinese economy, specifically the middle class. In my research I've found that Chinese manufacturers...
  7. Braeden Hamson

    I think I can log in by pressing "Forgot password"

    Its very strange I've kind of forgotten my pass word. Yet as soon as I press forgot password, boom. I'm logged in.
  8. Braeden Hamson

    What should I do with unused outputs?

    First off, damn this new website looks nice! I really feel like I should know this answer but just to be safe. I'm going to use a 74HC163 without any other counters. http://www.ti.com/lit/ds/symlink/sn74hc163.pdf ←Datasheet Therefore I don't need the "carry out" pin. I know that you should...
  9. Braeden Hamson

    A couple of questions on accelerometer specs

    Haha that's very true, thanks again
  10. Braeden Hamson

    A couple of questions on accelerometer specs

    Thank you very much. My professor gave us one commandment "thou shalt always read the notes." Still true I suppose. Your post will really help me fully digest this particular datasheet. And I think your graph is accurate. We tested the sensor with an oscilloscope (unfortunately we can export...
  11. Braeden Hamson

    A couple of questions on accelerometer specs

    So I've joined my schools Formula SAE racing team. Pretty neat. They've stuck me on the task of building an impact data logger for their car's impact attenuator. The impact should not exceed 18G max. Taking into account the length of what is in essence a crumple zone, I've calculated the main...
  12. Braeden Hamson

    Simple moisture meter circuit?

    Yeah buying one sounds better than building one. If you're not interested in electronics. If you are however this would be a great arduino project.
  13. Braeden Hamson

    Windows 10 website blocking

    Hmm, I like a chrome plug in called StayFocusd. You can set time limits for specific websites. After which time, you can block access to certain websites, or the internet as a whole. It's very customizable and easy to use...
  14. Braeden Hamson

    Simple moisture meter circuit?

    Can we get any details on your meter? Also what's your electronics skill level? Depending on the type of probe you have this could take some doing.
  15. Braeden Hamson

    What's up with my ground plane?

    JLC PCB its a low cost PCB manufacturing house. You can get PCBs of good quality for $10 Thank you for answering my questions. Haha PCBs are art eh? I think I'm in my "abstract phase"
  16. Braeden Hamson

    What's up with my ground plane?

    Two more questions: I know right angle corners on traces is bad, but what about right angle into a via? I made this design just by looking at other PCBs and google. Anyone know any good resources on PCB design?
  17. Braeden Hamson

    What's up with my ground plane?

    Yes please pick apart my PCB, no jokes I really appreciate it. I didn't connect the grounds, because they're on different supplies. I'll be using a wallwart (wallwort?) power supply to run the 555 PWM circuit for lighting. I'm gonna get a PS from a thrift store, so its quality will be unknown. I...
  18. Braeden Hamson

    What's up with my ground plane?

    Okay here's what JLC is showing me
  19. Braeden Hamson

    What's up with my ground plane?

    Darn. I've stepped away from my computer, I'll post a picture if I don't clear it up in the mean time. But my ground plane doesn't look solid. It's a number of horizontal lines. I think I'll up the trace width with which (say that 5 times) I made the polygon. I doubt they're connected but...
  20. Braeden Hamson

    What's up with my ground plane?

    So here's my first board design: https://jlcpcb.com/quote/gerberview/aa2ca0f4-898b-44e2-bb7c-5b7aad202830_2_53_1_0_0.html If you look in the upper right corner, the ground plane is striated. Then if you look towards the center that ground plane is solid. I have no clue what is going on. I'm...
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