This RU-vid channel a collection of random videos, mostly regarding electrical engineering or computer programming. More information can be found on my website swharden.com
This is an excellent video, very informative yet succinct. I hope very much that you're doing well and in good health and life is being kind to you now.
Outstanding project and good explanation! I'm wondering if you've worked with WasapiLoopbackCapture though. I can't find any way to change its buffer size, do you know if that's possible?
I did this without any of the extra capacitors and stuff shown for the QRS circuit and whatnot. I just have the AD8232, a voltage regulator and a battery. My computer isn't picking up the audio jack as a microphone, so I can't display readings, even though before I plug it into my computer the light on the AD8232 flashes with my heart beat, so I know the circuit itself is working. Is there any sort of software or driver I have to download to get the readings onto my computer?
😅sorry about your health. buut, i built you gdmaned ecg, it worked. instead of a computer i used a battery powered oscilloscope. its noisy but it worked. now to work on a 60 hz filter.
Hello sir, l tried the ltspice model of this circuit and got signal at different voltages. Thank you so much.. but l have one doubt in the ltspice model why we keep v2 and v3 voltages are constant?? (5volt) because when l tried ltspice model v1 source can provide different voltage ranges that makes effects in output, but at the same time v2, v3 constantly keeps. This is why?? Please reply..
Do you think it is possible to do this using the cheaper CH340 chip? It has RTS and DTR signals, but I'm not sure It's possible to control RX and TX like you did, individually...
I've spent 2 days trying to get one of these to program a PIC18. Still not working, but I think it's because of the erratic clock signal. Apparently the issue goes away if you use an external oscillator. I just happened to have a 12MHz oscillator, so I superglued it on the chip and connected it with some magnet wire. But, when I try changing the settings with FT Prog, it keeps reverting back to the internal oscillator. It turns out that the chip is a clone. No surprise there though. I ordered a couple genuine chips from DigiKey, and also an FT232H. On the bright side, at least now I know the crazy clock isn't my code.
OK, so I can now confirm that the clock issue does not exist with authentic FTDI chips (FT232RNL) from Digikey. I paid $7.60 each for 2 modules, and then $15.87 (including shipping and tax) for the 2 authentic chips. That comes out to $15.53 each. For what it's worth, it's still cheaper than buying a module from FTDI.
Excellent video. This helped me understand a problem I was having writing software to control an 8-channel relay board using the FTDI chip. Even when disconnected I was getting responses as if the board was connected. Then I watched your video and figured it out: I have a USB to serial converter on my PC too!! I would have never figured this out without your video. Now, how can I NOT recognize the USB to Serial converter?
I am a total noob here but I am studying to be a paramedic and I'd like to do this myself. How are the wires connected? Does this need to be welded? Is there a step by step video showing how you actually asembled it?
does it make sense to use this to check a regular magnetic door sensor? sending +5v to the sensor it will respond with +5v if is closed, I know it is not intended for that, can this damage the port? what is the disadvantage/risk in doing something like that, any alternative/recommendation?
Hey Scott, any chance you'd share a link to the code for this? I work at a science center and I want to game out an activity where students can shine a light at this with the goal of getting a certain output. I'd use this activity to teach 4th graders about how fireflies find mates.
Fourier Transform Equation Explained So, it's simple... but don't ask simple questions. It's vague, it's not complete... OMG, shoot me now. And the github link doesn't work... 404. Good job!
Can you please explain the concepts in *layman terms? *a person without professional or specialized knowledge in a particular subject It's great that you know what you're talking about. How long did it take you to fully grasp and implement these ideas? Right... so I'm here trying to follow your explanation. Not having had the same experiences. What's my point of reference? What do you and I, or what does your general audience and you have in common? Almost anyone can picture and even draw a wave. Okay, that's a start. Just about everyone who's been through high school has seen a cartesian plane. Great, so now we're cooking. Can you describe sound using a wave on a cartesian plane? Can you tell me how frequency works? Can you tell me as a math formula? Now can you explain how the computer interprets the data generated from the microphone? Is it simple pulses that are turned into digital information? Time + frequency = ? Pict vs note vs tone? Are there classes you want to point out that handle audio in Unity? What elements make up this formula? Instead of clarifying what you're doing you're just mentioning parts. But someone who doesn't understand the overall way this works, or someone who doesn't have a point of reference, doesn't know how to put all this together to get the results they want. Can you please change your approach?
a great video. I have a few Karda devices A large amd a credit card size/ they use a coin battery to reduce size. also, any ideas on their Elec odes without wires - what to use for DIY. thanks for your great work. I also want to transmit the signal short distances over 433 devices. will try to change the signal with the Arduino plotter readings.
