So I recently got this esp32 s3, upload, wifi stuff works but the inbuilt RGBneo pixel doesn't work idk y. I'm not a problem at this. I have tried many different sketches and also different pins. Still nothing
I just got the nrf24l01, the antenna version, and I took a glance and noticed so many dots. I'm assuming they are all vias but is having so many of them normal or is it some sort of defect. I have the normal nrf24s without the antenna connector and they don't have so many vias.
So basically I got 7787 rank kcet, wanted ece but no chance so I also put ete and eie. Last year the cutoff for eie first round was at around 5k this year it dropped to 3.6k. last year the final round closing rank was 15k. This year we don't know obviously. Do you guys think i still have a chance to get atleast eie? The cutoffs for almost all branches have dropped. Am I cooked 🥀
Hello guys I wanted a laptop for college cuz I don't have one and my current pc is garbage. I got a deal for a dell precision 5680 for 1.1lakh.
The specs are:
i7-13700H vpro
Rtx ada 2000 8gb
16gb ram
512gb SSD
4k display
I am considering this because my dad's company uses dell precision laptops a lot. My dad has a precision 5550 which is quite old now and still works strong. I'm going to be doing cad and solidworks (designing not just for college work). Not going to be gaming much.
Is this a good one?
I need a laptop for college, gonna use solidworks, fusion and play some games here and there nothing too crazy. I don't want serious problems to occur at least for 3 years. The strix has better display and specs for not too much, the intel version of the g16 apparently gives good battery life on igpu.
So how much good has the strix or tuf done for you? Please let me know.
Hello guys , I'm a newbie to analog electronics, I built a headphone amp using ne5532 and made some prototypes on zero pcbs. Then to make it permanent I got it printed. It works great and especially consistent on it when it is powered via battery or wall adapter. But since you get pcbs in multiples of 5 I gave some to my friends and one of them wants it to be powered via usb which is a very convenient solution for power. But as soon as I power it through usb there is that continuous noise and all rubbish. I tried adding all sorts of capacitors and didn't do any good.
This is what I observed:
Power input : PC usb , audio input same pc = all that junk
Power input : PC usb , audio input phone = clean sound
So I'm guessing it's ground loop issue?
Please enlighten and also some cheap solutions.
I wanted a headphone amp for a project, so I ordered 5 custom made PCBs for it because you can order PCBs only in increments of 5. So far I have sold 3, keeping one and one more to sell. If more people want it I can order more for you guys.
Why use it?
Basically most of the motherboards in people's PCs don't give a strong output to your headphones. When you increase the volume, it does not pull the gain for all the bands properly, because some frequencies especially the sub bass and bass need more juice to be heard properly. So my headphone amp fixes it by giving your headphones/earphones the juice it needs. It can run from a wide band of input voltage from 5-18volts, preferably 9v because that's more than enough, best if you use a pc because you can connect it to power the whole day and just leave it pn play whatever you like whenever you want.
My electornics experience:
I'm still a noob at analog electronics, but I still have a taste for it since I started using arduinos, esps and now teensies as a serious hobby since 7th grade, so I am not selling you guys garbage.
Selling it for ₹1000, if you want an adapter for it another ₹200. If your interested dm me.
So I had ordered some stuff from robu, and uptil now they used to send the parcel using blue dart, but this time they sent it through delhivery. The parcel apparently reached Mangalore on 21st Sunday and it's still over there. It's been 9 days since I ordered it. On google, the delhivery store says it's temporarily closed.
I called up the guys at robu and told them to use a different service next time but for now they can't do much.
Any suggestions on what to do?
These are the books:
Arihant trigonometry
Arihant differential calculus
Arihant coordinate geometry
Hc verma part 2 physics book (2019)
N avasthi physical chemistry
N avasthi physical chemistry (neet edition)
Hc verma part 1 physics book
Cengage inorganic chemistry p1
Cengage inorganic chemistry p2
GRB organic chemistry
DC pandey mechanic
Class 11 part 1 and 2 ncert physics text books
MS Chouhan organic advanced problems
CET/Comed-k chemistry book
Arihant Neet objective physics vol1
​
For all jee books 5k and those neet books ₹400
I am in mangalore and if anyone wants these books dm me.
The whole bundle excluding neet books will be ₹5000. The other neet books for ₹700.
Arihant trigonometry
Arihant differential calculus
Arihant coordinate geometry
Hc verma part 2 physics book (2019)
N avasthi physical chemistry
N avasthi physical chemistry (neet edition)
Hc verma part 1 physics book
Cengage inorganic chemistry p1
Cengage inorganic chemistry p2
GRB organic chemistry
DC pandey mechanic
Class 11 part 1 and 2 ncert physics text books
MS Chouhan organic advanced problems
CET/Comed-k chemistry book
Arihant Neet objective physics vol1
I decided to not go to mit but i already paid 10k for the counselling. If I don't take a seat will mahe refund my 10k ?
What are is this IC and can i use it for my projects?
I just finished building my second version of my headphone amp.
I got the basic circuit design from here, https://www.instructables.com/Make-a-Headphone-Amp/ .
So the initial design had a voltage divider using two resistors, but for this one i used another ne5532 to make a buffer. I added two pull down resistors to avoid floating inputs which was a problem with my first amp. Then i also added 10k resistors at the output to reduce the pop in my iems when i first connected them to the jack. The pop intensity has reduced but it still has a louder pop than when i connect the iems to my pc jack. How can i reduce the pop?
And if you guys think there can be some improvements made please let me know.
Also please tell me if this is overall a good design or not, this is my 3rd time seriously making a project that i want to be using daily.
The first picture shows you the headphone amp part. It is seperated from other parts of the project like the teensy etc, so this amp gets its own power. The ground of the teensy and the amp are not connected. I am using the pcm5102 dac to output the audio, I have also used the uda1334 for this very project but I heard that the pcmis better so I used it. And the following problems occur with both of the dacs.
Here is the problem I'm facing:
I connect power and my eaprhones and there is a slight noise, probably because the wires move and stuff but that's fine. The main problem is that when I connect the teensy to my pc so that I can actually hear stuff the amp starts ringing (somewhat like motorboat) , but when I disconnect the teensy it goes away. When I connect the amp to my phone while the teensy is not powered there is only that hissing and no ringing.
Then what I did was I connected the output of the pcm to my other amp I built (3rd picture) and guess what there is no ringing. That amp outputs fine although it has some noise that is just because of poor grounding or loose connection.
Hello everyone, I have been trying to get my hands on the opa1612 and the buf634 ics but I couldn't get anywhere. I can get the opa1602 from robu, the predecessor of the opa1612. I saw an advertisement of mercury electronics, based in Mumbai and I asked them if they had what I wanted and they said they did. So i wanted to ask if anyone has bought from them and are they legit? Their chip mart website doesn't show the ic I want.
Hello guys, I just finished the audio part of my project, built a headphone amp using ne5532. I copied the circuit diagram of a cmoy circuit from instructables. The audio works great but when I connect them to the speakers, I can hear very low static hiss. How can i remove that?
This is actually the second time I'm doing this circuit on this very PCB. The first time I did it, there was only bass outputting and no higher frequencies. Everything sound muffled. I wasn't able to figure out the problem and still don't know what the problem was. If you guys have any idea please let me know, I will keep it in mind for my future projects : )
Hey everyone, been soldering for a long time but still looking for any improvements I can make. I use a 25w soldron iron nothing special. How is it?
I just finished the basic working of a 6 band equaliser with one volume knob using rotary encoders. So when I connect the teensy to my pc, the pc recognizes the teensy as a midi so that's fine but there is no audio output until and unless I move 5 of the rotary encoders responsible for controlling gain of each frequency band. When I tried using a very simple code, just outputting audio coming in, there is no delay in the output. When I say this I don't mean lag, I mean that until I move 5 knobs there is literally no output. Can it be by any chance an os bug cuz I'm on linux xfce.
Code is here : https://gist.githubusercontent.com/NandoBhan/e790487c76d5d51056b3952460465a41/raw/
Well I'm learning to drive and my left leg wasn't cooperating. The initial reversing went smooth but after just a fre minutes my left leg started to tremble on the clutch pedal. I wasn't too nervous and my right leg was completely fine moving smoothly. Will the trembles go away the more I practice?