1. OmarTPX

    Seeking Technical Expertise for 5GHz MIMO OFDM Transmitter/Receiver Development

    Hi. My name is Omar i'm new here i hope i solve my concern here. I'm tasked with creating a 5ghz 2x2 mimo ofdm unlicensed wifi transmitter and receiver circuits that able to transmit a 2gb or more video file size with max power consumption of 250mW. i'm totally new to this stuff, i did lot of...
  2. D

    Choosing Capacitors for Noise Filtering in Project: Advice Needed

    Hello everyone, I'm currently working on a project that involves controlling a servo motor with an Arduino, potentiometer and displaying servo angle on an LCD screen. I have very little experience when it comes to building electrical circuits. The entire circuit operates on a 5V DC battery. I'm...
  3. Akshay447

    Arduino nano wireless car Current leakage

    Wireless remote control car. Motors turn on upon connecting batteries to the circuit (Reciver), while remote controller (Transmitter) turned off (Not connected any batteries). Not a slightest clue of what to do in this situation, any help would be greatly appreciated.
  4. G

    What sensors do these 'air' drumsticks use?

    So there are many electronic 'air' drumsticks in the market, such as Aeroband, Freedrum, Senstroke, Aerodrums, etc. I wanted to know what sensors do these use or might have used to do what they do. For example, the Aeroband Pocketdrum have a pair of drumsticks with sensors, and a pair of foot...
  5. Aikju (Isaac)

    How to make my delay relay circuit latch?

    I have bought this Delay Relay module off of amazon. I am using it to make a circuit that will act as a latching relay with a delay for a 12V power source. The circuit should work as follows: There is a switch to activate the relay. When activated, the relay will remain on until the 12V power...
  6. S

    IoT flood detection and avoidance project

    Aim The first aim of this project is the design and implementation of a system that detects rain, automatically triggers an alarm or buzzer and switches on an electrical socket which turns on a water pump. The second aim is the design and implementation of a system that eliminates or lessens the...
  7. T

    Help with solar fountain design

    Hi Im a complete novice here, very new! My history is Im a paramedic but recently diagnosed with autism (lots of social issues for me!). But I often get an intense interest in certain areas (autism!). What I really want to do is try and build a few low voltage electronic circuits. 1/ A...
  8. C

    Need help with simple project wiring 5 pin LED latching switches together for instrument cluster bench tester

    Basically I’m trying to build a simple car instrument cluster bench tester/simulator that I can use from home. It consists of three 5 pin Halo LED switches. (Tester on/off, Backlight, Turn signals) a small voltmeter gauge 12v power supply. Automotive pigtail connector. The switch on the...
  9. alexbez


    Hey guys, I am trying to diagnose what the issue is with my Kurzweil CUP2 digital Piano The piano displays no sign of life besides a red on led. LCD screen does not display anything Buttons do not seem to do anything(there is a little red light above each button that indicates the "mode" it is...
  10. IloveGraceKelly

    Project feasibility - Police Speed Gun

    Hi everyone, I am currently a rising senior majoring in computer engineering. I wasn't able to secure an internship this summer so I wanted to come up with ideas for projects. One of my project ideas is creating a police speed gun that uses LIDAR to measure the speed at which a vehicle is...
  11. blink13

    Seeking Advice for Three Stage Amplifier Project: Improvements and Real-Life Feasibility

    Hello, I am a student tasked to build a working amplifier, I do not know much of what I am doing. I've got a three-stage configuration that consists of a single ended differential input stage, a common-emitter VAS stage, and a Sziklai pair output stage. It's supposed to be a 15W amplifier to a...
  12. Nikson420

    Wholesale, Good price??? or scam?

    Just found this on ali they said its wholesale action and they are in hurry to sell them all. Its that normal price or its really cheap? Please check - https://.aliexpress.com/e/_DBQRbZt I need around 100pcs. Any suggestions is welcome. Thanks!
  13. BerserkSin

    Help Needed- Digital Clock using ICs cd4060 and cd4026

    I found a blog that shows how to build a digital clock using ICs cd4060 and cd4026. https://danyk.cz/hodiny_en.html This is the site. I have checked if my ICs are working and they are. The only output I'm getting is the every 7 segment display shows 0 and the the two decimal points blink every...
  14. DCJW

    BJT Multistage Amplifier (Cascaded)

    I had been trying to create a BJT Multistage Amplifier circuit which had a total voltage gain of -40. The problem is whenever I tried to calculate the value starting from the total voltage gain it always goes wrong and totally different comparing the simulations and calculations. Anyone can help...
  15. Sheilarohr

    Complex circuit

    We are suppose to make a complex ckt with a 9v battry, a buzer and 2 lights. MY battery keeps heating up. Should i try a lower volate bulb?
  16. Swaysceptile

    How do I combine these two electronic circuits into one schematic (for project)?

    I started the basics of PCB and doing schematics around 6 weeks ago in my Computer Engineering Drafting and Design class. We used EasyEDA online tool to create the SCH and PCB for our assignments/activities. Our project now is to combine the circuits that we have made before into one system so...
  17. A

    Stumped on what to do on my digital clock project.

    Hey everyone, I recently enrolled in a computer science major, and one of the subjects has to do with circuits, memory, the cpu, logic gates etc. The problem is, I have absolutely 0 experience on such things, and now with covid and learning from home I haven't really grasped much of my...
  18. busevaran

    Trying to control a motor speed with a PID circuit.

    Hi everyone! I'm Buse. I'm trying to control a motor speed for a personal project. You can find the schematic of the circuit I found on a book. This circuit works with only the PID parts contrcuted. My problem start when I add the other parts. For example, U1 opamp (top left) is supposed to...
  19. Gallant74

    Circuit diagram, DIY keezer build

    Can someone help me build a circuit that is connected to a 115vac 60hz fridge compressor that runs ITC-1000f temp controller, i want to power a circuit properly with out killing the equipment I am willing to purchase any Amazon part! I have LM338t voltage regulators, I am inclined to install but...
  20. D

    Defining DFLOP output

    Hello, I would like to know how do I configure the DFLOP with + -15 V or whatever other voltage. I tried several things but it still has + -1V.