Hello! I am trying to recreate and add on to the circuit and project in this youtube video: https://www.youtube.com/watch?v=ekpX65DKVXM. I want to make a circuit that attaches to this where the potentiometers are not connected to the servo circuit until you press a button once you think you've gotten the potentiometers in the right position. When you press the button, the servos should move according to how the potentiometers are set up. It would count wrong attempts so if you get the combination wrong 3 times in a row, a red light turns on and you won't be able to try for 15 seconds because of a timer. (The red light would turn off when the timer is up.) How could I make this? I am new to this, so let me know if any of this would be too complicated or impossible and needs to be changed. Thank you.

NOTE: For this class, we are not allowed to use arduinos yet.

Total beginner here! why is my circuit not working? I probably made a dumb error, please tell me thanks ! :))

https://preview.redd.it/bn9tk99ely2e1.png?width=648&format=png&auto=webp&s=06af3a6df9ea6bf999a5fae05c67a07d0d39408d

Hey all,

I’m getting back into electronics and want to build a solid $500 setup, mostly for solderless projects to start. I’d love recommendations for:

Essential tools (multimeter, breadboards, etc.)

Components (resistors, capacitors, transistors, ICs, etc.)

Kits or platforms (Arduino, Raspberry Pi, etc.)

I’m looking for beginner-to-intermediate project ideas, too—something to build skills and stay motivated. I was a very, very fast learner in a vocational high school class, so I’m ready to dive in.

Thanks for the help!

I’m looking to get into electronics at home. I have experience from school but I’d like to be able to tinker at home creating simple circuits, and logic circuits. And I’m looking for good and affordable options to get started. Are there anyways to do this without needing an expensive function generator and oscilloscope? Any good packages that include a raspberry pi or arduino that isn’t too complex to get set up? Also wouldn’t be opposed to be able to run simple programs in say python, c, or java to control leds or an lcd display. Thanks for the help!

The bottom IC is an xor-gate. The top one is an and-gate. When I press both buttons I would want the current to flow trough the and-gate and then trough the LED, like the green lines. But instead the current flows to the xor-gate and then to ground (I think!). How can I solve this problem in order to have the current flow trough the and-gate?

I have a budget of 100 dollars i need to buy a intermediate breadboard project for school something like a breadboard car, air piano, soil mosture detector, clock links would be appreciated ty

I bought a holder device from Adeept to mount my Arduino and a breadboard to keep them together. however, the slots on the device are rectangular and the tabs on the breadboard are wedge shaped.

Is it necessary to specify the shape of the tabs when you order the breadboard?

Got a project that will have photosensitive film design over paint. Is there a good way to remove the paint but not the photosensitive film?

Would a citrus based cleaner dissolve the film? Looks like it removes paint.

Me and a team of high schoolers are making street lights which work based on light sensors. We ended up buying a mini breadboard because we couldn't solder into pcb board. Is there any way to make an ldr sensor with a BC547 transistor, 100k ohm resistor, ldr sensor, 390 ohm resistor and a 9v battery? Now the project is due tomorrow and we cannot find any way to figure this out.

Is it possible?

I meant to add this on my previous post