Apr 1, 2023 · Pretty much the title, what's wrong with this schematic, what improvements could be made, etc. This is an esp32 board for general led projects, whether they are digital or analog leds. It can take up to 24v, and drive 5v leds even with that high voltage, at up to 15a.

Aug 21, 2022 · 12 votes, 24 comments. true. No mounting holes could be a problem. Something to consider, if you plan to use this as a general purpose light controller (i.e. for room lighting) and you think you might use the GPIO0 button to toggle the lights... add an always-on power LED near that button so you can find the damn thing in the dark.

Jun 17, 2024 · My idea was to control brightness of LED all 40x red on same time and all 40x yellow independently. So a connection between 20x of left and 20x of right is needed. Were used 10ohm resistor between output pin of uC and 10k resistor for pull-down. Regarding LEDs circuits, I designed a 20x LED schematic which will be printed twice.

Jul 31, 2022 · Moved CapsLock LED and added pot to adjust brightness Updated power sub-system to more accuractely reflect STMicro datasheet Moved key/LED matrix to seperate sheet -- that stuff is boring COMPLETE REROUTE OF PCB (low-side control necessitated) LED Parameters/Calculations: (Vs - Vf) / R = If (5.0v - 3.2v) / 330 ohm = 5.45mA

Aug 9, 2021 · Edit2: Schematic updated to include logic level shifter and confirmed all ceramic caps are either X5R or X7R, capacitor size changes, capacitor voltages stated & power LED moved to output of regulator.

Oct 23, 2022 · Then these outputs are connected together via 60k resistors (kind of chose this value randomly for the simulation!) which then drives an LED through an NMOS. Coupling the outputs of the four oscillators (along with a smoothing cap) creates the pseudo random spikes/dips in the voltage (and thus LED brightness) that sort of simulates a flickering ...

Jul 31, 2022 · I would like to receive your feedback on my schematic and PCB for LED Strip Controller Board called Universal LED Controller. The main purpose is to be able to easily control LED Strip of various kinds. This includes 12V RGB Strips with common anode and individual cathodes and 5V addressable LED Strips like the WS2801 and WS2812b.

May 4, 2024 · Would be easier and cheaper to just get a LED that has a flashing chip built in for a few dollars. That circuit above does not look like it would work. They used to do the LM3909 IC for this as well, but that is quite dated now and you can just get the embedded flasher chip inside the LED. Also you can use the trusty 555 IC to do this.

It started with a Halloween LED stick figure project a couple of years ago and nine iterations later, it's available for everyone. You can read the story here. Key Features: USB-C Power Delivery, or external power: Supports up to 36W via 3A at 12V, or 15W via 3A at 5V. You can easily switch between 5V and 12V using the on-board DIP switch.

Oct 23, 2021 · This community is for users of the FastLED library. A place to discuss and share your addressable LED pixel creations, ask for help, get updates, etc. Help your fellow community artists, makers and engineers out where you can. Remember that everyone has different levels of experience and skill sets.