First in the world hands-free Otherside communication device! You need only the board, spirit or ghost don't need to move the ouija anymore. Symbols will light up from the inside so you will be able to read your messages and spirit or ghost just need to turn on a red bottom entry LED. Two MEMS microphones allow your interlocutor to clearly hear your questions. WiFi connectivity gives you an opportunity to "dial" without a Medium anytime anywhere. And it has Bluetooth as well, because: "Everything is better with Bluetooth"! This board is powered by a single 10440(AAA) LiFePO4 battery that gives you up to 2 hours of seance. Designed by Vasyl Skral

IMPORTANT NOTICE: Hey, I opened editing permissions and this doc is broken, see the frozen version here: https://www.flux.ai/markwuflux/on-air-markwu2001-remix-r1-backup-freeze-0b49 R1 changes: -Changed LED part to Red LEDs -adjusted resistor value of buck converter -Changed source for USB-C Connector -Removed exposed soldermask on buck converter with negative soldermask expansion -Order with black soldermask Modified by markwu2001: - Adjustable Brightness, - 85-90% Drive Efficiency - <5W Operation (Can use 5V 1A Plug) This project can be purchased from LCSC Original Description: Daddy's second circuit board. A sign to let my wife know when I'm on a call. Activates with a slide switch and is powered by USB-C.

Design a circuit that detects the presence of the infrared signal. The circuit should light a red LED when infrared signal is detected otherwise it should light a green LED. You may use NPN transistors, IR LED, Photodiode, Red LED, Green LED and a rectifier diode.

R2 w Thread changes: -Moving to Letter Modules for ease of design -Adding MGM210L for Matter on Thread On/Off and intensity control -Shifted A and R letters closer to fix Kerning -Optional: Add unpopulated AA Battery Holder for battery option R1 changes: -Changed LED part to Red LEDs -adjusted resistor value of buck converter -Changed source for USB-C Connector -Removed exposed soldermask on buck converter with negative soldermask expansion -Order with black soldermask Modified by markwu2001: - Adjustable Brightness, - 85-90% Drive Efficiency - <5W Operation (Can use 5V 1A Plug) This project can be purchased from LCSC Original Description: Daddy's second circuit board. A sign to let my wife know when I'm on a call. Activates with a slide switch and is powered by USB-C. #template #arduino-matter

R1 changes: -Changed LED part to Red LEDs -adjusted resistor value of buck converter -Changed source for USB-C Connector -Removed exposed soldermask on buck converter with negative soldermask expansion -Order with black soldermask Modified by markwu2001: - Adjustable Brightness, - 85-90% Drive Efficiency - <5W Operation (Can use 5V 1A Plug) This project can be purchased from LCSC Original Description: Daddy's second circuit board. A sign to let my wife know when I'm on a call. Activates with a slide switch and is powered by USB-C.

This is a WiFi to Infrared (IR) gateway reference design leveraging an ESP32-S3 microcontroller for WiFi connectivity. It also incorporates a Type-C USB interface for data and power, 3 LEDs (red, green, & IR), and voltage regulation. It facilitates wireless control of IR devices, suitable for home automation projects. #referenceDesign #edge-computing #espressif #template #IR #project #reference-design

Through-hole NE555 astable circuit that blinks a red LED about once per second from a switched 9V battery.

Hand-solderable 9V battery powered 555 timer circuit that blinks a red LED once per second through an on/off switch.

I want make a board that trigger a green and red LED with three wire, 0V, 24V and output of proximity switch. but i want output wire remain 0V when not connected.

Hand-solderable 9V battery powered 555 timer circuit that blinks a red LED once per second through an on/off switch.

Hand-solderable 9V battery powered NE555 astable circuit that blinks a red LED about once per second through an on/off switch.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable oscillator, on/off switch, and through-hole components.

Hand-solderable 9V battery-powered 555 timer circuit that blinks a red LED at about once per second through an on/off switch.

Through-hole 9V battery-powered 555 timer circuit that blinks a red LED approximately once per second using an on/off switch and hand-solderable components.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer in astable mode, with on/off switch and required decoupling/bypass capacitors.

Through-hole 9V battery-powered 555 timer circuit that blinks a red LED about once per second through an on/off switch, designed for easy hand soldering.

Hand-solderable 9V battery powered 555 timer circuit that blinks a red LED once per second through an on/off switch.

Hand-solderable 9 V battery-powered 555 timer circuit that blinks a red LED approximately once per second through an on/off switch.

Through-hole 9V NE555 astable timer circuit that blinks a red LED about once per second using a battery and on/off switch.

Hand-solderable 9V 555 timer circuit that blinks a red LED once per second through an on/off switch.

9V battery-powered 1 Hz red LED blinker using a through-hole 555 astable timer, on/off switch, and hand-solderable components.

Through-hole 9V NE555 red LED blinker circuit with on/off switch

9V battery-powered 555 astable timer circuit that blinks a through-hole red LED at about 1 Hz through an on/off switch.

Through-hole 1 Hz red LED blinker powered by a 9V battery through an on/off switch, using an NE555 astable oscillator on a 50 mm x 50 mm 2-layer PCB.

This project involves designing a portable device that can inject a 1kHz sine wave signal into a 100V audio line to detect short circuits. The device should be compact (around the size of a smartphone) and include LED indicators to show the status: a green LED for normal operation and a red LED for short-circuit detection. The device will be powered either by a switching power supply or rechargeable batteries.