5.5" Silent Analog Alarm Clock Non Ticking, Gentle Wake, Beep Sounds, Increasing Volume, Battery Operated Snooze and Light Functions, Easy Set, Black (Best for Elder)
Large analog Alarm Clock Big and intuitive number display on a white dial enable you see the time across the room. Ascending Beep Alarm Ascending four beep alarm volume increases in four stages and lasts for 50 minutes until the alarm is turned off or snooze bar is depressed. Built In Nightlight Simply press the front button to activate for night viewing. Easy to Read Display, Easy to Setup Black numerals on a white dial enable you to see the time Easy. Easy to set up, One knob to set time and another to set alarm time . Made By High Quality Hard Plastic Made by high quality hard plastic ,durable and long last use. Package 1* Tinload alarm clock 1* User manual
SUPERNIGHT LED Light Strip Dimmer, DC 12V-24V 30A PWM Dimming Controller for Dimmer Knob Adjust Brightness ON/OFF Switch with Aluminum Housing, Single Channel for 5050 3538 Single Color Tape
Features: *【Full range dimming capability】0%-100% fully dimmable, easily adjustable brightness to suit different needs and preferences with the rotatable knob *【Long Lasting】High quality aluminum housing provides excellent anti-corrosion and heat-dissipation capacity and ensures a long-lasting performance even in harsh environments *【Flexible Usage】Compatible with DC 12V-24V MAX 30A LED light application, single channel dimming controller for single color LED strip lights *【Protection For LED】PWM digital dimming avoids rush current and protects your LED lights *【Esay Installation】The screw-in input and output terminals, pre-drilled mounting holes make the installation literally a breeze Specifications: Dimension: 3.37*2.41*1.39(in) Working Voltage: 12V-24V Power: Max 30A Material: Aluminum housing Package Including 1 x Dimming Controller
TronicsPros DC 12V-24V 3A LED Strip Dimmer Switch PWM Dimmer Controller DC Jack Adapter Connector for RGB and Monochrome SMD 5050 3528 2835 5630 LED Strip LED Tape LED Ribbon LED Rope LED String Light
This dimmer is widely used on DC12V-24 LED lighting devices, such as LED strip light, aquarium lighting, etc. Its control mode is knob-operated control, you could adjust light to the appropriate brightness in accordance with your actual need by simply rotating the knob. 0% - 100% dimming.Pulse Width Modulation (PWM) technology, can dim single color LED strip and any DC 12V input LED products with common anode (12v+) leads from 0% to 100%. Technical Parameters: Dimming Range: 0-100% Input Voltage: DC 12V-24V Output Current (max): 3A Output Power (max): 36W @ 12V, 72W @ 24V Working Temperatures: -4~140ºF (-20~60ºC) DC Jack Leads: 5.5mm DC Jack, 2.5" length Product Size:(L)2.5" x (W)1.25" x (H)1.25" N/W: 1.6 oz Static Power Consumption: < 1W Compatible with LED lighting devices that need 0~36W power supply at DC12V, or 0~72W power supply at DC24V. Tips: You can buy a piece of 3M tape to stick this dimmer on the wall or stick somewhere else.
PWM LED Slide Dimmer with Switch 8A (Wall Plate) 12v/24v DC
PWM Slide Dimmer With Switch 8A (Wall Plate) This is a great PWM dimmer to use with our single color flexible LED strips for 0-100% dimming control. Mounts in standard single gang switch box Uses standard decora face plate On/Off Switch Input: Wire Pigtails. Output: Wire Pigtails. Requires 12V DC input
FAVOLCANO 3pcs Mini DC 12V-24V 6A LED Strip Dimmer Switch Single Channel Inline PWM Led Dimmer controller for Single Color LED Light LED Strip LED Tape LED Rope
This dimmer is widely used on DC12V-24 LED lighting devices, such as LED strip light, aquarium lighting, etc. its control mode is knob-operated control. you could adjust the light to the appropriate lighting brightness in accordance with your actual need.Pulse Width Modulation (PWM) technology, can dim single color LED strip and any DC 12V input LED products with common anode (12v+) leads from 0% to 100%. Specification:Color: BlackSupply voltage: DC12V-24VOutput:1 channelExternal dimension: L61 x W33 x H32mmPower output(max): 72WWorking temperature: -4~140ºF（-20-60°C） Output current(max): 6AStatic power consumption: ≤1WCompatible with LED lighting devices that need the 0~36W power supply at DC12V, or 0~72W power supply at DC24V. Direction for use:To connect the load line, connect the power cord.Adopt the rotary button, its function as follows.Rotate button to the right, brightness will be brighter, when you rotate it to the far right, the brightness is greatest.Rotate button to the left, brightness will be darker, when you rotate it to the far left, the light will be turned off.Package includes:3 x FAVOLCANO Led Dimmer controller (LED strips not included)
PWM Dimming Controller for LED Lights, Ribbon, Strip, 12 - 24 Volt (12V - 24V) 8 Amp, Adjustable Brightness Light Switch Dimmer Controller DC12V 8A 96W for Led Strip Light, Electrical Dimmer Switches
Specification : Supply voltage: DC 5V-24V Output: 1 channel Product size: L89 x W59 x H35mm Working temperature: -20-60°C Output current: 8A Net weight: 60g Instructions Our dimmer is suitable for 3528/5050 strip lights. Please follow the 'in/out and +v/-v markings' clearly shown on the unit when you install. This dimmer dial will allow you to adjust your strip brightness from 0 to 100 percent with Pulse Width Modulation (PWM) circuit. When you need to adjust the light, just rotate the knob. Please select the appropriate brightness according to your actual need.
Peakeep 4 inches Twin Bell Alarm Clock with Stereoscopic Dial, Backlight, Battery Operated Loud Alarm Clock (Black)
Peakeep Twin Bell Analog Alarm Clock Classic twin bell alarm clock, this vintage style takes you back to 80's. Loud Alarm Clock and No Snooze Alarm Clock Loud alarm ringing for people who are heavy sleepers, mild loss hearing No snooze button, it can only be turned off by flipping a switch in the back, good wake up clock for people who has trouble waking up. Alarm Clock Battery Operated 1 AA 1.5V battery required (not included) The battery compartment is designed for easy installment and replacement. Tips Please select the appropriate battery and read the manual carefully before use. What's in the Box 1* Peakeep Twin Bell Alarm Clock 1* Manual 1* Warranty Card
Ulincos Touch Switch UT19T1 Stepless Dimming Switch DC 6V to 24V Blue LED Suitable for 19mm 3/4" Mounting Hole
What You Get: 1 * Touch Switch 1 * Instruction What's the Touch Switch: Touch switch, just touch it! The touch switch is rated for 7A MAX /DC 6-24V. What's the Touch Switch Used for: Most often the Stepless Dimming switch is used for lights (Such as critical lights, chassis lamp, dome light) About Stepless Dimming type: 1.The light is off when connecting to electricity. Click it (time < 550ms) once to initiate it with the light on. Click it again to let it be off. Continue to cycle. 2.The initial brightness is 100% of the maximum brightness. 3.Touch and hold it (time > 550ms) to initiate stepless dimming control. The brightness increases when touching and holding, and stays at the level when stop holding. When holding more than 3 seconds, the brightness reaches and stays at maximum level. The brightness decreases when touching and holding again, and stays at the level when stop holding. When holding more than 3 seconds, the brightness reaches and stays at minimum level. Continue to cycle. 4.Click and Holding Touch can be used anytime. There is no interference between these two functions. What's Note:*The input power need to be constant-voltage source. A constant-current source (like LED driver, Oupput: DC12-24V 300ma) CANNOT fit the touch switch! *The touch switch doesn't wo...
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LED Dimming: PWM vs Current
In this video, I demonstrate two different ways to dim an LED, along with electrical analysis of the circuits using a multimeter and an oscilloscope.
Skip to 9:39 for the bit about Arduino PWM.
3d printed lithophanes: http://www.createthis.com/products/lithophane
Here is the Arduino gist, as promised in the video: https://gist.github.com/anonymous/cfb6ff9558f754698b72
These are the products I use or mention in the video:
LED light strip (not the one in the video, but similar and less expe...
Tags: LED dimming,how to dim an led,how do led dimmer...