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Colorful Glittering Five-Pointed Star Shaped Water Light Flashing LED Lamp DIY Kit with Acrylic Shell Colorful Glittering Five-Pointed Star Shaped Water Light Flashing LED Lamp DIY Kit with Acrylic Shell Description: It is an LED flashing DIY kit, issued a dazzling color, if it is with the music together, the audio-visual effect will be better. Parameters: 1>. Operating voltage: DC4.5V-5V; 2>. Power supply mode: 3pcs AA ... $7.99
$9.99
SKU: 12489
$7.99
$9.99

LCUS-1 5V USB Relay Module CH340 USB Intelligent Control Switch Relay Module LCUS-1 5V USB Relay Module CH340 USB Intelligent Control Switch Relay Module 1. Description: 1>. Controller Chip: onboard high performance microcontroller chip 2>. Control Chip: onboard CH340 USB control chip 3>. LED Indicator Lamp: onboard power LED indicator lamp and relay status LED indica... $6.28
$7.85
SKU: 12488
$6.28
$7.85

RGB LED Light Modulator Programmable PWM Controller for Arduino RGB LED Light Modulator Programmable PWM Controller for Arduino 1. Description: 1>. Onboard high performance microcontroller chip 2>. Onboard three-channel MOSFET tube, respectively control RGB LED lamps  3>. Onboard power LED indicator lamp and reset key  4>. On... $3.89
$4.99
SKU: 12486
$3.89
$4.99

23

DIY Energy Saving Lamp Kit 120pcs White LED Lamp Bulb DIY Kit Module AC 85V-277V E27 Interface DIY Energy Saving Lamp Kit 120pcs White LED Lamp Bulb DIY Kit Module AC 85V-277V E27 Interface Description: Please confirm that the lamp can be lit and then install the lampshade, because the lamp cover is not easy to remove it once installed. LED energy-saving lamps for its energy saving, environmental protection, long life a... $5.08
$6.35
SKU: 12480
$5.08
$6.35

AC to DC Adjustable Constant Current Voltage Regulator Power Supply Module DIY Kit AC 15-24V to DC 0-30V AC to DC Adjustable Constant Current Voltage Regulator Power Supply Module DIY Kit AC 15-24V to DC 0-30V Description: Adjustable DC regulated power supply Parameter: Parameter Value Model POW-CC Input Voltage 24V alternating(max) In... $6.20
$7.75
SKU: 12479
$6.20
$7.75

Audio Spectrum Indicator DIY Kit 8x4 Colorful SMD LED Soldering Practice Board Level Indicator Kit Learning Suite Audio Spectrum Indicator DIY Kit 8x4 Colorful SMD LED Soldering Practice Board Level Indicator Kit Learning Suite Description: An audio indicator that bounces with music. Parameter: Parameter Value Model ASD-84S Operating Voltage DC 5V Work ... $3.99
$4.99
SKU: 12478
$3.99
$4.99

Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display 1Hz-150Khz 3.3V-30V Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display 1Hz-150Khz 3.3V-30V Description: PWM output, you can set the frequency, duty cycle; Frequency is divided into four ranges, automatic switching: 1>. XXX (no decimal point): the smallest unit is 1Hz, the value range of 1Hz ~ 999Hz; 2>. X.XX (dec... $3.66
$4.69
SKU: 12477
$3.66
$4.69

23

TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control for Arduino AVR TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control for Arduino AVR 1.Description:  The power supply of this product is wide voltage (3.0V ~ 30V), 3.3V system and 5.0V system compatible, 3.3V and 5.0V signals can match. This product with a terminal block and silicone wire, direct wiring use, all... $2.88
$3.69
SKU: 12476
$2.88
$3.69

Adjustable Automatic Step Up/ Step Down Power Supply Voltage Regulator Module DC 5-30V to DC 0.5-30V Adjustable Automatic Step Up/ Step Down Power Supply Voltage Regulator Module DC 5-30V to DC 0.5-30V Description: 1. Can be boosted, but also buck, the output voltage 0.5-30V arbitrary adjustment, limiting current 0-4A arbitrary adjustment; can be used for LED constant current drive, battery charging and other constant current occasio... $3.50
$4.49
SKU: 12475
$3.50
$4.49

Automatic DC-DC Step Up Step Down Boost Buck Converter Power Supply Module Voltage Regulator Module 5.5-30V to 0.5-30V Automatic DC-DC Step Up Step Down Boost Buck Converter Power Supply Module Voltage Regulator Module 5.5-30V to 0.5-30V Description: 1. Wide voltage input 5.5-30V, wide voltage output 0.5-30V, both boost can also buck, such as you adjust the output voltage of 18V, then the input voltage between 5.5-30V casually change, will be constant output 18V; and t... $2.61
$3.35
SKU: 12474
$2.61
$3.35

23

433MHz Wireless Transceiver Module LoRa Communication HPD14-433 SPI Interface RSSI AGC 16x16x2mm 433MHz Wireless Transceiver Module LoRa Communication HPD14-433 SPI Interface RSSI AGC 16x16x2mm Feature: 1>. Digital RSSI Function 2>. Auto Frequency Correction 3>. Auto Gain Control 4>. Radio Frequency Awake Function 5>. Low Voltage Detection And Temperature Sensor 6>. Fast Awake And Frequency Jumping... $5.24
$6.99
SKU: 12469
$5.24
$6.99

26

433MHz SX1278 Wireless Transceiver Module LoRa Communication SPI Interface 1.8-3.7V 16x12.5x2mm 433MHz SX1278 Wireless Transceiver Module LoRa Communication SPI Interface 1.8-3.7V 16x12.5x2mm Feature: 1>. Digital RSSI Function 2>. Auto Frequency Correction 3>. Auto Gain Control 4>. Radio Frequency Awake Function 5>. Low Voltage Detection And Temperature Sensor 6>. Fast Awake And Frequency Jumping... $5.24
$6.99
SKU: 12468
$5.24
$6.99

26

Wireless Transceiver Module 433MHz GFSK Security Alarm Board SPI Interface 16x16x2.7mm Wireless Transceiver Module 433MHz GFSK Security Alarm Board SPI Interface 16x16x2.7mm Feature: 1>. Digital RSSI Function 2>. Auto Frequency Correction 3>. Auto Gain Control 4>. Radio Frequency Awake Function 5>. Low Voltage Detection And Temperature Sensor 6>. Configurable Data Packet Process... $3.56
$4.75
SKU: 12467
$3.56
$4.75

25

DC 5V Infrared Flame Sensor Module Suite Warehouse IR Alarm Kit Electronic DIY Kits DC 5V Infrared Flame Sensor Module Suite Warehouse IR Alarm Kit Electronic DIY Kits Description: This circuit adopts resistors, capacitors, LEDs, potentiometers, triodes, flame sensor, buzzer, double operational amplifier LM358, double D trigger 4013 integrated chip etc. Operating voltage is DC 5V. Parameter: ... $2.12
$2.65
SKU: 12464
$2.12
$2.65

NE555 Analog Rain Drop Circuit Suite Bistable Simple Hypnotic Module DIY Kits Electronic Making NE555 Analog Rain Drop Circuit Suite Bistable Simple Hypnotic Module DIY Kits Electronic Making Description: This circuit can simulate rain drop sound “DADA”, and the time interval is adjustable. When the interval is long, it functions like hypnosis. So it is also called simple hypnosis circuit. Parameter: 1&... $1.88
$2.35
SKU: 12463
$1.88
$2.35

NE555 Electronic Organ Module Suite Bistable Oscillating Circuit DIY Kits NE555 Electronic Organ Module Suite Bistable Oscillating Circuit DIY Kits Description: This circuit scale can generate different sounds, and different keys correspond different scales. Its principle is IC555 connected as an oscillator, and the vibration frequency depends on the resistor value (R1-R10). The... $2.20
$2.75
SKU: 12461
$2.20
$2.75

4-Bit 0.56 Inch LED Digital Tube RS485 Display Screen Module PLC Communication DC 7-36V 4-Bit 0.56 Inch LED Digital Tube RS485 Display Screen Module PLC Communication DC 7-36V Feature: 1>. Easy to install, it can be embedded by opening a hole on the panel 2>. Built-in switch power switch, wide input voltage range, high conversion efficiency; and it can operate for a long time 3>. Reverse connect... $11.30
$14.49
SKU: 12459
$11.30
$14.49

23

Multivibrator Oscillating Flashing Lights LEDs DIY Kit Funny Flash Circuit Multivibrator Oscillating Flashing Lights LEDs DIY Kit Funny Flash Circuit Operating Principle: Once power on, the two triodes will compete to connect. Due to the difference of components, only one triode can be connected first. If VT1 is connected first, then VT1 collector voltage will decrease, LED1 will ... $1.19
$1.49
SKU: 12458
$1.19
$1.49

Analog Computer Program Control Bell DIY Kit 48Bit Adjustable Electronic Alarm Clock Analog Computer Program Control Bell DIY Kit 48Bit Adjustable Electronic Alarm Clock Description: 1>. This circuit has 48 channels, and it can set alarm time independently and analog computer controlled bell. If remove the buzzer and add a relay, it can control the bell ring, which functions like computer contr... $3.19
$3.99
SKU: 12457
$3.19
$3.99

DIY Kit DC 12V Typical Division Voltage Bias Single Tube Low Frequency Amplifier DIY Kit DC 12V Typical Division Voltage Bias Single Tube Low Frequency Amplifier Description: This circuit is a typical partial bias bias, emitter negative feedback of the common-emitter amplifier circuit, and then a wide range of applications in a wide range of circuits. Application: 1>. Component iden... $1.48
$1.85
SKU: 12456
$1.48
$1.85


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