5pcs u

5Pcs DC-DC Step Down Power Supply Adjustable Module With LCD Display With Housing Case Specifications: Converter type: DC-DC Input voltage: 5~23V (Best voltage 20V) Output voltage: 0V~16.5V (Continuously adjustable) Peak current: 3A Mainboard size: 50mm x 30mm x 12mm(LxWxH) Display module: STN LCD LCD size: 37.5mm x 17.0mm(LxW) LCD accuracy: 1% Conversion efficiency: 95% Load regulation S(I): Voltage regulation S(U): Package included: 5 x DC-DC step-down power suppl module 5 x Transparent shell

Feature:   Onboard 2W mono amplifier (5V power supply up to 3W) can directly connected speakers (recommended with 4Ω3W speakers), 3.5mm gold-plated headphone jack can be accessed by headphones or external audio. With MicroUSB power supply interface, using mobile bank power or USB charger power supply, can also be used 3.7V lithium battery, USB 5V power supply. Support TF card (mobile phone memory card), U disk playback mode. With a speaker terminal without soldering, easy wiring.   1) Support MP3 format, power automatically play, led status turn to red. 2) Support U disk (tested with 32G), TF card (tested with 16G) playing mode, power default TF card mode, if the TF card does not exist automatically jump to U disk mode, and both devices are installed, you can manually set the playback mode, please refer to the key operation instructions.   Key operation instructions:   "Prev / V--" key: "short press" to switch "Previous" song, "long press" to switch "volume down" "Next / v ++" key: "short press" to switch "next song", "long press" to switch "volume increase" "P / P / Mode" key: "short press" to "play / pause" switch, "long press" for the U disk, TF card "mode" select "Repeat" key: "short press" for the "single / full song" cycle switch (no long press function)   Note:   1. Long press time about 2S 2. If you use U disk mode, the recommended 5V power supply, some U disk does not support 3.7V power supply.   Specifications:   Power supply range: 3.7 - 5.5V Product size: 45mm * 36mm   Package includes:   5 x MP3 Lossless Decoder Board

Buy 5pcs BGA152 BGA132 BGA136 TSOP48 NAND Flash USB 3.0 U Disk PCB IS917 Main Controller for R676.85

Buy 5Pcs SMA Connector Cable Female to uFL/u.FL/IPX/IPEX UFL to SMA Female... (TYPE: IPXTORP-SMA-K20CM) for R206.51

Buy 5pcs 10CM SMA Connector Cable Female to uFL/u.FL/IPX/IPEX RF with IPEX Connector for R307.00

Description: 1. Use aluminum alloy U disk shell to install internal motherboard. 2. The interface definition is directly marked on the enclosure. 3. 5V, 3.3V at the same time to provide external use, convenient for you to connect 5V and 3.3V target board. 4. The shell characters use laser engraving, never fade off and permanent clarity. 5. The internal motherboard with 500MA self recovery fuse, completely protect your expensive computer motherboards. 6. Red and blue double color LED indicator lamp, it is convenient for you to observe the working state of ST-LINK V2 at all times. 7. Distribution dupont wire, so that you can easily deal with the wire sequence of different target board. 8. The outer packing is made of anti-static bag and sealed pack by automatic sealing machine. It is safe and reliable and not afraid of static electricity or water. 9. Note: r ed, black, gold, green, grey, white, blue, pink color random delivery Features: 1. Support a full range of STM32 SWD interface debugging, 4 wire interface simple (including power), fast speed, work stability; interface definition shell is directly marked. 2. Support a full range of STM8 SWIM download debugging (common development environment such as IAR, STVD and so on are supported); support software version is as follows: 1) XTW LINK ST Utility 2.0 and above 2) STVD 4.2.1 and above 3) STVP 3.2.3 and above 4) IAR EWARM V6.20 and above 5) IAR EWSTM8 V1.30 and above 6) KEIL RVMDK V4.21 and above 6 and above 3. Support firmware automatic upgrade, factory firmware has been upgraded to the latest V2.J17.S4. 4. Increase the 5V power output, output I / O port are protected, not afraid of operating mistakes caused by LINK, ST, V2 damage. 5. The interface uses pure copper gold-plated 2.54 space simple ox horn socket with 20CM Dupont wire 6. Using U aluminum alloy shell to protect the motherboard 7. With data package, data contains: 1) XTW, LINK, ST, V2 driver; 2) KEIL, MDK (4.60) development environment (and other common development environment) 3) IAR, STM8 (1401) development environment (and other common development environment) 4) STVD STM8 development environment (and other common development environment) 5) A number of classic STM32 data (including a large number of examples of source code and video tutorials) 6) A number of classic STM8 data (including a large number of examples of source code and learning experience) Package included: 5 x 3.3V 5V XTW ST-LINK V2 STM8 / STM32 programmer with 20cm dupont wire

Description: Type: Decoder Board Supply Voltage: DC 5V or 12V Ohm: 4-8Ohm Dual channel audio output Operating Temperature: -30 ~ 85 ??br />Power Supply: 3.7-5V lithium battery / 5V adapter(Below 5.5V) The decoding board with 5V amplifier, apply with speaker directly Support WAV, MP3 FOMATE Supprt U disk & TF Card Support power memory Application: MP3/MP4 Player Package included: 5 x 5V 12V 3W+3W mini MP3 decoder board 5 x Remote control

Feature: Supply voltage: 4-5.5V Dimensions: 75 x 85mm Principle: This kit contains 32 LED arranged in a heart-shaped pattern, driven by the IO port (active low); Write program control IO port to high and low level, the LED lights off or on, forming a variety of patterns effects, especially when used at night, very dynamic. Circuit is divided into three parts: the minimum system circuits, power circuits, and heart-shaped lamp circuit; Connect power 4-5.5V, press S1 latch switch (this circuit design two power interface, easy to operate), the microcontroller begin to work, 32 IO ports each string limiting resistor and LED lights connected to VCC, which LED lights which IO port is low, which is fully controlled by the program; This kit has been programmed, after assembled can be connected to display all kinds of tricks. Installation Notes: Pay attention to polarity when installing light-emitting diodes and electrolytic capacitors, long legs is positive. Note the U port direction when you install the chip seat, the positive and negative power supply can not be wrong, otherwise it will burn the chip. The middle of plug socket is positive, the outside is negative. Package included: 5 x Heart Shape LED Flashing Kit Test photos, for reference only!

Description: Rated power: 10W Voltage: 5V A designed according to the principle of ohm's law and through the resistor in parallel through a different switch, can produce 3 kinds of resistance of a new USB electronic load resistance discharge, when all the switch opens, is 2.2 ohm/10W, 4.7 ohm/10W, 2 kinds of resistance in parallel at the same time, in 5V voltage almost can produce 3A discharge current.   The actual current size, please according to ohm's law: I = U/R Resistor in parallel calculation formula: R=1/(1/R1+1/R2+...+1/Rn) K1=4.7Ohm/10W, K2=2.2Ohm/10W It's easy to test the output current of power bank, cellphone charger and USB power if up to standard. And it can do the aging test on power bank and USB power adapter. When it's discharge on the aging test, resistance will be hot, the temperature is about 80 - 85, please note that the anti-hot. Not included the USB tester. Package included: 5 x USB aging discharge loader