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DC Power Shield V1.1.0 for WEMOS D1 mini

1set 10pcs Alligator Clips Electrical DIY Test Leads Alligator Double-ended Crocodile Clips Roach Clip Test Jumper Wire

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Free Shipping 400pcs Dupont cable jumper wire dupont line female to female dupont line 20cm 1P-1P IN STOCK

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SMD LED -5050 RGB
Full Color - Red /Green/Blue
COMMON ANODE
SIZE:5.0*5.0*1.5 mm
HUE:620-625/520-530/460-475nm
Ref: 2.0-2.6/3.0-3.4/3.2-3.6 v
Low-Mid Power LED
I(Ma):60ma 
3-CHIP LED PLCC-6
QTY:500PCS

Note:this product is with DIP capacitor LM2596 step-down module
 

10Pcs DC Plug Male Electrical Socket Outlet DC-022 DC-005 DC-022B DC Outlet 5.5X2.1MM 5.5*2.1

NRF24L01   is a work in the 2.4-2.5GHz worldwide ISM band single-chip transceiver, wireless transceiver, including: the frequency generator the enhanced SchockBurstTM mode controller power amplifier crystal amplifier modulator demodulator output power channel selection and protocol set by the SPI interface to set a very low current consumption, lower current consumption mode 12.3mA Power-down mode and standby mode when in transmit mode emission power 6dBm when current consumption is 9.0mA acceptance model.
Ball to open ISM band maximum 0dBm transmit power, license-exempt use. The open 100 meters!
Support six channels of data reception
(1) low operating voltage: 1.9 ~~ 3.6V low-voltage
(2) high-rate: 2Mbps, air transmission time is very short, greatly reducing the wireless transmission of collision phenomena (software settings 1Mbps or 2Mbps air transmission rate)
Multi-frequency points: 125 frequency points, to meet the multi-point communications and frequency hopping communications needs
4 ultra-compact: built-in 2.4GHz antenna compact 15x29mm (including antenna)
(5) Low power consumption: when in answer mode communication, fast air transmission and start-up time greatly reduces the current consumption.
Low application cost: NRF24L01 integrates all RF protocol high-speed signal processing section, such as: automatically resend lost packets and automatically generate an acknowledge signal, etc. the nRF24L01 The SPI interface can take advantage of the microcontroller hardware SPI port or microcontroller I / O port to simulate the internal FIFO can be used with a variety of low-speed microprocessor interface, easy to use low-cost microcontroller.
7 facilitate the development: the link layer is fully integrated in the module, very easy to develop. Automatic retransmission function, automatic detection and retransmission of lost packets, the retransmission time and the number of retransmission can be software-controlled automatic storage is not received the packet of the response signal auto-answer, after the receipt of a valid data, the module automatically sends the reply fixed frequency detection signals without any additional programming Carrier Detect - built-in hardware CRC error detection and point-to-multipoint communication address control packet transmission error counter and carrier detection can be used for frequency hopping set can also set up six to receive the channel address, can have a choice of open receive channel standard the pin Dip2.54MM spacing interfaces for embedded applications.
 

 
Chip: MPU-9250 BMP280
Power supply: 3-5v (internal low dropout regulator)
Communication: standard IIC / SPI communications protocol
Chip built 16bit AD converter, 16-bit data output
Gyroscopes range: ± 250 500 1000 2000 ° / s
Acceleration range: ± 2 ± 4 ± 8 ± 16g
Magnetic field range: ± 4800uT
Pressure range: 300-1100hPa
Using Immersion Gold PCB, machine welding process to ensure quality
2.54mm pin pitch
Module size:(L*W)2.05* 1.43cm/0.81"*0.56"
 
    Package Included  
    1x   MPU9250 BMP280 10DOF Acceleration Gyroscope Compass Nine Shaft GY-91 Sensor

 
PCB size:1.5*1.9cm work voltage:5V Output: output high level when receive laser signal; output low level when not receive laser signal. NOTE: The sensor uses a non-modulated laser receiver, please use indoors where no light, sunlight or other fixtures may interfere, recommended for use in dark environments.

Description:
There is a single data line with a very timing-specific protocol.
Since the protocol is very sensitive to timing,
it requires a real-time microconroller such as an AVR, A rduino, PIC, mbed, etc.
It cannot be used with a Linux-based microcomputer or interpreted microcontroller
such as the netduino or Basic Stamp.
 
Features:
LED:8pcs 5050 RGB full color highlighting
Voltage: 5V
Ports: Digital
Platform: Arduino microcontroller
Applications:
Full-color module, Full color soft lights a lamp strip. 
LED decorative lighting, Indoor/outdoor LED video irregular screen.

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(2) You talk with us on line or leave message here on any questions of our item, shipping term and price.
(3) If some extra requirement on our items, please feel free to ask us.
 
Some notices about shipping:
 
(1) China Post mail delivery time is around 15-22 days (some need around 30 days), please kindly be a little patient while waiting for your parcels.
(2) You also consider other Express (UPS, DHL, FedEx, TNT or EMS) 2 to 8 days delivered.
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(6) We are not responsible for any custom duty or import tax.
(7) We would try our best to satisfy you but no any unreasonable requirements please.
 
Important Notice:
 
Customers should be sure whether their countries are allowed to import This product purchasing.
If you're unsure of whether your country allows these kinds of products,
we recommend you to contact the custom for confirmation.
We will not be responsible for losses due to customs confiscation.
 
Quality control:
 
(1) We test each item before shipping to ensure they are in good condition.
(2) As a experienced supplier we package goods in carton box with EPE, which would prevent your items from some unexpected damages efficiently during delivery.
(3) We offer you fast shipping, usually around 3 days preparation. This is an approximate time, your shipment data would be up to your specific orders.
(4) We would let you know the tracking number once we have sent out your products.

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Product Details
FM Stereo Radio Module RDA5807M RRD-102V2.0 Wireless Module Pro New for Arduino
Article-Nr.:5400777
Product Details:
Stereo Module
Condition: New
Overview: 
"RRD-102V2.0" stereo radio module (FM Stereo radio Module) high sensitivity, low power consumption,ultra- small size of the FM stereo radio module.Using RDA Microelectronics of RDA5807M(or RDA5802NM),this circuit fewer external components,the noise factor is minimal. Small size,low power consumption,low cost,simple application,the use of a wide range of advantages.Is an easy-to-use and possessed highly cost-effective single-chip FM stereo radio module.
A: Move DVD,TV,MP3,MP4 and other built-in FM wide-band wireless receiver module. 
B: mining,business,campus,residential,tourist areas and other public places,stereo FM radio
system. 
C: wireless audio and wireless stereo headset functionality. 
D: GPS navigation, TV broadcasting systems and other wireless FM radio.
E: high-end game consoles and wireless audio electronic toys.
F: mobile phones,mobile phones,intercom systems,mobile radio devices and other stereo radio.
G: PDAS and Notebook PC and other peripheral applications.
 
Function:
A: using a common 102BC module package,users can directly replace the use,without changing the circuit design. 
B: high sensitivity,low noise,anti-interference ability,very few external components,small size (11*11.2MM Max),extremely simple to use. 
C: 76-108MHz FM band worldwide compatible(76-91MHz,including Japan,America and Europe 87.5-108.5MHz). 
D: I2C serial data communications bus interface,support for external reference clock input.
E: COMS technology fully integrated single-chip integrated circuits,power consumption is minimal.
F: built-in high-precision A/D(analog) and digital frequency synthesizer.
G: built-in LDO regulator,low power,wide voltage range(2.7-3.6VDC). 
H: built-in noise reduction, soft mute,bass boost circuit design.
I: 32 load high power audio output,headphone connections are direct,no external audio driver amplifier. 
J: the application is simple,low cost,cost-effective.
Color : show as pictures
PLS NOTE that due to lighting effects, monitor's brightness / contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item!

SMD LED -5730 RED
SIZE:5.7*3.0*0.9mm
HUE:620-625nm
REF:2.0-2.6v
QTY:1000pcs
I(MA):60-120ma

Download: https://pan.baidu.com/s/1Wb1w8lx5VqZ3MtyzZHZI9Q Optical cover sheet description: It is dustproof, waterproof and scratch-resistant. It can help customers to play a big role in the harsh environment. It is a protective cover sheet that can really make up for some defects of ST chip. The function is greatly improved (if you need to cover the cover, please take the black version, the cover is not suitable for the red version)   The VL53L1X is an advanced time-of-flight (ToF) laser ranging sensor that is a miniature ToF sensor with an accurate measurement range of up to 4 m and a fast measurement frequency of up to 50 Hz. It is available in a miniature reflowable package with integrated SPAD receive array, 940 The nm stealth Class1 laser emitter, physical infrared filters and optics provide optimum ranging performance in a variety of ambient lighting conditions and offer a variety of hood window options. Unlike traditional infrared sensors, the VL53L1X uses STToF technology to measure absolute distances regardless of target color and reflectivity. It is also possible to program the size of the ROI on the receiving array, thereby allowing the sensor FoV to be reduced. main feature Fully integrated micromodule Transmitter: 940 nm stealth laser (Class1) SPAD (single photon avalanche diode) receive array with integrated lens Low-Power Microcontrollers Run Advanced Digital Firmware Pin compatible with VL53L0X ranging sensor but not compatible with the program Fast and accurate long distance ranging Distance measurement up to 400 cm Ranging frequency up to 50 Hz Typical full field of view (FoV): 27° Receive programmable programmable area of ​​interest (ROI) size on the array, allowing sensor FoV to be reduced Receive programmable ROI locations on the array to provide multi-zone operational control of the host I2C interface (up to 400 kHz) Shutdown and interrupt pins   Voltage: 3.3-5v Communication interface: I2C Size: 25x10.7x3.2mm Distance: 4cm-4m

LM2596 LM2596S DC-DC 4.5-40V adjustable step-down power Supply module 
 
Name : LM2596 DC-DC Buck module
Input voltage :4V ~ 35V
The output voltage : 1.23V ~ 30V
Output Current :3A( Max)
Conversion efficiency:92% ( MAX )
Output ripple: <30mV
Switching frequency: 150KHz
Working temperature: -forty Five~ 85
Size :43mm * 21mm * 14mm(Long*Width*Hight)
Features:
1. the range of input voltage: 3.2 V to 40 V dc (input voltage must be higher than to the output voltage of 1.5 V above. Can't booster)
2. the range of output voltage: 1.25 V dc to 35 V voltage adjustable, high efficiency (92% ) largest maximum output current is 3A.
 
Instructions:
1. Power (3-40V), power indicator light, the module is working properly.
 
2. Adjust the blue potentiometer knob (clockwise rotation generally boost,counter-clockwise rotationTurn down) and reach with a multimeter to monitor the output voltage required voltage.
 
Note:
 
  Current work long hours is recommended for use in less than 2.5A, while adding bulkHeat sink (10W output above),because it is the step-down module, in order to ensure stable output Set,please keep the minimum 1.5V differential.
 
 
 

LM2596 LM2596S DC-DC 4.5-40V adjustable step-down power Supply module 
 
Name : LM2596 DC-DC Buck module
Input voltage :4V ~ 35V
The output voltage : 1.23V ~ 30V
Output Current :3A( Max)
Conversion efficiency:92% ( MAX )
Output ripple: <30mV
Switching frequency: 150KHz
Working temperature: -forty Five~ 85
Size :43mm * 21mm * 14mm(Long*Width*Hight)
Features:
1. the range of input voltage: 3.2 V to 40 V dc (input voltage must be higher than to the output voltage of 1.5 V above. Can't booster)
2. the range of output voltage: 1.25 V dc to 35 V voltage adjustable, high efficiency (92% ) largest maximum output current is 3A.
 
Instructions:
1. Power (3-40V), power indicator light, the module is working properly.
 
2. Adjust the blue potentiometer knob (clockwise rotation generally boost,counter-clockwise rotationTurn down) and reach with a multimeter to monitor the output voltage required voltage.
 
Note:
 
  Current work long hours is recommended for use in less than 2.5A, while adding bulkHeat sink (10W output above),because it is the step-down module, in order to ensure stable output Set,please keep the minimum 1.5V differential.
 
 
 

Specifications:
Color: Yellow
Material: PCB
Display: 128 x 64 LCD
Normal Testing Speed: 2 seconds
Shutdown Current: 20nA
Size: 6.5 x 6.7cm / 2.55 x 2.63
Net Weight: 44g / 1.6oz
 
Package included:
1 x Transistor Tester (battery not included)
 
Note:
Please make sure that capacitors are discharged before testing.
The disassembled transistor tester in the picture is just for reference, please don't disassemble.
The pictures of testing process are also for reference, please in kind prevail!

product information
 
Name: LCD module
 
Model: GMG12864-06D
 
Dot matrix: 12864
 
Dimensions: 61.8 * 45.8 * 6.8
 
Window size: 58 * 28
 
Driver IC: ST7565R
 
IC: 20L16S1Y Simplified Chinese
 
Temperature: -20 degrees 70 degrees
 
Voltage: 3.3V
 
Interface mode: SPI interface

product information
 
Name: LCD module
 
Model: GMG12864-06D
 
Dot matrix: 12864
 
Dimensions: 61.8 * 45.8 * 6.8
 
Window size: 58 * 28
 
Driver IC: ST7565R
 
IC: 20L16S1Y Simplified Chinese
 
Temperature: -20 degrees 70 degrees
 
Voltage: 3.3V
 
Interface mode: SPI interface

product information
 
Name: LCD module
 
Model: GMG12864-06D
 
Dot matrix: 12864
 
Dimensions: 61.8 * 45.8 * 6.8
 
Window size: 58 * 28
 
Driver IC: ST7565R
 
IC: 20L16S1Y Simplified Chinese
 
Temperature: -20 degrees 70 degrees
 
Voltage: 3.3V
 
Interface mode: SPI interface

Description:
1. This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. This chip is like a rotary switch - it internally routes the common pin (COM in the schematic, SIG on the board) to one of 16 channel pins (CHANxx). It works with both digital and analog signals (the voltage can't be higher than VCC), and the connections function in either direction. To control it, connect 4 digital outputs to the chip's address select pins (S0-S3), and send it the binary address of the channel you want (see the datasheet for details). This allows you to connect up to 16 sensors to your system using only 5 pins!
2. Since the mux/demux also works with digital signals, you can use it to pipe TTL-level serial data to or from multiple devices. For example, you could use it to connect the TX pins of 16 devices to one RX pin on your microcontroller. You can then select any one of those 16 devices to listen to. If you want two-way communications, you can add a second board to route your microcontroller's TX line to 16 device's RX lines. By using multiple boards, you can create similar arrangements for I2C, SPI, etc.
3. The internal switches are bidirectional, support voltages between ground and VCC, have low “on” resistance and low “off” leakage, and to prevent crosstalk, perform “break-before-make” switching. The board also breaks out the chip's “enable” pin, which when driven high, will completely disconnect the common pin (all switches “off”).
 
Features:
2V to 6V operation
“On” resistance: 70 Ohms @ 4.5V
6ns break-before-make @ 4.5V
Wide operating temperature range: -55C to 125C
Function: gathering all the way ADC 16 analog signals.
Use CD74HC4067 16-channel analog signal switch
Analog Input: C0-C15 16 channels
Analog output: DIG
Channel Control: S0-S3

XH-A105 digital power amplifier board with high fidelity and two-channel stereo sound quality; input voltage is DC 12~24V, audio input supports Bluetooth, TF card, AUX 3.5mm audio line input, can be directly connected to mobile phone, MP3, etc.; power amplifier board It also comes with a volume adjustment function, which rotates the chirp potentiometer clockwise to zoom in and counterclockwise to decrease.
 
Product Name: Two-channel Bluetooth 5.0 power amplifier board
 
Product model: XH-A105
 
Input voltage: DC12-24V
 
Current: more than 3A
 
Output power: 100W*2
 
Audio input: Bluetooth, TF card, AUX
 
Number of channels: two channels
 
Size: 92*85*20MM
 
Installation aperture: 3MM
 
Installation hole distance: 85*5*78.5MM
 
 
Bluetooth operation instructions:
When the power amplifier board is connected to the power supply and the Bluetooth is not connected, the Bluetooth indicator will flash rapidly. When the Bluetooth connection is successful, the Bluetooth indicator will stop flashing. When the song is played, the Bluetooth indicator will flash slowly.
 
Note:
1. Connect the power input to the DC12-24V power supply. When the power is on, the power indicator will light red and the blue light will flash blue.
 
2. Connect the audio input to the audio source, such as MP3, mobile phone, computer, TF card, etc.
 
3. Connect the audio output to the speaker, paying attention to the positive and negative.
 
 
Bluetooth / TF card volume hole:
 
When the audio input uses Bluetooth or TF card, you can connect the power cord to the " VOL -" three holes to adjust the volume and switch songs.
1. " " and "VOL" connection:  increase the volume
2. "-" and "VOL" connection: reduce the volume
About choose Audio Input : The Board will Automatic Selection the last audio input .If you use the Bluetooth Audio input ,and then connect the AUX ,so the board will Automatic choose the AUX Audio input !

Warm prompt:
 
Dear buyer, Our cheapst transportation services Econmic category logistics (SunYou Economic Air Mail , China post Ordinary Small Packet Plus) can be traced only befor it arrive your country , please choose Standard category logistics if you want a full tracking info.
 
For example:
like this

HTTM-□ ◇ △
 HTTM is a shorthand for HelTec Touch Model;
□ → the number of keys: S-key, D-double bond, T-triple key, F-four built;
◇ → version attribute: C-regular version, S-special edition (customized version);
△ → Backlight color: B-blue, R-red, G-green
 E.g:
HTDS-SCR: single-key, conventional, red backlit touch module
HTDS-FSB: Four keys, custom version, blue backlight Touch the module
 
In touch applications such as portable media players and mobile handheld devices, large-capacity, high-visibility products have been widely adopted. Because of its ease of use, fashion and low cost advantages, more and more electronic products from the traditional mechanical keys to touch the touch button. In the case of
 Existing customer application case
l  Range hood operating panel;
l  Touch switch
l  Handheld home air environment detector;
l  Industrial control equipment with waterproof function keyboard;
l  Car Equipment;
l  Bluetooth test stand information display.
 HTTMSeries touch button module has the following characteristics:
1. Without any mechanical parts, will not wear, infinite life, reduce the cost of late maintenance;
2. The sensing part can be placed behind any insulating layer (usually glass or plastic material), it is easy to make the keyboard with the surrounding environment sealed to play the role of moisture and water;
3. Panel design arbitrary, button size, shape any design, characters, trademarks, perspective and other collocation, so that the overall sense of the product stronger;
4. Compared with the physical buttons, touch the button is more vulnerable;
5. The output of the adjustment signal can be output by latching the output or level by modifying the resistance on the back side (see section 3.3.2).
6.  2.7V ~ 6 V wide voltage input range, 3.3 V signal output, can be directly used to drive the relay, optocoupler, LED lights and other original;
7. -30 ~ 70 ° Operating temperature range;
8. Touch sensitive, no hysteresis, delay, flicker and other adverse reactions;
9. Built-in anti-jamming algorithm, with excellent anti-jamming performance.
Working voltage: 2.7 ~ 6V
Working temperature: 30 ~ 70 °
 OUT pin Output voltage: 3.3V ± 0.1V
OUTPin maximum output current:500mA

HTTM-□ ◇ △
 HTTM is a shorthand for HelTec Touch Model;
□ → the number of keys: S-key, D-double bond, T-triple key, F-four built;
◇ → version attribute: C-regular version, S-special edition (customized version);
△ → Backlight color: B-blue, R-red, G-green
 E.g:
HTDS-SCR: single-key, conventional, red backlit touch module
HTDS-FSB: Four keys, custom version, blue backlight Touch the module
 
In touch applications such as portable media players and mobile handheld devices, large-capacity, high-visibility products have been widely adopted. Because of its ease of use, fashion and low cost advantages, more and more electronic products from the traditional mechanical keys to touch the touch button. In the case of
 Existing customer application case
l  Range hood operating panel;
l  Touch switch
l  Handheld home air environment detector;
l  Industrial control equipment with waterproof function keyboard;
l  Car Equipment;
l  Bluetooth test stand information display.
 HTTMSeries touch button module has the following characteristics:
1. Without any mechanical parts, will not wear, infinite life, reduce the cost of late maintenance;
2. The sensing part can be placed behind any insulating layer (usually glass or plastic material), it is easy to make the keyboard with the surrounding environment sealed to play the role of moisture and water;
3. Panel design arbitrary, button size, shape any design, characters, trademarks, perspective and other collocation, so that the overall sense of the product stronger;
4. Compared with the physical buttons, touch the button is more vulnerable;
5. The output of the adjustment signal can be output by latching the output or level by modifying the resistance on the back side (see section 3.3.2).
6.  2.7V ~ 6 V wide voltage input range, 3.3 V signal output, can be directly used to drive the relay, optocoupler, LED lights and other original;
7. -30 ~ 70 ° Operating temperature range;
8. Touch sensitive, no hysteresis, delay, flicker and other adverse reactions;
9. Built-in anti-jamming algorithm, with excellent anti-jamming performance.
Working voltage: 2.7 ~ 6V
Working temperature: 30 ~ 70 °
 OUT pin Output voltage: 3.3V ± 0.1V
OUTPin maximum output current:500mA

HTTM-□ ◇ △
 HTTM is a shorthand for HelTec Touch Model;
□ → the number of keys: S-key, D-double bond, T-triple key, F-four built;
◇ → version attribute: C-regular version, S-special edition (customized version);
△ → Backlight color: B-blue, R-red, G-green
 E.g:
HTDS-SCR: single-key, conventional, red backlit touch module
HTDS-FSB: Four keys, custom version, blue backlight Touch the module
 
In touch applications such as portable media players and mobile handheld devices, large-capacity, high-visibility products have been widely adopted. Because of its ease of use, fashion and low cost advantages, more and more electronic products from the traditional mechanical keys to touch the touch button. In the case of
 Existing customer application case
l  Range hood operating panel;
l  Touch switch
l  Handheld home air environment detector;
l  Industrial control equipment with waterproof function keyboard;
l  Car Equipment;
l  Bluetooth test stand information display.
 HTTMSeries touch button module has the following characteristics:
1. Without any mechanical parts, will not wear, infinite life, reduce the cost of late maintenance;
2. The sensing part can be placed behind any insulating layer (usually glass or plastic material), it is easy to make the keyboard with the surrounding environment sealed to play the role of moisture and water;
3. Panel design arbitrary, button size, shape any design, characters, trademarks, perspective and other collocation, so that the overall sense of the product stronger;
4. Compared with the physical buttons, touch the button is more vulnerable;
5. The output of the adjustment signal can be output by latching the output or level by modifying the resistance on the back side (see section 3.3.2).
6.  2.7V ~ 6 V wide voltage input range, 3.3 V signal output, can be directly used to drive the relay, optocoupler, LED lights and other original;
7. -30 ~ 70 ° Operating temperature range;
8. Touch sensitive, no hysteresis, delay, flicker and other adverse reactions;
9. Built-in anti-jamming algorithm, with excellent anti-jamming performance.
Working voltage: 2.7 ~ 6V
Working temperature: 30 ~ 70 °
 OUT pin Output voltage: 3.3V ± 0.1V
OUTPin maximum output current:500mA

HTTM-□ ◇ △
 HTTM is a shorthand for HelTec Touch Model;
□ → the number of keys: S-key, D-double bond, T-triple key, F-four built;
◇ → version attribute: C-regular version, S-special edition (customized version);
△ → Backlight color: B-blue, R-red, G-green
 E.g:
HTDS-SCR: single-key, conventional, red backlit touch module
HTDS-FSB: Four keys, custom version, blue backlight Touch the module
 
In touch applications such as portable media players and mobile handheld devices, large-capacity, high-visibility products have been widely adopted. Because of its ease of use, fashion and low cost advantages, more and more electronic products from the traditional mechanical keys to touch the touch button. In the case of
 Existing customer application case
l  Range hood operating panel;
l  Touch switch
l  Handheld home air environment detector;
l  Industrial control equipment with waterproof function keyboard;
l  Car Equipment;
l  Bluetooth test stand information display.
 HTTMSeries touch button module has the following characteristics:
1. Without any mechanical parts, will not wear, infinite life, reduce the cost of late maintenance;
2. The sensing part can be placed behind any insulating layer (usually glass or plastic material), it is easy to make the keyboard with the surrounding environment sealed to play the role of moisture and water;
3. Panel design arbitrary, button size, shape any design, characters, trademarks, perspective and other collocation, so that the overall sense of the product stronger;
4. Compared with the physical buttons, touch the button is more vulnerable;
5. The output of the adjustment signal can be output by latching the output or level by modifying the resistance on the back side (see section 3.3.2).
6.  2.7V ~ 6 V wide voltage input range, 3.3 V signal output, can be directly used to drive the relay, optocoupler, LED lights and other original;
7. -30 ~ 70 ° Operating temperature range;
8. Touch sensitive, no hysteresis, delay, flicker and other adverse reactions;
9. Built-in anti-jamming algorithm, with excellent anti-jamming performance.
Working voltage: 2.7 ~ 6V
Working temperature: 30 ~ 70 °
 OUT pin Output voltage: 3.3V ± 0.1V
OUTPin maximum output current:500mA

HTTM-□ ◇ △
 HTTM is a shorthand for HelTec Touch Model;
□ → the number of keys: S-key, D-double bond, T-triple key, F-four built;
◇ → version attribute: C-regular version, S-special edition (customized version);
△ → Backlight color: B-blue, R-red, G-green
 E.g:
HTDS-SCR: single-key, conventional, red backlit touch module
HTDS-FSB: Four keys, custom version, blue backlight Touch the module
 
In touch applications such as portable media players and mobile handheld devices, large-capacity, high-visibility products have been widely adopted. Because of its ease of use, fashion and low cost advantages, more and more electronic products from the traditional mechanical keys to touch the touch button. In the case of
 Existing customer application case
l  Range hood operating panel;
l  Touch switch
l  Handheld home air environment detector;
l  Industrial control equipment with waterproof function keyboard;
l  Car Equipment;
l  Bluetooth test stand information display.
 HTTMSeries touch button module has the following characteristics:
1. Without any mechanical parts, will not wear, infinite life, reduce the cost of late maintenance;
2. The sensing part can be placed behind any insulating layer (usually glass or plastic material), it is easy to make the keyboard with the surrounding environment sealed to play the role of moisture and water;
3. Panel design arbitrary, button size, shape any design, characters, trademarks, perspective and other collocation, so that the overall sense of the product stronger;
4. Compared with the physical buttons, touch the button is more vulnerable;
5. The output of the adjustment signal can be output by latching the output or level by modifying the resistance on the back side (see section 3.3.2).
6.  2.7V ~ 6 V wide voltage input range, 3.3 V signal output, can be directly used to drive the relay, optocoupler, LED lights and other original;
7. -30 ~ 70 ° Operating temperature range;
8. Touch sensitive, no hysteresis, delay, flicker and other adverse reactions;
9. Built-in anti-jamming algorithm, with excellent anti-jamming performance.
Working voltage: 2.7 ~ 6V
Working temperature: 30 ~ 70 °
 OUT pin Output voltage: 3.3V ± 0.1V
OUTPin maximum output current:500mA

Up for sale is a MELEXIS MLX90614ESF-BAA-000-TU-ND non-contact infrared thermometer for Arduino, 
or any microcontroller that can communicate with it through it's I2C interface. 
This sensor comes with a breakout board with all of the components needed for operation and two types of pins. 
They are unsoldered. Please indicate if you would like one or the other soldered. 
There are two solder jumpers for the I2C interface that may or may not need to be soldered depending on your application, 
but will not for most uses.
 
 
Features and Benefits: 
 
 
Small size, low cost 
Mounted on a breakout board with two types of pins 
10k Pull up resistors for the I2C interface with optional solder jumpers 
Easy to integrate 
Factory calibrated in wide temperature range: 
-40… 125°C for sensor temperature and 
-70… 380°C for object temperature. 
High accuracy of 0.5°C over wide temperaturerange 
(0… 50°C for both Ta and To) High (medical) accuracy calibration 
Measurement resolution of 0.02°C 
Single and dual zone versions 
SMBus compatible digital interface 
Customizable PWM output for continuousreading 
Simple adaptation for 8…16V applications 
Sleep mode for reduced power consumption 
Different package options for applications andmeasurements versatility 
Automotive grade
 
 
Applications Examples: 
 
 
High precision non-contact temperaturemeasurements 
Thermal Comfort sensor for Mobile AirConditioning control system 
Temperature sensing element for residential, 
commercial and industrial building airconditioning Windshield defogging 
Automotive blind angle detection 
Industrial temperature control of moving parts 
Temperature control in printers and copiers 
Home appliances with temperature control 
Healthcare 
Livestock monitoring 
Movement detection 
Multiple zone temperature control – up to 127sensors can be read via common 2 wires 
Thermal relay / alert

Specifications: Quantity: 600pcs
Contents Included:
2N2222(NPN Type): 40pcs
2N3904(NPN Type): 40pcs
2N3906(PNP Type): 40pcs
2N5401(PNP Type): 40pcs
2N5551(NPN Type): 40pcs
A1015(PNP Type): 40pcs
C1815(NPN Type): 40pcs
C945(NPN Type): 40pcs
S8050(NPN Type): 40pcs
S8550(PNP Type): 40pcs
S9012(PNP Type): 40pcs
S9013(PNP Type): 40pcs
S9014(NPN Type): 40pcs
S9015(PNP Type): 40pcs
S9018(NPN Type): 40pcs
Case Size: 17 * 10 * 2.3cm / 6.7 * 3.94 * 0.9in(L * W * H)
Total Weight: 163g / 5.76oz

100% Brand new and high quality!
Simple and stylish design.
Great for repairing, replacing or making a clock.
Easy and convenient to use.
Specifications:
Material: Plastic & Aluminum
Powered supply:1*AA battery (not included)
Color:Black
Size:56*56*15mm
 

 
 
 

Description:
Features:
USB to RS485 Converter Adapter
USB connector: to your PC
RS485 connector: to your RS485 device
No need external power, powered by USB port
Fully compliant USB 2.0 standard , backward compatible with USB1.1
Applications:
All kinds with RS485 port device parameter settings , data communication
Short distance , such as parameter settings of the computer peripheral equipment , the use of common data lines can be .
A and A port of the device when the wiring is connected , B and device B connected . Some devices D A and D, - B .
? LED display of communication data
? Machine PLC data reading and writing
? Monitoring data read and write , and PTZ control
? Centralized control of household electrical appliances
? Access Control System ; card
? A variety of industrial automation ; instrumentation
? Parking ; bus fees
? Dining Hall ; staff attendance
? Highway toll station; ATM machine
Specification:
Dimension:6.0 x1.8x1.4cm
Color: Black
Net weight: 8g
Packaging weight: 18g
Support System: Windows XP , Vista, Windows 7 , Linux , MacOS , and WinCE5.0 drive
Supports baud rate range : 75bps - 115200bps , up to 6Mbps
Supports Plug , Play and hot-swap ( USB side) ;
Better than using CH341D chip or similar chip to support the laptop USB port .
Communication distance up to 1.2KM, with anti-jamming performance of industrial site ;
Work temperature range: -40
Communication distance :1200m(max)
Package Content:
1 x USB to RS485 Converter
Note:
A. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. 
B. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. 
C. We only ship to confirmed order address,your order address Must Match your recipient address.

Warm prompt:
 
Dear buyer, Our cheapst transportation services Econmic category logistics (SunYou Economic Air Mail , China post Ordinary Small Packet Plus) can be traced only befor it arrive your country , please choose Standard category logistics if you want a full tracking info.
 
For example:
like this

SMD LED -5050 YELLOW
SIZE:5.0*5.0*1.5mm
CAT:800-1200mcd
HUE:580-590nm
REF:2.0-2.6v
QTY:500pcs
I(MA):60ma

The shield is fully assembled, tested and ready to go. No wiring, no soldering! Simply plug it in and load up our library - you'll have it running in under 10 minutes! Works best with any classic  (UNO/Duemilanove/Diecimila). This shield does NOT work with the Mega but its going to be half the speed of the Uno-type boards because of the way the Mega rearranges all the pins (there is no way to get around this!) This shield is not Leonardo-compatible
Description:
Spice up your project with a beautiful large touchscreen display shield with built in microSD card connection. This TFT display is big (2.4" diagonal) bright (4 white-LED backlight) and colorful (18-bit 262,000 different shades)! 240x320 pixels with individual pixel control. It has way more resolution than a black and white 128x64 display. As a bonus, this display has a resistive touchscreen attached to it already, so you can detect finger presses anywhere on the screen.
 
Technical Details:
2.4" diagonal LCD TFT display
240x320 resolution, 18-bit (262,000) color
spfd5408 controller with built in video RAM buffer
8 bit digital interface, plus 4 control lines
Uses digital pins 5-13 and analog 0-3. That means you can use digital pins 2, 3 and analog 4 and 5. Pin 12 is available if not using the microSD
Works with any '328 or Mega (Leonardo not supported yet)
5V compatible! Use with 3.3V or 5V logic
Onboard 3.3V 300mA LDO regulator
4 white LED backlight. On by default but you can connect the transistor to a digital pin for backlight control
4-wire resistive touch screen
   

 
Description:
Size: 21mm x 18mm
1.71V to 3.6V Supply Voltage
Max I2C Speed: 3.4Mhz
Low power consumption - 2.7uA at 1Hz
I2C , SPI(4 Wire) , SPI(3 Wire) interface
Very low noise - up to 0.2Pa (1.7cm) and 0.01 temperature
Full calibrated
Pressure Range: 300hPa to 1100hPa ( 9000m to -500m)
Packing List:
BMP280*10PCS

Free shipping  B0505S-1W 5V to 5V converter DC DC power module converter 1000VDC Isolation
 
Features:
 
It is of high power density, high efficiency, high-reliability, small size and lightweight.
It can isolate unsteady single-way voltage output.
Low ripple coefficient and low static current can promote your work efficiently.
Applicable to distributed power supply system and the circuit that is powered by a small power source.Such as industrial control industry, instrumentation industry, intelligent transmitter, sensor, network communication equipment and other fields.
 
Specification:
 
Current Conversion: DC to DC
Output voltage:DC 5V
Output Current:20~200mA
Reflected Ripple Current:20mA
The Maximum Capacitive Load:220μF
Input voltage 4.5-5.5V
Rated Output Power: 1W
Color: Black

1. Volume: 23 * 24MM weight:0.45 g  
2. Excellent noise suppression. in the absence of contact input audio, you will not hear any noise even put your ear close to the speaker  
3. The two-channel stereo, 5V power supply can output 5W 5W power, directly drive 4, 8 speakers, output power, full of energy, good sound quality, with left and right channel volume adjustment.  
4.unique non-LC filter Class-D digital power board, it can be used directly for the USB-powered from computers.  
5. dual-panel wiring and proper solution to potential balance and channel crosstalk caused by the wiring between  
6. ultra-miniature design, it can easily be placed in a small space inside a variety of digital products, high amplification efficiency. 
7. Solder by machine  
8. The rated working voltage 2.5-5V, limit operating voltage 5.5V

 
Voice-activated LED Melody Light
Features: After the kit is successfully produced, as the music or other sounds sound, the five LED lights follow the rhythm of the sound (the speed of the sound) and move. It can be placed near the sound, you can feel the beautiful melody combination of sound and light, let the light dance with music!
Circuit Principle:
The voice-activated LED melody lamp circuit is composed of a power supply circuit, a microphone amplifying circuit and an LED lighting indicating circuit. The power source is input by J1, and the C1 filter is used for the circuit. The MIC1 converts the sound signal into an electrical signal, which is coupled to Q1 by C2, and the amplified signal is sent to the base of Q2. The LED is illuminated by Q2. The louder the sound, the higher the brightness of the LED.
Component list:
Common Problem:
1. LED positive and negative poles are not noticed, long legs are positive. 2. The three resistors are not soldered according to the marking on the board. Use a multimeter to measure or look at the resistance color ring reading. 3. The triode is not inserted in accordance with the shape on the board, resulting in the wrong direction. 4. The positive and negative poles of the microphone are not right, the positive pole of the long leg, or the pin connected to the outer casing is the negative pole. 5. Electrolytic capacitance value welding error, a 1uf, a 47uf, pay attention to distinguish, long foot positive. 6. The positive and negative poles of the power supply are connected in reverse. The mark on the board is the positive one. The line corresponding to the mark is the positive pole, and the line corresponding to the - sign is the negative pole. 7. Check the welding short circuit and the phenomenon of virtual soldering. The power supply voltage is 3-5.5V. A stable power supply is required. It is best to use battery power. Appendix: Specific identification methods for four-ring and five-ring color ring resistors
Voice-activated LED Melody Light

 
Description:
 
100% brand new and high quality
Support Google Earth
C / A code 1.023 MHz stream
Receiving Band: L1 [1575.42 MHz]
Pursuit Channel: 56
DGPS [WAAS, EGNOS and MSAS]
positioning performance:
2D plane: 5 m [Average]
2D plane: 3.5 m [Average], has auxiliary DGPS.
Drift: <0.02 m / s
Timing Accuracy: 1us
Reference Coordinate System: WGS-84
Maximum altitude: 18,000 m
Maximum speed: 500 m / s
Acceleration: <4g
electrical properties:
Tracking sensitivity: -162dBm
Acquisition sensitivity: -160dBm
Departure Cold time: 29 s [Average]
Now Hot start: 28 s [Average]
Hot start time: 1 s [Average]
win back time: 0.1 s [Average]
operating temperature: -30 ° To 80°
Quantity:1pc

Material: Electrical components
Color: See pictures
Specifications:
Model:XK-2412-24
Input voltage:AC85-265V
Frequency:50HZ/60HZ
Output voltage:DC 24V
Output current:4A-6A
Output power:100W
Overvoltage protection:yes
Over current protection:yes
Size: See the picture
No retail package

Technical parameters: 
Operating Voltage Range: DC4.5-20V 
Static current: <60uA 
Output level: High 3.3V / Low 0V 
Trigger: repeatable trigger (default) 
Delay time: Default 8S -30% (can be customized range of a few tenths - tens of minutes) 
PCB Dimensions: 10 * 23mm 
Induction angle: <100 degree cone angle 
Induction distance: 3 meters 
Working temperature: -20 - 80 degrees 
Sensor Lens Dimensions: Diameter: 10mm (default)
 
Features: 
Automatic induction: to enter the sensing range of the output is high, people leave the sensor range automatically delay off high, output low. Ultra-small size. 
Repeatable trigger: the sensor output high, the delay period, if there is human activity in its sensing range, the output will remain high until people leave after the high variable delay lOW (automatically extended sensor module detects the human body after every activity a delay period, and the last time an event is the starting point of the delay time). 
Wide operating voltage range: the default operating voltage DC4.5V-20V. 
Micropower: quiescent current <50 microamps, especially for battery-powered automatic control products. 
Output high signal: easy docking and all kinds of circuits.
 
Applications: 
Body induction lamps 
Body sensors toys 
Security Products 
Industrial automation and control 
Auto-sensing of electrical equipment 
Battery-powered automatic control
 

Warm prompt:
 
Dear buyer, Our cheapst transportation services Econmic category logistics (SunYou Economic Air Mail , China post Ordinary Small Packet Plus) can be traced only befor it arrive your country , please choose Standard category logistics if you want a full tracking info.
 
For example:
like this

SMD LED - 5050 BLUE
SIZE:5.0*5.0*1.5MM
HUE:455-470NM
REF:3.0-3.6V
CAT:10-20LM
QTY:500PCS

 SPI serial, less I/O port need
Controller: ST7735S
pcb adapter for lcd
one sd card socket
can be driverd by 8051 / AVR / PIC /ARM/STM32 ....
Resolution: QVGA 128*160 Dots
 
Package Included:
 
10 X 1.8" inch TFT LCD Display module