This is Dot Led Matrix Module incorporating MAX7219 Driver chip. By using this dot LED module in your upcoming project, you will be able to add some great cool animation.The individual module features 32×8 LED’s, each controlled very precisely by the MAX7219 driver to generate the color pattern you wish. The great advantage of using this is users will have control over all of the 256 LED by just connecting 3 output communication wires to microcontrollers like Arduino etc.
LED Color Options: Red, Green, Blue
Operating Voltage: 5V
Fixing screws with 64 holes with a diameter 3mm
Module with input and output interfaces, support for cascading multiple modules
Wiring Instruction:The left side of the module to the input port, the right to an output port when the control of a single module, simply input port connected to CPUWhen a plurality of cascaded modules, input and output termination CPU, an input terminal of the second output end of the first module a module, the first two modules of the input terminal of the three termination modules, and so on... 51 microcontrollers For example:VCC -- 5VGND -- GNDDIN -- P2.2CS -- P2.1CLK -- P2.0
These cylindrical brushed DC gearmotors are available in a wide range of gear ratios. The gearmotors all have the same 25 mm diameter body and 4 mm diameter gearbox output shaft, so it is generally easy to swap one version for another if your design requirements change (though the length of the gearbox tends to increase with the gear ratio).
320 x 240 Resolution
Compatible with Raspberry Pi 2 / 3 / 4 all variants
RGB 65K true to life colours
TFT Screen with integrated 4-wire Resistive Touch Panel
Easy 4 pin interface to any TTL Serial Host
4M Flash memory for User Application Code and Data
On board micro-SD card for firmware upgrade
Adjustable Brightness:0~180 nit, the interval of adjustment is 1%
5V90mA power conusmption
Nextion is a Seamless Human hine Interface (HMI) solution that provides a control and visualisation interface between a human and a process, hine, application or appliance. It is the best solution to replace the traditional LCD and LED Nixie tube.
This solution includes hardware part - a series of TFT boards and software part - Nextion editor. Nextion TFT board uses only one serial port to do communicating. Let you get rid of the wiring trouble. We notice that most engineers spend much time in application development but get unpleasant results. In this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich your interface design. And the drag-and-drop function ensures that you spend less time in programming, which will reduce your 99% development workloads. With the help of this WYSIWYG editor, GUI designing is a piece of cake.
It's easy to adapt Nextion family HMI to existing projects, you just need to provide it a UART. NX2432T024 is a powerful 2.4'' HMI, which is member of Nextion family. Features include: a 2.4" TFT 320 x 240 resistive touch screen display, 4M Flash, 2KByte RAM, 65k colors.
Measuring 25 mm (0.98″) in diameter, these motors offer great capabilities in a small package. They are available in a range of gear ratios.
With quadrature encoders added to the micro metal gear motors (with extended back shaft), these motors use a magnetic disc and hall effect sensors to provide 11 counts per revolution of the motor shaft. The sensors operate from 3.3 V to 5 V and provide digital outputs that can be connected directly to a micro controller or other digital circuit.
Stall Current: 1.8A (6V), 1.3A (12V), 0.7A (24V)
No-Load Current: <0.10A (6V); <0.06A (12V), <0.04A (24V)
At Load Current: 0.45A (6v & 12V), 0.25A (24V)
Load Speed (RPM)
Max. Efficiency (Torque, Kg-cm)
Gear Box Length
- Motor Input
VCC - 5V for Encoder
GND for Encoder
OUT1 & OUT2 - Encoder Pulses
Measuring 37 mm (1.46″) in diameter, these 12V and 24V motors are capable of offering huge amounts of torque in a reasonable package. They are available in a range of gear ratios.
With quadrature encoders added to the micro metal gearmotors (with extended back shaft), these motors use a magnetic disc and hall effect sensors to provide 11 counts per revolution of the motor shaft. The sensors operate from 3.3 V to 5 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit.
NOTE: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes; a general recommendation for brushed DC motor operation is 25% or less of the stall current.
Stall Current: 3.1A (24V), 1.6A (12V)
No-Load Current: <0.08A (12V), <0.11A (24V)
At Load Current: <0.50A (12V), <0.65A (24V)
Following are specifications for 12V motors -
Max. Efficiency(Torque, Kg-cm)
Gear Box Length
Following are specifications for 24V motors -
Load Speed (RPM)
Max. Efficiency(Torque, Kg-cm)
Gear Box Length
With a cross section measuring only 10 × 12 mm (0.39″ × 0.47″), these small brushed DC gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and with five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. With the exception of the 1000:1 gear ratio versions, all of the micro metal gearmotors have the same physical dimensions (though the terminal size and separation on the HPCB versions differ slightly from the other versions), so it is generally easy to swap one version for another if your design requirements change.
Stall Current: 0.55A (6V)
No-Load Current: <0.06A (6V)
At Load Current: 0.17A (6V)
Shaft Diameter: 3 mm
Load Speed (RPM)
Max. Efficiency(Torque, Kg-cm)
Stall Torque (Kg-cm)
Gear Box Length
1GHz single-core CPU
Mini HDMI port
Micro USB OTG port
Micro USB power
HAT-compatible 40-pin header
Composite video and reset headers
CSI camera connector (v1.3 only)
The credit-card-sized computer has become even smaller! The Raspberry Pi Zero is still the Pi you know and love, but at a largely reduced size of only 65mm long by 30mm wide and at a very economical price. With the addition of wireless LAN and Bluetooth, the Raspberry Pi Zero is ideal for making embedded Internet of Things (IoT) projects. The Pi Zero has been designed to be as flexible and compact as possible with mini connectors and an unpopulated 40-pin GPIO, allowing you to use only what your project requires.
At the heart of the Raspberry Pi Zero is a 1GHz BCM2835 single-core processor with 512MB RAM. Quite frankly, this Pi is about four times faster that the original Raspberry Pi and is only a fraction of the cost of the current RPi3.
These brushed DC gearmotors are compact and affordable — perfect for building a quick, miniature robot. They are intended for use at 4.5 V, though in general, these kinds of motors can run at voltages above and below this nominal voltage, so they should operate comfortably in the 3 V to 6 V range. The plastic gearbox is protected by a built-in safety clutch that will typically slip before the gear teeth can shear.
For rugged and harsh environments, please use our 65mm Rugged Wheel Set
Wheel Diameter: 66mm
No-Load Speed (6V): 200 RPM (±10%) @ 0.2A
No-Load Speed (3V): 90 RPM (±10%) @ 0.15A
Maximum Efficiency: 2.0 kg-cm / 170 RPM / 0.6A
Reduction Ratio: 1:48
Bluetooth voice player, a Bluetooth speaker anytime anywhere
Bluetooth wireless connection.Longest communication distance 20 meter.
Support decoding function.
Support amplifier function.
Pairing voice prompts.
Working Voltage: 5 V
Transmission rate: 500Kbps
Output Power: 3 W * 2
Audio Socket: 3.5 mm
Size: 68 * 48 * 10 mm
Green LED is power indicator,Blue LED will keep light after power on or no connection to Bluetooth device succeeded.
Connection succeeded but don't play : Blue LED will keep on.
Blue LED keep flashing:Playing
These cylindrical brushed DC gearmotors are available in a wide range of gear ratios and 12V with long-life carbon brushes (CB).
All geramotors have the same 20 mm diameter body and 4 mm diameter gearbox output shaft, so it is generally easy to swap one version for another if your design requirements change (though the length of the gearbox tends to increase with the gear ratio).
Higher voltages could start negatively affecting the life of the motor, and lower voltages might not be practical. Four different gear ratios are available with us.
Useful in cleaning up mistakes or removing excessive solder, every electrical engineer has one of these on their desk.
To use, depress the end to engage the vacuum. Then heat up the to-be-desoldered joint until it is liquid. With your other hand hold the plastic tip as close as possible to the joint and depress the button to suck up all the liquid solder. If necessary, clean up the remaining solder with wick.
All metal construction is ideal for heavy use including production re-work and repair. Large capacity spring-loaded plunger quickly removes solder in a single action. Tool easily disassembles for fast cleaning, tip and "O" ring replacement. Internal plunger pin automatically purges solder from tip with each use. Length: ~19cm
The LilyPad Arduino 328 Main Board is an Arduino-programmed microcontroller designed to be easily integrated into e-textiles and wearable projects. It offers the same functionality you find in other Arduino boards, in a lightweight, round package designed to minimize snagging and profile, with wide tabs that can be sewn down and connected with conductive thread.
The LilyPad Arduino consists of an ATmega328 with the Arduino bootloader and a minimum number of external components to keep it as small (and as simple) as possible. This board will run from 2V to 5V and offers large pin-out holes that make it easy to sew and connect. Each of these pins, with the exception of (+) and (-), can control an attached input or output device (like a light, motor, or switch).
LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They’re even washable!
Total number of input output pins : 9
Digital input output pins : 5
Analog input output pins : 4
It uses ATmega328
On / Off switch is built-in
JST connector (built-in power supply socket) for 3.7 V LiPo battery
Built-in charging socket i.e. we don’t have to worry about any external voltage supply to charge our batteries.
Suitable for simple projects
Don’t supply more than 5.5 V else you will damage your board.
Per pin max current allowed is 40 mA
Max current for entire package should not exceed 200 mA
This is WiFi serial transceiver module, based on ESP8266 SoC. The SOC has Integrated TCP/IP protocol stack.It is TTL serial communication interface and its parameters can be set by AT command. It is widely used in networking, smart home project when it is connected to the wifi router. It can be used for remote monitoring of home appliances, bedroom temperature and humidity, controlling home appliances and smart car by the mobile phone.
Interface logic voltage: 3.3V / 5V compatible(On-board level shift circuit)
Working voltage: 4.5V - 5.5V (On-board 3.3V LDO Regulator)
Working current: 240mA(MAX)
Serial port baud rate: 115200 (default), can be modified to other values by AT command
Serial communication format: 8N1
On-board reset button
On-board switch to select UART mode or firmware update mode
Antenna Type: Built-in ceramic antenna is available, and you can also use an external antenna.
Wireless Network Mode: station / softAP / SoftAP + station
Wireless criteria: 802.11 b / g / n
WIFI @ 2.4 GHz, support for WPA / WPA2 security mode
Built-in ceramic antenna or IPEX
Power Supply Range
Voltage 3.0V ~ 3.6VˈCurrent >300mA
802.11b: 16±2 dBm (@11Mbps)802.11g: 14±2 dBm (@54Mbps)802.11n: 13±2 dBm (@HT20, MCS7)
54 Mbps (3/4 64-QAM): -70dBm6 Mbps (1/2 BPSK): -88dBmCCK, 1 Mbps : -90dBmCCK, 11 Mbps: -85dBmHT20, MCS7 (65 Mbps, 72.2 Mbps): -67dBm
2412 ~ 2484MHz
Support 300 ~ 4608000 bps ˈDefault 115200 bps
Operating Temperature (°C)
-20 ć ~ 85 ć
8 × 5 × 1 cm
The 4 x 4 matrix keypad usually is used as input in a project. It has 16 keys in total, which means the same input values. The 4 x 4 Matrix Keypad Module is a matrix non-encoded keypad consisting of 16 keys in parallel. The keys of each row and column are connected through the pins outside – pin R1-R4 as labeled beside control the rows, when L1-L4, the columns.
A 4×4 matrix keypad consisting of microswitch buttons. The module has four holes 3mm (M3) holes for mounting. The pin designations on each PCB are shown on each PCB. Four pins are thus used as an ‘x’ coordinate and the other 4 as a ‘y’ coordinate.The module is already equipped with soldered pin headers (rotated 90 degrees).
First test whether any key is pressed down. Connect power to rows, so they are High level. Then set all the rows R1-R4 as Low and then detect the status of the columns. Any column of Low indicates there is key pressing and that the key is among the 4 keys of the column. If all columns are High, it means no key is pressed down. Next, locate the key. Since the column in which the pressed key lies is identified, knowing the line would finalize the testing. Thus, set the rows as Low in turns until any is unveiled accordingly – other rows will still be High.Now the row can be identified. Detect the status of each column in turns. The column tested Low is the one intersecting with the line – their cross point is just the key pressed.
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