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Waveshare 12V/4A 1.2m Length Cable DC Jack Power Supply Adapter (UK Plug)

Plug type: US Plug, EU Plug, UK Plug
Power cord specifications: line length about 1.2m, outer diameter 5.5mm, inner diameter 2.1mm, DC jack
Protection circuit: short circuit/overvoltage/overcurrent protection
Input parameters: AC100V~240V 50Hz/60Hz, no-load low standby power consumption
Output parameters: DC12V4A, low ripple
Safety certification: UL/CUL, CE, TUV, SAA, GS
Product size: about 89.4 x 47.4 x 23.5mm
Weight: about 200g

$16.69 $19.86

Support setting device address (1-255) to cascade multiple devices through RS485 bus
With flash-on and flash-off functions, the relay can be controlled by command to automatically close after being turned on for a period of time
Onboard voltage regulator chip, direct plug-in 7V-36V wide voltage power supply
Onboard integrated power isolation, which can provide stable isolation voltage, and no additional power supply is required for the isolation end
Onboard integrated ADI magnetic coupling isolation, which can be used for signal isolation, high reliability, strong anti-interference, low power consumption
Onboard resettable fuse and TVS (transient voltage suppressor) can effectively suppress surge voltage and transient spike voltage in the circuit, prevent overcurrent and overvoltage, lightning protection and anti-static
Onboard optocoupler isolation to avoid interference from relay high-voltage circuit
Adopting dedicated relay driver chip with built-in freewheeling diode protection, the driving capability is stronger and more stable

$62.51 $75.64

The Raspberry Pi 4 Model B is a compact yet powerful single-board computer designed for DIY enthusiasts, developers, and tech innovators. With enhanced processing power, versatile connectivity, and dual-display support, its ideal for projects ranging from desktop computing to smart home automation.
Upgraded Quad-Core Processor: BCM2711B0 Chipset - 64-bit ARM Cortex-A72 CPU (1.5GHz quad-core) delivers 23 times faster performance compared to earlier models. Smooth multitasking: Optimized for programming, media streaming, and complex applications.
Flexible Memory Options: 2GB, 4 GB, or 8 GB RAM variants - choose the right configuration for your project needs.
Dual micro HDMI ports: Drive two 4K screens simultaneously at 60Hz for multitasking or immersive multimedia experiences.
Advanced Connectivity:
-Gigabit Ethernet: Wired speeds up to 1000Mbps.
-Dual-band Wi-Fi (2.4GHz/5GHz) & Bluetooth 5.0: Stable wireless connections for IoT and peripheral devices.
2 USB 3.0 + 2 USB 2.0: Transfer data up to 5Gbps (USB 3.0) for external storage or peripherals.

$323.28 $378.24

Number of degrees of freedom: 4
Workspace: horizontal diameter 1090mm (Max, 360 degrees omnidirectional), vertical range 798mm (Max)
Working voltage: standard 12V 5A power supply, can be powered by 3S lithium battery pack
Load capacity: [email protected]
Repeat positioning accuracy: about +/-4mm (same load)
Drive rotation speed: 40rpm (no load, no torque limit)
Working range: BASE-360 degrees, SHOULDER-180 degrees, ELBOW-180 degrees, HAND-135 degrees/270 degrees
Drive mode: TTL bus servo servo (TTL BUS SERVO), joint direct drive

$220.13 $272.96

Onboard BMP390 sensor, can measure atmospheric pressure, altitude and temperature
Support I2C interface communication, can set I2C address, support I2C bus cascade
Support SPI interface communication, default is I2C interface, SPI can be enabled through CS chip select
Onboard level conversion circuit, compatible with 3.3V/5V working level
Function: monitor atmospheric pressure, altitude, temperature
Application field: smart home
Communication interface: I2C / SPI
Air pressure measurement range: 300-1250hPa

$17.65 $20.47

Adopts the RP2040 microcontroller chip designed by Raspberry Pi
Equipped with a dual-core ARM Cortex M0+ processor, running at a frequency of up to 133MHz flexible clock
Built-in 264KB SRAM and 2MB on-chip Flash
True stamp hole design, can be directly soldered and integrated into the user-designed baseboard
USB1.1 host and device support
Support low-power sleep and hibernation modes
Can be identified as a large-capacity storage through USB for drag-and-drop download of programs
RP2040s 29 GPIO pins are brought out (20 can be brought out through pin headers, and the rest can only be brought out by soldering)

$10.44 $12.95

Adopts the RP2040 microcontroller chip designed by Raspberry Pi
Equipped with a dual-core ARM Cortex M0+ processor, running at a frequency of up to 133MHz flexible clock
Built-in 264KB SRAM and 2MB on-chip Flash
True stamp hole design, can be directly soldered and integrated into the user-designed baseboard
USB1.1 host and device support
Support low-power sleep and hibernation modes
Can be identified as a large-capacity storage through USB for drag-and-drop download of programs
RP2040s 29 GPIO pins are brought out (20 can be brought out through pin headers, and the rest can only be brought out by soldering)

$10.98 $12.96

Based on Raspberry Pi 40 PIN GPIO interface, suitable for Raspberry Pi series motherboards
With CAN function, using SPI interface CAN controller MCP2515, with transceiver SIT65HVD230DR
With RS485 function, using UART control, half-duplex communication, supporting automatic switching of transceiver status without program control, transceiver is SP3485
Onboard 120 ohm terminal resistors for RS485 and CAN interfaces, which can be enabled by setting the dip switch
Onboard TVS (transient voltage suppression tube), RS485 communication can effectively suppress surge voltage and transient spike voltage in the circuit, lightning protection and anti-static
Reserved control interface for convenient control by other controllers
Working voltage: 3.3V
Purpose: RS485 CAN interface expansion

$18.77 $22.15

240 x 135 resolution IPS LCD screen, 65K color, can clearly display color pictures
Use SPI control to ensure that it does not occupy too many interface pin resources
Comes with 1 joystick and 2 buttons for easy expansion of applications
Working voltage: 2.6-5.5V
Resolution: 240 x 135 pixels
Communication interface: 4-wire SPI
Display size: 24.91 x 14.86mm
Display panel: IPS

$15.93 $19.43

Working power supply: DC5V external power supply or 18650 battery (both need to be prepared by yourself)
Applicable batteries: batteries that meet the stop discharge voltage of 2.5~3.5V and 4.2V charging are applicable
Power supply interface: Type-C interface, power supply line is prepared by yourself (C port mobile phone line)
System language: Chinese, English
Test quantity: 1-way charging and discharging measurement (only right battery)
Internal resistance measurement: Support, use DC two-wire method to test internal resistance
Charging function: Support, 1-way program control about 1A (MAX) charging; 1-way hardware control about 0.5A (MAX) charging
Discharging function: Support, only 1-way supports about 1A (MAX) discharge and automatically stops when the condition is met

$10.94 $13.24