Best Dorhea in 2026

DS3231 16-pin memory chips - AT24C32 ,extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.

Highly accurate RTC completely manages all timekeeping functions.The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping.

Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.

This plug is manufactured from durable black rubber,corrosion resistant,fits snugly inside the trailer hitch tube, will not fall out.

Precise cutouts of standard square tow hitch receiver, It stays very snug into the receiver.

Universal 2" black trailer hitch covers plugs insert fits standard 2 in X 2 in receiver tube ,classic III and classic IV hitch receiver openings.

This i2c display module is 0.96 inch diagonal,Resolution: 128 x 64, View angle: > 160°, Support voltage: 3.3V-5V DC, Power consumption: 0.04W during normal operation, full screen lit 0.08W,Color:Yellow Blue

The IIC address can be changed,it is convenient to use with different machines Four square holes are easy to install

0.96 Inch OLED module for showing graphical & textual information directly on your micro-controller projects. It compatible with Raspberry pi, 51 MCU, STIM 32

Material: High quality Aluminum,sturdy and durable, adopt surface oxidation treatment, anti-Rust and Anti-corrosion effectively

Tooth timing blet pulley, use with 20 Teeth 5mm bore idler pulley

Use High-quality Motor-grade bearings to ensure that the machine is works good

This 78.7'' ribbon flat cable is specially designed for stock long flex cable from a Raspberry Pi Camera for 6.56ft (200cm )

The 78.7 inch cable usually consists of a flat and flexible plastic film base, with multiple metallic conductors bonded to one surface

Each order comes with two cables(2 meters), the raspberry pi and pi camera shown in the picture are not included (but we have Pi camera in the shop)

This 39.9 inch ribbon flat cable is specially designed for swap out the stock long flex cable from a Raspberry Pi Camera for 3.28ft (100cm )

1 meter 39.9'' cable for raspberry pi camera is longer than standard cable, which is a good option to locate your camera

Work fine with your need and would be flexible with camera placement.

This OLED display module is 0.96 inch diagonal,Resolution: 128 x 64, View angle: > 160°, Support voltage: 3.3V-5V DC, Power consumption: 0.04W during normal operation, full screen lit 0.08W,Color:White Light

Embedded Driver IC: SSD1306, Communication: I2C/IIC Interface, only need two I / O ports.This oled display can be used with different machine easily

0.96 inch oled module for showing graphical & textual information directly on your micro-controller projects. It compatible with Mega, Raspberry pi, 51 MCU, STIM 32

100% Brand new and high quality, aluminum, adopt surface oxidation treatment, anti-Rust and Anti-corrosion effectively

Toothless timing belt pulley, use with 20T 5mm bore idler pulley

Use high-quality mMotor-grade bearings to ensure that the machine is works good

High Quality -- Good condition,with high quality ,great performance

Super Quiet -- Cooling fan run smoothly(15.92dBA), Long life (30,000 hours) keep CPU safe without overheating

Unique Terminal Interface -- with two terminals, Its connector is separating, One-to-Two interface connector Interface for dual speed mode (3.3V and 5V DC)

High Quality -- 100% brand new and in good condition,with high quality ,great performance, solid construction.

Camera Specifications -- The camera is capable of 2592 x 1944 pixel static images,and also supports 1080 p @ 30 fps, 720 p @ 60 fps and 640 x480 p 60/90 video recording,with 5MP OV5647 1080p webcam sensor

IR-CUT Camera -- It's built-in IR-CUT camera,automatically switch day and night mode for better and clearer image during the day and night.

The fan is 60x60x10mm or 2.36x2.36x0.39 inches; Rated Power: DC 12V 0.1Amp; Speed: 3000RPM; Air flow: 13.8CFM; Noise:26dBA; Connecter: XH2.54-2Pin

Ball bearing design ensures reliability and longer life

2-pin connector with tachometer wire, Comes ready for 2-pin motherboard fan headers

High quality ;Mini and light weight design; large and clear LCD display.

Auto converts cooling and heating modes to keep your equipment in an ideal temperature range. .Have 2 relays .Switch between cooling and heating modes. Support celsius display.

Wide temperature range (-50-99 °C); dual heating and cooling function.

100% NEW brand,high quality. Stall Torque (4.8V): 17.5oz /in (1kg/cm); Operating voltage: 3.0V~ 6V; Temperature range: -30 to +60; Dead band width: 7usec.

It is tiny and lightweight with high output power.

Compatible with the project like Robot Arm/ Robot hand/ control the servo with potentiometer/ multi servo control.

Working frequency: FM 80MHz-108MHz, AM 520KHz-1710KHz; Material of antenna: non-toxic ABS Plastic, car windshield window glass adhesive mounting; Cable Length: 3m / 10 feet; Antenna Connector: DIN Plug Connector.

The car antenna is designed increasing distance, reducing noise, enhancing receiving clear and sensitivity.

This hidden mini antenna is small and sleek, easy to assemble, just removed the adhesive tape, stick it on the front or rear windshield directly.

This DSO 138 oscilloscope circuit boards has been assembled and can be used directly.

This oscilloscope board uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen, can be used as ARM test development board.Can freeze at any time waveform display (HOLD function).Comes 1Hz /3.3V square wave test signal source.

2.4" Oscilloscope with automatic, regular and one-shot modes, easy to capture the moment waveform.Available rising or falling edge trigger.Observable previous trigger waveform (negative delay).

18650 battery holder wire leads , the black and red two wire design is great for easily soldering and connecting.

Battery Type: 1/2/3/4 x 3.7V 18650 battery, can get the voltage 3.7V, 7.4V, 11.1V, 14.8V dc power supply.

The battery holder is fixed by a stainless steel spring. It is very convenient to install and replace the battery, and it is not easy to damage other parts.

The Nano can be powered via the Mini-B USB connection, 7-12V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.

The nano has 8 analog inputs,each of which provide 10 bits of resolution.By default they measure from ground to 5 volts, though is it possible to change the upper end of their range using the analogReference function. Analog pins 6 and 7 cannot be used as digital pins. Additionally, some pins have specialized functionality

It is a smallest, complete and breadboard friendly board. It has everything that for Arduino has (electrically) with more analog input pins and on board +5V AREF jumper.

Universal 2" black trailer hitch covers plugs insert fits standard 2 in X 2 in receiver tube ,classic III and classic IV hitch receiver openings.

This plug is manufactured from durable black rubber,corrosion resistant,fits snugly inside the trailer hitch tube, will not fall out.

Precise cutouts of standard square tow hitch receiver, It stays very snug into the receiver.

High Quality : Good condition,with high quality ,great performance, solid construction.

5 Megapixels OV5647 Sensor,1/4 CMOS sensor; Sensor optimum resolution: 2592 * 1944 p; 3.6mm focal length; Field of View : 72 degree ;support 3.3V power supply.

Camera Specifications:The camera is capable of 2592 x 1944 pixel static images,and also supports 1080 p @ 30 fps, 720 p @ 60 fps and 640 x480 p 60/90 video recording,with 5MP OV5647 1080p webcam sensor.

Universal Fit any 1 1/4 inch (1.25"") Class I and Class II receivers tube and easy installation.

Precise 1.25 inch X 1.25inch cutouts of standard square tow hitch receiver.

This plug is made of black rubber, fits snugly inside the trailer hitch tube, will not fall out.

MATERIAL:Housing be made of Nylon, mini Nylon ball transfer.

The diameter of rotated ball: 1/3", the top diameter of base: 4/7", the bottom diameter of base: 1/2".

FEATURES:360 universal transfer bearings.

Heated Tubing :12V/40W high temperature resistance heater (wire length 1M/39.4inches), operating temperature range:0~+280°C (0~+538°F)

Nozzle: 0.4mm Extruder Brass Nozzle Print Head, Compatible with 1.75mm PLA ABS 3D printer

30mm Length Extruder 1.75mm Tube, made from stainless steel ,compatible with 1.75mm PLA ABS 3D printer, reduces extrusion force and improve reliability of retractions thanks to the improved internal surface finish

This 1.25 inch plug is made of heavy duty black rubber, fits snugly inside the trailer hitch tube, will not fall out

Precise 1.25 inch X 1.25inch cutouts of standard square tow hitch receiver

Universal fit any 1 1/4 '' (1.25"") Class I and Class II receivers tube and easy installation

Dual ball bearings 8010 fan dimensions: 80x80x10mm /3.0 x 3.0 x 0.4inch ; Voltage: DC 12V ; Current: 0.1Amp ; Power: 1.5Watt ; Speed: 2800RPM ; Air Flow: 20.06CFM ; Noise: 22dBA, wire length is 15cm.

High quality dual ball bearings, more stable and Long life, suitable for continuous work. 12V 8010 fan is best for cooling the hottest and narrow spaces, circulating and exhausting stuffy air.

Computer and peripherals, graphics card peripheral cooling, cooling base fan, designed for projects that requires cooling or ventilation or as an replacement fan for various products , allows the fans to be laid flat or stand upright.

Digital voltmeter ammeter measure voltage DC 4.5V-100V; Operating current 0-50A.

Dual meter panel display is 0.39'' crisp and bright LED screen displays voltage & current value.

Multimeter panel with voltage & current equipped with calibration potentiometer, if there have any error, you can calibrated by yourself.

Dual core ESP-32 development board, 2.4GHz dual mode development board.There are two touch buttons, one is reset, the other is enable module to enter the halberd program mode.

The module is ESP-WROOM-32 module, the peripheral uses the USB serial port chip CP2102 to expand the micro USB interface, which can be directly debugged by a USB connected computer, and the data transmission is fast and stable.

ESP32 development board support lua program, easy to develop, support LWIP protocol, Freertos, three modes : AP, STA and AP + STA.

TMC2208 is an ultra-quiet two-phase stepper motor drive chip, continuous drive current 1.4A, peak current 2A, voltage range 4.75V-36V, 256 subdivision.

The flexible microPlyer interpolation unit provides up to 256 subdivisions, allowing perfect sinusoidal control even in systems with limited pulse frequencies; these are also designed because stealthChop2 ultra-quiet technology is widely used in 3D printing.

Compatible with existing 3D printer electronics, eliminating the expensive costs of redesign. It can replace the original TMC2100 A4988 DRV8825 LV8729, lower heat, especially for 3D printing market.

15pcs 3x5 18650 lithium batteries spacer plastic holder combination mounting bracket. Note: No Standalone lithium batteries are sold with the product

Excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties, battery pack bracket supports the battery, which makes the battery easy to dissipate and maintain, convenient combination, fixed specifications, and free combination.

18650 lithium cell spacer suitable for DIY combination of import batteries, battery holder has a card slot on the edge, you can freely combine the battery, the unique design and smart solid frame can be an excellent protector for your lithium ion battery pack.

TT motor robot metal gear motor operating voltage: 3V-6V DC, Output: 110 RPM

Deceleration ratio 1: 90, single shaft

All metal gear, blue plastic motor case

CD74HC4067 board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer, use the CD74HC4067 16-channel analog signal switch;Analog signal input: C0-C15 16 channels; Analog output: DIG; Channel control: S0-S3

It works with both digital and analog signals (the voltage can’t be higher than VCC), and the connections function in either direction.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.

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”).