Vector Four Enginnering/Arduino Shop/ Electronics Supermarket

I2C MODULE - The PCF8574 is a generic I2C to 8-bit I/O device and the module can be repurposed for other uses besides driving LCD modules. - Provides I2C to parallel data conversion - Backlight enable jumper - Contrast control potentiometer 0 0x27 I2C default address. Solder jumper selectable from 0x20 – 0x27 - 100kHz I2C clock speed - 5V operation typical, but also operates at 3.3V. - This LCD I2C interface adapter can be added to a 16 x 2 or 20 x 4 character LCD display with a standard parallel interface to make it I2C compatible. It can also be repurposed for other I2C to parallel tasks. Price 200 Birr https://vector4engineering.com/product/i2c-module/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

0.96 INCH OLED MODULE - It supports many chips: compatible with Arduino Mega, Raspberry pi, 51 MCU, STIM 32, etc. - Resolution: 128 x 64; - View angle: more than 160 degree; - Support voltage: 3.3V-5V DC; - Power consumption: 0.04W during normal operation, full screen lit 0.08W - Embedded driver IC: SSD1306; - Communication: I2C/IIC Interface, only need 2 I/O ports; - Compatible with MMDVM, Pi-Star - Self-luminous: needn’t backlight, the display can self-luminous; - It has high contrast, bright and crisp dots, even tiny fonts quite readable - About fonts: no embedded fonts inside the OLED controller, user can create the fonts through the font generation software - Applications: 0.96 inch OLED module for showing graphical and textual information directly on your micro-controller projects; Price 300 Birr https://vector4engineering.com/product/oled/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301

ESP32 WROOM WIFI BOARD+Bluetooth ESP32 Module: ESP-WROOM-32 from Espressif. - 2.4GHz dual core microprocessor equipped with - 4MB SPI flash memory. Support up to 16MB of flash memory Connectivity - WiFi 802.11 b / g / n. - Security WEP, WPA / WPA2 PSK / Enterprise. - Integrated cryptographic chip supporting AES / SHA2 / Elliptical Curve Cryptography / RSA-4096 algorithms - Maximum power for data transfer: 19.5 dBm@11b, 16.5 dBm@11g, 15.5 dBm@11n - Sensitivity max. reception: -97 dBm - Bluetooth 4.0 LE 32 Inputs / Outputs - 26x Digital I / O (3.3V). All outputs can be PWM - 18x analog inputs - 3x UART - 3x SPI - 2x I2S - 2x DAC - 2x I2C Integrated sensors - Hall Effect - 10x inputs for capacitive touch interface Sleep Mode Consumption: 5 μA Price 600 Birr https://vector4engineering.com/product/esp-32/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase

NODEMCU ESP8266 - NodeMCU is an open-source Lua based firmware and development board specially targeted for IoT based Applications. - It includes firmware that runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which is based on the ESP-12 module. - Microcontroller: Tensilica 32-bit RISC CPU Xtensa LX106 - Operating Voltage: 3.3V - Input Voltage: 7-12V - Digital I/O Pins (DIO): 16 - Analog Input Pins (ADC): 1 - UARTs: 1 - SPIs: 1 - I2Cs: 1 - Flash Memory: 4 MB - SRAM: 64 KB - Clock Speed: 80 MHz - USB-TTL based on CP2102 is included onboard, Enabling Plug and Play - PCB Antenna - Small Sized module to fit smartly inside your IoT projects Price 400 Birr https://vector4engineering.com/product/nodemcu-esp8266/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

GSM SIM900A MODULE - Dual Band 900/1800 MHz - GPRS multi-slot class 10 / 8GPRS mobile station class B - Complies with GSM phase 2/2 + - Dimensions: 49 x 47 mm. - Weight: 38 g - Control via AT commands (GSM 07.07, 07.05 and SIMCOM enhanced AT commands) - Supply voltage range: 5V - Low power consumption: 1.5mA (sleep mode) - SIM900A can search these two bands automatically. - The frequency bands can also be set by AT Commands. - The baud rate is configurable from 1200-115200 through AT command. - The GSM/GPRS Modem has internal TCP/IP stack to enable you to connect with internet via GPRS. - GPRS multi-slot class 10/8GPRS mobile station class B, compliant to GSM phase 2/2+, Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands). Price 1100 Birr https://vector4engineering.com/product/sim900a-module/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase

3D PRINTER HEATBED - PCB Heat Bed MK2B Black(with cable) - 12V/24V Dual Power MK2B PCB Heated Bed Hot Bed For Prusa 3D Printer - Dimensions: 214x214x0.8mm - Color: Black - Power Input: 12V / 24V - Power: 120W - Laminate FR4 1.6±0.15mm - 2 layer, 35μm copper - Black Soldermask – both sides - White Silkscreen – both sides - Technology: aluminum plate - Copper plated holes - Resistance: under 12V voltage, resistance 1.2 ohms; under 24V voltage, resistance 4.8 ohms - Double-sided, without cable, heating uniformity, smooth printing . - Borosilicate materials, high transparency. - Heating the adhesion are good, plastic parts easily separated after cooling. - Eliminates the trouble of replace the special plastic film, does not exist the special plastic film reduce viscosity problem. - Suitable for Reprap machine heated circuit boards. Price 1400 Birr https://vector4engineering.com/product/heatbed/

5A STEPPER MOTOR DRIVER -Stepper Motor Driver Controller 0.2-5A CNC Router HY-DIV268N-5A 12-48V. - Average current control, two-phase sinusoidal current output. - DC 12~48V power supply, the internal integration of 12V and 5V regulator. - Optically isolated signal input/output Protection against overvoltage, undervoltage, overcurrent and short circuit white -The input current is from 1 to 5 amps, select the drive to stepper motor. Output current 0.2A ~ 5A - Two-phase hybrid stepper motor dynamic voltage 12 to 48V, current is less than 5A outer diameter 35 to 86mm. - This driver uses drive current loop subdivision control, motor torque ripple is very small, low speed operation is very smooth, almost no vibration and noise. High-speed torque is much higher than other two-phase motors, high positioning accuracy. Widely used in engraving machine, CNC machine tools, packaging machinery and other high-resolution requirements on the device. Price 2000 Birr https://vector4engineering.com/product/5a-driver/

GRBL CNC SHIELD - 4 Axis Arduino CNC shield - GRBL 0.8c compatible. - 4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins D12 and D13) - 2 x End stops for each axis (6 in total) - Spindle enable and direction - Coolant enable - Uses removable A4988 compatible stepper drivers. (A4988, DRV8825 and others) - Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping ) - Runs on 12-36V DC. (At the moment only the Pololu DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.) - This PCB is perfect if you want to assemble your first CNC low cost machine such as a laser cutter, using an Arduino Uno. - It is totally compatible with the popular GRBL firmware. - It supports up to 4 motors with A4988 or DRV8825 drivers. Price 300 Birr https://vector4engineering.com/product/cnc-shield/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301

AC PUMP This is a submersible water pump, with high-performance, low noise, it is a perfect supply for fish tanks or aquarium. Made of high-grade material, which is non-toxic, safe, energy-saving, durable and friendly to the environment. It is a great pump for water fountain, fish pond, etc. - AC : 220-240V/50Hz - Hmax :2.1m - Flow Rate :1500L/h - 15W Price 1300 Birr Address Megenagna Zefmesh Grandmall 3rd floor 301 0922787347/0924468599 VECTOR FOUR ENGINEERING

4A STEPPER MOTOR DRIVER - Input Current: 0~5A - Output Current: 0.5~4.0A - Control Signal: 3.3~24V - Power (MAX): 160W - Micro Step: 1, 2/A, 2/B, 4, 8, 16, 32 - H bridge bipolar constant current drive. - I/P: 9-42VDC Micro step - You can set its micro step and output current with 6 DIP switch. - There are 7 kinds of micro steps (1, 2 / A, 2 / B, 4, 8, 16, 32) and 8 kinds of current control (0.5A, 1A, 1.5A, 2A, 2.5A, 2.8A, 3.0A, 3.5A) in all. And all signal terminals adopt high-speed optocoupler isolation, enhancing its anti-high-frequency interference ability. As a professional device, it is able to drive 57, 42-type two-phase, four-phase, hybrid stepper motor. Price 1400 Birr https://vector4engineering.com/product/4a-driver/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

ESP32 CAM WIFI + BLUETOOTH CAMERA MODULE - DC 5V Dual-core Wireless with OV2640 Camera TF Card Module - Current: 2A - Dimensions: 2.7x4cm/1.06×1.57inch WITH OV2640 CAMERA - Low-power dual-core 32-bit CPU for application processors. - Supports OV2640 and OV7670 cameras, built-in flash - Supports TF card - Supports image WiFi upload ESP32-CAM WIFI BLUETOOTH BOARD - Main frequency up to 240MHz, computing power up to 600 DMIPS - Built-in 520 KB SRAM, external 4M PSRA - Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC - Supports multiple sleep modes - Embedded Lwip and Free RTOS - Support STA/AP/STA+AP working mode - Supports Smart Config/AirKiss one-click distribution network. - Supports secondary development Price 700 Birr https://vector4engineering.com/product/esp32-cam/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 VECTOR FOUR ENGINEERING

HC-05 BLUETOOTH MODULE Price 350 Birr https://vector4engineering.com/product/hc-05-bluetooth-module/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

WHEEL Price 150 Birr https://vector4engineering.com/product/wheel/ Address Megenagna Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

LIMIT SWITCH - Spacing contact is small, short stroke of action, based on small power, fast-break with Roller Limit Lever - Made of metal and plastic material, high quality and long Lasting - Widely used in 3d printer, electronic equipment, microwave, refrigerator, computer Price 100 Birr https://vector4engineering.com/product/limit-switch/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

GEARED DC MOTOR Price 200 Birr https://vector4engineering.com/product/geared-dc-motor/ Address Megenagna Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

COMPRESSION FORCE SENSOR - DYMH-103 Mini Tension and Compression Force Sensor Load Cell - Weight range 20Kg - DYMH-103 load cell strain gauge, small size, low height, Stainless steel, corrosion-resistant - Sensitivity: 1.0-1.5 mV/V - Comprehensive error:≤±0.2%F.S - Creep: ≤±0.2%F.S - Input resistance: 400±10Ω - Output Resistance: 350±10Ω - Safe Overload: ≤150% F.S - Excitation voltage: 10V-12V - High accuracy, good stability,0-20kg Price 1500 Birr https://vector4engineering.com/product/dymh-103/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING

FLEX SENSOR - Flex Sensor 2.2″ - Angle Displacement Measurement - Bends and Flexes physically with motion.As the sensor is flexed, the resistance across the sensor increases. - Flat Resistance: 25K Ohms ±30% - Bend Resistance: minimum 2 times greater than the flat resistance at 180° pinch bend - Power Rating : 0.5 Watts continuous; 1 Watt Peak Possible Uses: Robotics, Gaming (Virtual Motion), Medical Devices, Computer Peripherals, Musical Instruments, Physical Therapy etc. Price 1200 Birr https://vector4engineering.com/product/flex-sensor/ Address – Megenagna, Zefmesh Grandmall 3rd floor 301 0922787347 Kase/0924468599 Haben VECTOR FOUR ENGINEERING