Sri Electronics & Embedded Solutions

The Raspberry Pi Foundation has released a new version of its flagship model, the Raspberry Pi 4 Model B with 8 GB Ram. In addition to the models that come with 2GB and 4GB of RAM, there’s a new 8GB RAM model.

As always, you get a single-board computer that is the size of a deck of cards. It has an ARM-based CPU, many ports, Wi-Fi, Bluetooth and a big community of computer enthusiasts. You’ll be able to run applications that require more RAM, whether you use the Raspberry Pi to run a server or as a desktop computer.

All other hardware is the same as before except the RAM variation in this new Launch.

What else has changed?

To supply the slightly higher peak currents required by the new memory package, they have shuffled the power supply components on the board, removing a switch-mode power supply from the right-hand side of the board next to the USB 2.0 sockets and adding a new switcher next to the USB-C power connector. While this was a necessary change for this upgrade.

Key Features and Specifications of Raspberry Pi 4 Moedl B with 8GB RAM:

Faster processing:-

With one of latest Broadcom 2711; Quad-Core Cortex A72 (ARM V8-A)  64-bit SoC Clocked at  1.5GHz  processor improved power consumption; and thermals on the Pi 4+B means that the CPU on the BCM2837 SoC can now run at 1.5 GHz; a 20% increase on the previous Pi 3 model (which ran at 1.2GHz).

Video performance on Pi 4 B is upgraded with dual-display support at resolutions up to 4K via a pair of micro-HDMI ports; hardware video decode at up to 4Kp60 which supports H 265 Decode (4Kp60); H.264, and MPEG-4 decode (1080p60).

Faster wireless:-

A significant change on the Pi 4 B compared to the previous Pi 3 models is the inclusion of a new faster; dual-band wireless chip with 802.11 b/g/n/ac wireless LAN.

The dual-band 2.4GHz and 5GHz wireless LAN enables faster networking with less interference and the new PCB antenna technology allow better reception.

Latest 5.0 Bluetooth allows you to use a wireless keyboard/trackpad with more range than before without extra dongles; keeping things nice and tidy.

Enhanced Ethernet Connectivity:-

The Pi 4 B has significantly faster-wired networking with USB 3.0 technology; thanks to an upgraded USB/LAN chip; and you should see speeds that are 10x faster than on previous models of the Pi.

The GPIO header remains the same, with 40 pins; fully backwards-compatible with previous boards as on the previous three models of Pi. However; it should note that the new PoE header pins may contact components on the underside of some HATs; like Rainbow HAT. Some standoffs will prevent any mischief from occurring though!

Additional Information:

• Item Code: SEES110
• Production Capacity: 1000 NOS
• Delivery Time: 2-3 DAYS
• Packaging Details: CARTOON BOXES

The Raspberry Pi 4 Model B is the newest Raspberry Pi computer made, and the Pi Foundation knows you can always make a good thing better! And what could make the Pi 4 better than the 3? How about a faster processor, USB 3.0 ports, and updated Gigabit Ethernet chip with PoE capability? Good guess - that's exactly what they did!

The Raspberry Pi 4 is the latest product in the Raspberry Pi range, boasting an updated 64-bit quad core processor running at 1.4GHz with built-in metal heatsink, USB 3 ports, dual-band 2.4GHz and 5GHz wireless LAN, faster (300 mbps) Ethernet, and PoE capability via a separate PoE HAT.

This version comes with 4GB of RAM, but we also have versions with 1 and 2 GB if you like.

Pi 4 B is upgraded with Latest High-Performance Quad-Core 64-bit Broadcom 2711, Cortex A72  processor clocked at 1.5GHz speed. Which is designed to use 20% less power or offer 90% greater performance than its old version. Hardware upgrade on Pi4 developed for more faster performance not only the loading time with all new 1GB/2GB and 4GB LPDDR4 SDRAM variants but also in connectivity with Dual-band 2.4GHz and 5GHz, 802.11 b/g/n/ac wireless LAN and PoE capability via a separate PoE HAT. Addition to it USB 3.0, improve the transfer speed by 10x than USB 2.0 to provide you significantly faster true Gigabit internet experience.

Though the Pi 4 has type C USB port for 5V 3A input power capacity, new Hardware on Pi 4 even required less power than the previous versions therefore old power adapter can provide plenty of power to the chip, Ethernet, and any USB add-ons you plug in on board. You can buy Official Adapter for Raspberry Pi 4 at our store ElectronicsComp.com 

With upgraded hardware of Pi 4, you can still use all your favourite Raspbian or PIXEL software with this update. You must make sure to upgrade your Raspbian operating system install to the latest version so that the firmware can support the new chips! Old SD cards from previous releases will not work without an upgrade!

Specifications Of Raspberry Pi 4 Model B with 4 GB RAM:-

• Model-Raspberry Pi 4 Model-B
• Processor- Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
• RAM Memory - 4 GB LPDDR4 SDRAM
• Connectivity:-

1.  2 × USB 2.0 Ports
2.  2 × USB 3.0 Ports
3.  2.4 GHz and 5.0 GHz IEEE 802.11b/g/n/ac wireless LAN, BLE Gigabit Ethernet Bluetooth 5.0

• Operating Power:-

1.  5 Volt 3 Ampere DC via GPIO Header
2.  5 Volt 3 Ampere DC via USB Type-C Connector
3.  Power Over Ethernet (PoE)–Enabled (requires separate PoE HAT)

•  GPIO- (Fully backward compatible with previous boards)
• Multimedia:- 

1.  H.264 (1080p60 decode, 1080p30 encode);
2.  H.265 (4Kp60 decode);
3.  OpenGL ES, 3.0 Graphics

• Video and Sound:-

1.  2 × micro HDMI ports (up to 4Kp60 supported)
2.  2-Lane MIPI CSI Camer a Port
3.  2-Lane MIPI DSI Display Port
4.  4-Pole Stereo Audio and Composite Video Port

• Clock Speed- 1.5 GHz
• Micro-SD Card Slot- Yes (FAT32 format), support maximum 32G Micro SD Card Memory Features
• Operating Temperature Range- 0ºC to 50ºC

Additional Information:

• Item Code: SEES111
• Production Capacity: 1000 NOS
• Delivery Time: 2-3 DAYS
• Packaging Details: CARTOON BOXES

Want to controller stepper Motor from Arduino, Raspberry Pi or any other Micro-controller? Well then this stepper motor driver will simplify your coding and will give you more flexibility in controlling the stepper motor.

The DRV8825 stepper motor driver carrier is a breakout board for TI’s DRV8825 micro-stepping bipolar stepper motor driver. The DRV8825 features adjustable current limiting, over-current and over-temperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 – 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling).

This product is a carrier board or breakout board for TI’s DRV8825 stepper motor driver; we therefore recommend careful reading of the DRV8825 datasheet before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to 2.2 A output current per coil. 

Features of DRV8825 Module:-

• Simple step and direction control interface
• Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
• Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
• Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
• 45 V maximum supply voltage
• Built-in regulator (no external logic voltage supply needed)
• Can interface directly with 3.3 V and 5 V systems
• Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout
• Short-to-ground and shorted-load protection
• 4-layer, 2 oz copper PCB for improved heat dissipation
• Exposed solderable ground pad below the driver IC on the bottom of the PCB

Specifications of DRV8825 Module:-

• Minimum operating voltage: 8.2V
• Maximum operating voltage: 45V
• Continuous current per phase: 1.5 Amp
• Maximum current per phase: 2.2 Amp
• Minimum logic voltage: 2.5V
• Maximum logic voltage: 5.25V
• Microstep resolutions: Full, 1/2, 1/4, 1/8, 1/16 and 1/32
• Reverse voltage protection?: No

* Product Images are shown for illustrative purposes only and may differ from actual product.

Additional Information:

• Item Code: SEES7
• Production Capacity: 1000 NOS
• Delivery Time: 2-3 DAYS
• Packaging Details: CARTOON BOXES

Description:-

A vibration switch, also called spring switch or shock sensor, is an electronic switch which induces shock force and transfers the result to a circuit device thus triggering it to work. It contains the following parts: conductive vibration spring, switch body, trigger pin, and packaging agent.

Knock sensor module, a digital 13 interface and built-in LED build a simple circuit to produce percussion flasher.

The knock sensor, detects the knocks and the taps. It can work like a switch. The sensor sends data momentarily to the board. To keep the LED on, the button state change codes should be used. So the sensor will work as a switch.

Additional Information:

• Item Code: SEES143
• Production Capacity: 1000 NOS
• Delivery Time: 1-2 DAYS
• Packaging Details: CARTOON BOXES

The Infrared IR Wireless Remote Control Module Kit for Arduino consists of ultra-thin infrared remote control and 38KHz infrared receiver module. This mini slim infrared remote control with 20 function keys. Its transmit distances up to 8 meters. Ideal for handling a variety of equipment indoors.

IR receiver module can receive a standard 38KHz modulation remote control signal. You can decode the remote control signal through Arduino programming. You can design a variety of remote control robots and interactive works.

Note: The Connecting wire is available in a different color while shipping the product you may get any one of them.

1. Depending on the surrounding environment and the sensitivity of the receiver the transmission distance may be affected.
2. Photo-detector and preamplifier in one package.
3. Internal filter for PCM frequency.
4. Improved shielding against EMI.

1 x Infrared IR Wireless Remote.

1 x IR Receiver.

3 x F-F Jumper cable.

1 x LED.

* Product Images are shown for illustrative purposes only and may differ from actual product.

Additional Information:

• Item Code: SEES32
• Production Capacity: 1000 NOS
• Delivery Time: 2-3 DAYS
• Packaging Details: CARTOON BOXES

The CNC Shield V3.0 allows you to build a engraving machine, 3D printer, mini CNC and other similar devices using your Arduino. It is designed as a shield and can plug on top of an Arduino requiring no external connections and wiring. There are 4 slots on the board for plugging in stepper motor drive module which can drive 1 stepper motor each. Controlling each step stepper motor requires only two IO pins on the Arduino. Just insert this Arduino CNC Shield V3.0 onto an Arduino UNO, and install the GRBL firmware, you can then quickly build a DIY CNC engraving machine. 

Features:-

• The extension board can be used for Small CNC routers, Carving Machine, 3D Printers, DIY Laser Cutters, and almost any project where you need to control a stepper motors with high precision
• This shield allows you to control upto 4 stepper motors
• Controller each stepper motor requires 2 IO Pins only, which saves a lot of IO Pins for other purposes
• Arduino compatible
• Latest Arduino CNC Shield Version 3.10
• GRBL 0.9 compatible. (Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals)
• Supports PWM Spindle and direction pins
• 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)
• Supports Coolant enable
• Supports removable A4988 compatible stepper drivers. (A4988, DRV8825 and others) (Not Included)
• Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping )
• Compact design.
• Stepper Motors can be connected with 4 pin molex connectors or soldered in place.
• Runs on 12-36V DC. (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
• Uses removable A4988 or DRV8825 compatible stepping driver.

* Product Images are shown for illustrative purposes only and may differ from actual product.

Additional Information:

• Item Code: SEES9
• Production Capacity: 1000 NOS
• Delivery Time: 2-3 DAYS
• Packaging Details: CARTOON BOXES

Description:-

16x2 Keypad LCD Shield is a solution for Arduino lovers those who want to work with LCD and arduino without using external switches. It includes a 2x16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD. Just one Analog Pin 0 is used to read the five pushbuttons. The LCD shield supports contrast adjustment and back-lit on/off functions. It also exposes five analog pins for easy analog sensor plugging and display. An on board power LED is also provided.

This design is great since easily lets you keep connecting sensors to the rest of the pins, and use it for monitoring or menu selection with the push buttons even for gaming. Often project applications require testing or debugging. Displaying information right away help on most occasions when a computer is not at reach. If you are planning to build something not attached to a computer and you need to check what is going on when you place it on position, this addition will prove very valuable to make sure the program is running well.

The used LCD pins are not exposed on top side of the board leaving only the unused ones. This way, conflict with LCD pins on top of the board will not happen anymore. 

Specifications:-

• Blue Backlight with white words
• uses 4 Bit Arduino LCD Library
• Left, Right, Up, Down and Select buttons
• Screen contrast adjustment
• Arduino Reset button
• Operating Voltage is 5V

Pin Connections:-

Pin             Function

Analog 0     Buttons (select, up, right, down and left)

Digital 4     DB4

Digital 5     DB5

Digital 6     DB6

Digital 7     DB7

Digital 8     RS (Data or Signal Display Selection)

Digital 9     Enable

Additional Information:

• Item Code: SEES93
• Production Capacity: 1000 NOS
• Delivery Time: 1-2 DAYS
• Packaging Details: CARTOON BOXES