{"title":"Display and Sound","description":"","products":[{"product_id":"7inch-hdmi-lcd-h-with-case-raspberry-pi","title":"7inch HDMI LCD H with Case Raspberry Pi","description":"\u003cp\u003e1024×600 Resolution, 7-inch Capacitive Touch Screen LCD Display, HDMI interface, supports various systems. Toughened glass capacitive touch panel, 6H hardness. 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It includes an I2C interface for convenient Arduino connection. The required Arduino library is included in Documents section. The connection scheme is as follows: VCC and GND for power supply, and SDA and SCL for data transfer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLCD display module with blue backlight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWide viewing angle and high contrast\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBuilt-in industry standard HD44780 equivalent LCD controller\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLCM type: Characters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan display 2-lines x 16-characters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperate with 5V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaterial: FR4 + LCD\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCommonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVSS: connected to ground\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVDD: connected to a +5V power supply\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVO: to adjust the contrast\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRS: A register select pin that controls where in the LCD’s memory you are writing data to. 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The characteristics of this display module are high brightness, self-emission, high contrast ratio, slim\/thin outline, wide viewing angle, wide temperature range and low power consumption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuper High Brightness (Adjustable)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuper High Contrast (Adjustable)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEmbedded Driver\/Controller\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay size: 0.96″\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eResolution radio:128 x 64\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInterface modes: I2C\/IIC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWorking voltage: 3.3V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl Chip: SSD1306\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOnly Need 2 I\/O Port to Control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFull Compatible Arduino, 51\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Seeed Studio","offers":[{"title":"Default Title","offer_id":51195545223470,"sku":null,"price":0.0,"currency_code":"QAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/1907\/2814\/files\/1.3-1.jpg?v=1761116800"},{"product_id":"3-5inch-hdmi-lcd-raspberry-pi-1","title":"3.5Inch HDMI LCD Raspberry Pi","description":"\u003cp\u003eA 3.5-inch HDMI LCD for Raspberry Pi is a small, portable touchscreen display that connects to a Raspberry Pi via its HDMI and GPIO\/SPI interfaces, providing a visual output and touch input for projects. 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The module has an automatic gain\/amplification (ACG) of the microphone: The module amplifies sounds with a low volume more, and sounds with a higher volume less.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 2.4-5.5V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput voltage: ~0-2.45V (1.25V average)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency range: 20-20,000Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdjustable maximum gain:\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e60dB (Gain pin floating)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e50dB (Gain pin connected to GND)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e40db (Gain pin connected to Vdd)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdjustable attack\/release ratio:\u003cbr\u003e1: 4000 (AR pin floating)\u003cbr\u003e1: 2000 (AR pin connected to Vdd)\u003cbr\u003e1: 500 (AR pin connected to GND)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwo 2mm holes for mounting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePCB dimensions: 25.4 x 14.1mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePinout:\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVdd: Supply voltage\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGND: Ground\/min\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGain: Pin to set the maximum gain (see above)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOut: Output of the module\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAR: Pin to set the attack\/release ratio\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SparkFun","offers":[{"title":"Default Title","offer_id":51195575992622,"sku":null,"price":0.0,"currency_code":"QAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/1907\/2814\/files\/images_af7c4ac2-74b9-48b9-8215-4825f4900684.jpg?v=1761120625"},{"product_id":"piezoelectric-passive-buzzer-44-14mm","title":"Piezoelectric Passive Buzzer 44*14MM","description":"\u003cp\u003eThe Piezoelectric Passive Buzzer, measuring 44mm in diameter and 14mm in height, is a compact and efficient audio signaling device. 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It is very compact and operates on a battery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: DC 2V- 9V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCurrent: 9mA (3V voltage\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReference distance: open ground 100 meters, 10-30 meters indoor environmental obstacles (3v voltage test, increasing the voltage from the greatly increased)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating frequency: 85MHZ --- 115MHZ (usually between 99-101 boot default frequency)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReceive way: as long as the 88-108MHz FM radio can receive, with FM feature phones.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency adjustment: adjustable capacitor\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 50 ohms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSize:2 cm * 1cm L*W\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThickness:0.48cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent\u003cbr\u003e9mA\u003c\/li\u003e\n\u003cli\u003eOperating Frequency\u003cbr\u003e85MHZ - 115MHZ\u003c\/li\u003e\n\u003cli\u003eOperating Voltage\u003cbr\u003eDC 2V- 9V\u003c\/li\u003e\n\u003cli\u003eOutput impedance\u003cbr\u003e50 ohms\u003c\/li\u003e\n\u003cli\u003eDimensions (LxWxH)\u003cbr\u003e20x10x3.5mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Flyrobo","offers":[{"title":"Default Title","offer_id":51195581464878,"sku":null,"price":0.0,"currency_code":"QAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/1907\/2814\/files\/mini-fm-wireless-microphone-transmitter-module-flyrobo-original-imagyqeveug4kdxz.webp?v=1761121007"},{"product_id":"1-2-3-4-6-7-8s-lithium-battery-power-display-module","title":"1\/2\/3\/4\/6\/7\/8S Lithium Battery Power Display Module","description":"\u003cp\u003eBattery type battery level display, select the corresponding solder on the solder pad to detect the voltage of the battery pack corresponding to 1S-8S\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003eDisplay battery quantity parameter: (Note: N represents the number of batteries)\u003cbr\u003e1. 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This little speaker has a sleek, portable design and delivers powerful bass and clear sound in a tiny package. Enjoy your favorite music with more volume and clarity whether you're at home or on the go.\u003c\/p\u003e\n\u003cp\u003eThis tiny amplifier speaker is the ideal audio partner for travel, outdoor activities, or just upgrading your everyday routine. 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Its key specifications include a 12mm diameter, 8.5mm height, and a rated voltage of 5V. 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The \"common cathode\" configuration means all the LED cathodes are wired together and connected to ground, requiring individual anodes to be connected to a positive voltage to light up specific segments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Common Anode\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: RED\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow Current Consumption\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh Brightness\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy to Use\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePCB Mounting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlack face and white segments\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIt is widely used in digital clocks, electronic meters, basic calculators, and other electronic devices that display numerical information.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SparkFun","offers":[{"title":"Default Title","offer_id":51199130534190,"sku":null,"price":0.0,"currency_code":"QAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/1907\/2814\/files\/0.56-inch-Red-1-Digit-7-Segment-LED-Display-10pin-1-1_460fbcaa-3bde-41e0-b652-b6c63bf31aaf.jpg?v=1761222981"},{"product_id":"reprapdiscount-full-graphic-smart-controller-12865","title":"Full Graphic Smart Controller 12864","description":"\u003cp\u003eThis Full Graphic Smart Controller contains a SD-Card reader, a rotary encoder and a 128 x 64 dot matrix LCD display.\u003c\/p\u003e\n\u003cp\u003eThe RepRapDiscount_Smart_Controller is a similar design with a 20x4 character based display.\u003c\/p\u003e\n\u003cp\u003eThis display board is intended to provide an easy and simple solution to interact with a 3D printer. Given that many of the 3D printer's mainboards are based on the RAMPS design this display board is supported by many other mainboards.\u003c\/p\u003e\n\u003cp\u003eWhen using a RAMPS board the Full Graphic Smart Controller is simple to connect using the \"smart adapter\" which connects directly to an Arduino Mega 2560. The Full Graphic Smart Controller comes with a 12864 (128x64) LCD.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis 12864 RepRapDiscount full graphic smart LCD controller compatible with\u003c\/li\u003e\n\u003cli\u003eRamps 1.4 \/ 1.5\/ 1.6, SKR V1.1, V1.3, SKR Pro, MKS Gen V1.4 control boards and supported by Marlin firmware.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis LCD smart controller contains an SD-Card reader, a rotary encoder and a 128×64 LCD display and easily could be connected to RAMPS board using the “smart adapter”.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy installation using Marlin Firmware.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAll functions like calibration, axes movements, Bed levelling could be done by just using the rotary encoder of Smart Controller and no need for a computer to operate 3D printer.\u003cbr\u003eInsert the SD card and Print 3D designs without PC, just with a g-code design stored on the SD card.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RepRap Discount","offers":[{"title":"Default Title","offer_id":51267105063214,"sku":null,"price":0.0,"currency_code":"QAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/1907\/2814\/files\/201608291430093078996_b7af26b7-9c43-49ad-ac68-3d0f480e3434.jpg?v=1763042769"},{"product_id":"velocity-of-sound-apparatus","title":"Velocity Of Sound Apparatus","description":"\u003cp\u003eThis dual purpose apparatus provides a compact facility for the measurement of the velocity of sound in air and also for the analysis of standing waves. It requires an audio signal generator and a dual beam oscilloscope (not included). A phase measurement between the speaker and microphone signals is made on an oscilloscope. The distance required to traverse through a 360° phase shift is noted. Knowing the frequency and distance, the speed of sound is computed. With the reflector in place a standing wave can be generated. Nodes and antinodes can easily be seen from the amplitude variations on the CRO.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePrimary Function: Used to find the speed of sound in air at room temperature by using the principle of resonance.\u003c\/p\u003e\n\u003cp\u003eMeasurement Method: Requires identifying two resonance positions using a tuning fork and an adjustable air column length, and then calculating the velocity using the formula. \u003c\/p\u003e\n\u003cp\u003eMain Components: A long, transparent, graduated tube (e.g., plastic or acrylic, often around 1 to 1.2 meters long). A movable water reservoir (vessel) to easily adjust the water level and thus the length of the air column. A support stand and clamps to hold the tube and a tuning fork in place. A rubber pipe for connecting the reservoir to the tube. 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