{"title":"Sensor","description":null,"products":[{"product_id":"sparkfun-soil-moisture-sensor-with-screw-terminals","title":"SparkFun Soil Moisture Sensor (with Screw Terminals)","description":"\u003ch2\u003eThe SparkFun Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials.\u003c\/h2\u003e\n\u003cp\u003eThe soil moisture sensor is pretty straightforward to use. The two large, exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be, resulting in a lower resistance and a higher SIG out. This version of the Soil Moisture Sensor includes a 3-pin screw pin terminal pre-soldered to the board for easy wiring and setup.\u003c\/p\u003e\n\u003cp\u003eTo get the SparkFun Soil Moisture Sensor functioning, all you will need is to connect the VCC and GND pins to your micro:bit or  Arduino-based device (or compatible development board). You will receive a SIG out, which will depend on the amount of water in the soil. One commonly known issue with soil moisture senors is their short lifespan when exposed to a moist environment. To combat this, we’ve had the PCB coated in gold finishing (ENIG, or Electroless Nickel Immersion Gold).\u003c\/p\u003e\n\u003cp\u003eNote: Check the Hookup Guide below for assembly and weatherproofing instructions, as well as a simple example project that you can put together yourself!\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/soil-moisture-sensor-hookup-guide?_ga=2.91321690.1711993951.1506591009-1054668848.1501639327\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e Getting Started with the Soil Moisture sensor guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"300\" height=\"168.75\" src=\"https:\/\/www.youtube.com\/embed\/1h6D_pkeoks\" frameborder=\"0\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"SparkFun","offers":[{"title":"Default Title","offer_id":1579780177950,"sku":"SEN-13637","price":60.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/13637-Action.jpg?v=1506595842"},{"product_id":"fischertechnik-colour-sensor","title":"fischertechnik Optical Color Sensor","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"h3 productSubHeadline\"\u003eIdeal for color recognition\u003c\/p\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":4668251373598,"sku":"128599","price":326.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/128599-Farbsensor.jpg?v=1555769814"},{"product_id":"mini-switch","title":"fischertechnik Mini switch (button\/ touch sensor)","description":"\u003cp\u003eThe fischertechnik touch sensor\u003c\/p\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":19268711153760,"sku":"37783","price":52.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/37783-Mini-Taster.jpg?v=1555766589"},{"product_id":"photo-resistor-yellow","title":"fischertechnik Photo resistor","description":"\u003cdiv class=\"rte\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"h3 productSubHeadline\"\u003eFor measuring brightness\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":19268717019232,"sku":"32698","price":204.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/32698-Fotowiderstand.jpg?v=1555767145"},{"product_id":"photo-transistor-assembled","title":"fischertechnik Photo transistor assembled","description":"\u003cdiv class=\"rte\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cp class=\"h3 productSubHeadline\"\u003eElectronic switch that reacts to light\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":19268734353504,"sku":"36134","price":38.3,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/36134-Fototransistor-montiert.jpg?v=1555767327"},{"product_id":"reversing-switch","title":"fischertechnik Reversing switch","description":"\u003cdiv class=\"rte\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"rte\"\u003e\n\u003cp class=\"h3 productSubHeadline\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":19268736254048,"sku":"36708","price":116.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/36708-Polwendeschalter_98947847-b179-4e7b-a4d3-9974dd9b6d91.jpg?v=1555768028"},{"product_id":"fischertechnik-ir-track-sensor","title":"fischertechnik IR-Track Sensor","description":"\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"h3 productSubHeadline\"\u003eIdeal for lane recognition\u003c\/p\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":19268781572192,"sku":"128598","price":286.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/128598-IR-Sensor.jpg?v=1555770718"},{"product_id":"grove-humidity-and-temperature-sensor","title":"Grove - Humidity and Temperature Sensor","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cspan\u003eGrove - Temperature \u0026amp; Humidity Sensor is a high quality, low-cost digital temperature and humidity sensor based on the DHT11 module. \u003c\/span\u003e\u003c\/p\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv\u003eDHT11 is the most common temperature and humidity module for Arduino and Raspberry Pi. It is widely favored by hardware enthusiasts for its many advantages. E.g. Low power consumption and excellent long-term stability. Relatively high measurement accuracy can be obtained at a very low cost. The single-bus digital signal is output through the built-in ADC, which saves the I\/O resources of the control board.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eOn top of that, Grove - Temperature \u0026amp; Humidity Sensor uses the upgraded version of DHT11. The new version of the DHT11 module replaces resistive humidity components with capacitive humidity components, the temperature and humidity measurement range is wider, temperature resolution is higher. \u003c\/div\u003e","brand":"Seeed","offers":[{"title":"Default Title","offer_id":31714559328352,"sku":"101020011","price":65.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/httpsstatics3.seeedstudio.comseeedimg2017-020es2atc90jsew4xnsnybpvak.jpg?v=1578843865"},{"product_id":"light-barriers-led-9v-assambled-0-01a-1","title":"Light barriers LED 9V assambled 0.01A","description":"\u003cp\u003eA light-emitting diode is a semiconductor element that transmits light. The abbreviation is LED. This is the abbreviation for “light-emitting diode.” When electrical current flows through the diode, it emits light. The wavelength (light color) depends on the semiconductor material and abatement. The LED emits white light. The light barrier LED is used as a transmitter for a light barrier.\u003c\/p\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rte\"\u003e\u003c\/div\u003e","brand":"fischertechnik","offers":[{"title":"Default Title","offer_id":37052079931547,"sku":"162135","price":38.3,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/162135-Lichtschranken-LED-montiert_ba376a84-4243-45c0-b12a-be88e116f6eb.jpg?v=1606394031"},{"product_id":"light-sensor-sticker","title":"Light sensor sticker","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eLight sensor stickers turn light levels into signals to control your paper circuits!  Each pack includes 6 light sensor stickers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Chibitronics Light Sensor sticker is a paper-friendly, ultra-thin and stickerable light sensor. The copper pads are designed so you can get started with the sensor without having to design any circuits – it clips perfectly into the Chibi Chip + Clip when you align the sensor output to pin 5 of the Chibi Chip. The light sensor will turn visible light shining on the sticker into a voltage ranging from 0V to 3.3V, and it’s optimized for use in a bright indoor setting. The light sensitive area is clearly highlighted on the sticker with a “sun” icon. This six-pack of stickers is perfect for educators, crafters and hobbyists who already have their own Love to Code parts, and it also works with other microcontrollers, such as the MicroBit, Arduino, and Circuit Playground.\u003c\/p\u003e\n\u003cp\u003eHighlights:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePaper-friendly, ultra-thin and stickerable light sensor\u003c\/li\u003e\n\u003cli\u003eTurns visible light shining on the sticker into an analog voltage ranging from 0V to 3.3V\u003c\/li\u003e\n\u003cli\u003eOptimized for use in bright indoor lighting conditions\u003c\/li\u003e\n\u003cli\u003eSix-pack of light sensor stickers only, perfect for educators, crafters and hobbyists who already have the other Love to Code materials\u003c\/li\u003e\n\u003cli\u003eWorks with any other microcontroller that supports 3.3V analog inputs, including Microbit, Arduino, and Circuit Playground. \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chibitronics","offers":[{"title":"Default Title","offer_id":37408626737307,"sku":"0735850001470","price":144.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/lightsensorsticker_1024x1024_a181555d-5679-4ad3-8ef9-92c768958979.jpg?v=1608992401"},{"product_id":"kitronik-mini-prong-soil-moisture-sensor-for-bbc-micro-bit","title":"Kitronik 'Mini' Prong Soil Moisture Sensor for BBC micro:bit","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Mini Prong soil sensor is a short version of the original\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/kitronik.co.uk\/products\/5647-prong-soil-moisture-sensor-for-bbc-microbit\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eProng sensor\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003ethat has been specially adapted for use with the\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.etchkshop.com\/collections\/bbc-micro-bit\/products\/kitronik-smart-greenhouse-kit-for-the-bbc-micro-bit\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eKitronik Greenhouse Kit\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003efor BBC micro:bit.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Mini Prong soil moisture sensor for BBC\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003emicrobit\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eis a sensor board that can be connected to a BBC micro:bit with crocodile clips to monitor the moisture present in the soil. The two conductive tines are placed into the soil. Any water or moisture in the soil will conduct to give an analogue voltage that can be read by the BBC micro:bit.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eMini Prong is powered from the 3V supply of the BBC micro:bit. Use either the USB or JST connector on the BBC micro:bit to power the circuit.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe board has been designed to work with croc-clips, to connect between the Mini Prong and the BBC micro:bit. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen fitted to the Mini Prong moisture sensor, the micro:bit can be coded via any of the micro:bit editors, such as the Microsoft\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/makecode.microbit.org\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMakeCode\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eeditor. The Datasheet at the foot of this page includes technical information and a MakeCode blocks coding example.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eNote:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTo ensure that the mini Prong moisture sensor has a long and fulfilling life, it is better to write your code to perform a moisture check every so often rather than continuously. When the check is performed continuously it promotes rapid erosion of the electrodes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eFeatures:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMeasure soil moisture levels.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAttach to the micro:bit with crocodile clips.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCompatible with both BBC micro:bit V1\u003cspan data-mce-fragment=\"1\"\u003e and \u003c\/span\u003eBBC micro:bit V2\u003cspan data-mce-fragment=\"1\"\u003e.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWrite code for it with any micro:bit coding editor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eContents:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1 x Prong Soil Moisture Sensor for microbit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eDimensions:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLength: 33mm.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHeight: 43mm.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePCB Thickness: 1.6mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eRequires:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1 x\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eBBC micro:bit\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eor\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eBBC micro:bit V2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eResources:\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003ca title=\"mini prong moisure sensor for micro:bit datasheet\" href=\"https:\/\/resources.kitronik.co.uk\/pdf\/56107-kitronik-mini-prong-soil-moisture-sensor-datasheet.pdf\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/resources.kitronik.co.uk\/pdf\/56107-kitronik-mini-prong-soil-moisture-sensor-datasheet.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0254\/1191\/1743\/files\/pdf_icon_8e42f9e6-ae48-4250-9bd9-3a2c59c1eccb.gif?v=1600101273\" alt=\"pdf_icon.gif\" width=\"25\" height=\"24\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0254\/1191\/1743\/files\/pdf_icon_8e42f9e6-ae48-4250-9bd9-3a2c59c1eccb.gif?v=1600101273\"\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kitronik","offers":[{"title":"Default Title","offer_id":37777566269595,"sku":"56107","price":21.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0214\/4060\/products\/56107_large-mini-prong-moisture-sensor-bbc-micro-bit_1000x_e687c03f-1e0a-4539-8336-ac190053ee5a.jpg?v=1611558912"}],"url":"https:\/\/www.etchkshop.com\/collections\/sensor\/sensors-inputs-outputs.oembed","provider":"ETC Educational Technology Connection (HK) Ltd","version":"1.0","type":"link"}