{"product_id":"20-stuks-tb371-mcu-toetsenbord-met-4-toetsen-board-compatibel-uno-mega2560-pro-mini-nano-voor-raspberry-pi-teensy-geekcreit-voor-arduino-producten-die-werken-met-officieel-voor-arduino-board-s_1661793","title":"20 Stuks MCU-toetsenbord met 4 toetsen - compatibel met Arduino en Raspberry Pi","description":"\u003cdiv\u003e\u003cspan style=\"font-size: 16px\"\u003e\u003cspan style=\"font-weight: bolder\"\u003eBeschrijving:\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e1. Gemeenschappelijke kathodetoetsmodule met 4 knoppen (indien ingedrukt, uitgang laag niveau).\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e2. Aansluitingen: GND, K1, K2, K3, K4 (4 PIN UIT 2,54 mm).\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e3. Werkspanning: DC 0-48V.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e4. Grootte: 12,7 x 33 mm.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"font-size: 14px\"\u003e5. Kan rechtstreeks worden aangesloten op Arduino Uno, Mega2560, Due, en is compatibel met Raspberry Pi, Banana Pi en andere MCU's zoals AVR, STM32, ARM, PIC, C51, NRF24LE1, CC2530, MSP430, STM8, FPGA, CPLD, enz.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px\"\u003e\u003cspan style=\"font-weight: bolder\"\u003eSchema:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 14px;line-height: inherit\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px\"\u003e\u003cspan style=\"font-weight: bolder\"\u003eArduino Uno\/Mega2560 Code\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e******************************************************\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e*\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eArduino_4key_uart\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eDeze voorbeeldcode is beschikbaar in de publieke repository.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e*\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eDefinieer de sleutelpen:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eint K1 = 13;\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eint K2 = 12;\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eint K3 = 11;\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eint K4 = 10;\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eVariabelen:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eint buttonState = 0; \/\/ variabele voor het lezen van de drukknop.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eDe setup-routine wordt eenmaal uitgevoerd bij reset:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003evoid setup() {\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003epinMode(K1, INPUT);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003epinMode(K2, INPUT);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003epinMode(K3, INPUT);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003epinMode(K4, INPUT);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edigitalWrite(K1, HIGH);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edigitalWrite(K2, HIGH);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edigitalWrite(K3, HIGH);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edigitalWrite(K4, HIGH);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eSerial.begin(9600);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e}\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eDe looproutine draait continu:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003evoid loop() {\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K1);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eif (!buttonState) Serial.print(\"k1\\n\");\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edo {\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K1);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e} while (!buttonState); \/\/ Wacht tot knop losgelaten is\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K2);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eif (!buttonState) Serial.print(\"k2\\n\");\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edo {\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K2);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e} while (!buttonState);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K3);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eif (!buttonState) Serial.print(\"k3\\n\");\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edo {\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K3);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e} while (!buttonState);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K4);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003eif (!buttonState) Serial.print(\"k4\\n\");\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edo {\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003ebuttonState = digitalRead(K4);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e} while (!buttonState);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003edelay(100);\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px\"\u003e}\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cspan style=\"font-size: 14px\"\u003e******************************************************\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px\"\u003e\u003cspan style=\"font-weight: bolder\"\u003ePakket inbegrepen:\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e20 x 4 Key MCU Keyboard Matrix Button Board\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-inline-gallery\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/8d7799a7-0eb5-45dc-8268-8446c3479cf4_15e887ae-2b4d-47e0-b2b3-2fddecead19a.jpg?v=1779923381\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/69bf26b3-3c90-47e5-b157-9d519b2b4653_e7440889-d0ea-49e1-a5da-2c99e6040a5b.jpg?v=1779923388\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/72da69e8-fcea-4beb-bfb2-4f5a66ea44f6_6a1d4641-76ad-45c0-a2e3-b003c1116187.jpg?v=1779923394\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/75caca1e-71f6-4c99-ac9e-e3ae30d2da57_8a3aa2d3-3ed5-4aa4-8a5d-b5d7ef926f4b.jpg?v=1779923400\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/b890288a-e5de-4f12-a438-d135829e6cde_058e16b5-0952-4e3d-9898-ff25956ef2ab.jpg?v=1779923409\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/HTB1CdiHGpXXXXb6aXXXq6xXFXXXG_21789af3-6bf3-42dc-8dd2-54e9208ff8eb.webp?v=1779923414\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/8d7799a7-0eb5-45dc-8268-8446c3479cf4.jpg?v=1779923429\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/69bf26b3-3c90-47e5-b157-9d519b2b4653.jpg?v=1779923437\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/72da69e8-fcea-4beb-bfb2-4f5a66ea44f6.jpg?v=1779923440\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/75caca1e-71f6-4c99-ac9e-e3ae30d2da57.jpg?v=1779923451\" alt=\"Product image\" loading=\"lazy\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/b890288a-e5de-4f12-a438-d135829e6cde.jpg?v=1779923457\" alt=\"Product image\" loading=\"lazy\"\u003e\n\u003c\/div\u003e","brand":"AllesXL","offers":[{"title":"Standaard","offer_id":53078600745296,"sku":"ALXNL7643686437031","price":47.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/2003\/8224\/files\/8d7799a7-0eb5-45dc-8268-8446c3479cf4_15e887ae-2b4d-47e0-b2b3-2fddecead19a.jpg?v=1779923381","url":"https:\/\/allesxl.com\/products\/20-stuks-tb371-mcu-toetsenbord-met-4-toetsen-board-compatibel-uno-mega2560-pro-mini-nano-voor-raspberry-pi-teensy-geekcreit-voor-arduino-producten-die-werken-met-officieel-voor-arduino-board-s_1661793","provider":"allesxl","version":"1.0","type":"link"}