{"id":7918169194733,"title":"3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","handle":"3pcs-melife-mpr121-breakout-v12-proximity-capacitive-touch-sensor-controller-keyboard-development-board-module","description":"\u003ch1\u003e3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.\u003c\/h1\u003e\n\u003cdiv style=\"max-width:512px;\"\u003e\u003c\/div\u003e\n\u003ch3\u003e\n\u003cspan class=\"glyphicon glyphicon-list-alt\"\u003e\u003c\/span\u003e Description\u003c\/h3\u003e\n\u003cp\u003eDescription: The MPR121 is a capacitive touch sensor controller driven by an\nI2C interface. The chip can control up to twelve individual electrodes, as\nwell as a simulated thirteenth electrode. The MPR121 also features eight LED\ndriving pins. When these pins are not configured as electrodes, they may be\nused to drive LEDs.There a four jumpers on the bottom of the board, all of\nwhich are set (closed) by default. An address jumper ties the ADD pin to\nground, meaning the default I2C address of the chip will be 0x5A. If you need\nto change the address of the chip (by shorting ADD to a different pin), make\nsure you open the jumper first. Jumpers also connect SDA, SCL and the\ninterrupt pin to 10k pull-up resistors. If you don't require the pull-up\nresistors you can open the jumpers by cutting the trace connecting them.There\nis no regulation on the board, so the voltage supplied should be between 2.5\nand 3.6VDC. The VREG pin is connected through a 0.1uF capacitor to ground,\nwhich means, unless you modify the board, you can't operate the MPR121 in low-\nsupply voltage mode (1.71-2.75 VDC).Features: Low power operation.1.71 V to\n3.6 V supply operation.29 μA supply current at 16 ms sampling interval\nperiod.3 μA Stop mode current.12 capacitance sensing inputs.8 inputs are\nmultifunctional for LED driver and GPIO.Complete touch detection.Auto-\nconfiguration for each sensing input.Auto-calibration for each sensing\ninput.Touch\/release threshold and debounce for touch detection.I2C\ninterface, with Interrupt output.MPR121: 3 mm x 3 mm x 0.65 mm.-40¡ãC to\n+85¡ãC operating temperature range.Package included:3 x MPR121 Proximity\nCapacitive Touch Sensor Board with Pins\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow power operation.\u003c\/li\u003e\n\u003cli\u003e1.71 V to 3.6 V supply operation.\u003c\/li\u003e\n\u003cli\u003e29A supply current at 16 ms sampling interval period.\u003c\/li\u003e\n\u003cli\u003e3A Stop mode current.\u003c\/li\u003e\n\u003cli\u003e12 capacitance sensing inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n","published_at":"2022-08-31T13:21:00+10:00","created_at":"2022-08-31T13:21:05+10:00","vendor":"MELIFE","type":"Single Board Computers","tags":["electronics"],"price":8300,"price_min":8300,"price_max":8300,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":43269106696429,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B086GFPW14","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","public_title":null,"options":["Default Title"],"price":8300,"weight":14,"compare_at_price":null,"inventory_management":null,"barcode":"M15534","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/leoforward.com\/cdn\/shop\/products\/71hK60y9bUL.jpg?v=1661916065","\/\/leoforward.com\/cdn\/shop\/products\/51SA3ogK7kL.jpg?v=1661916065","\/\/leoforward.com\/cdn\/shop\/products\/61mfCsWuTzL.jpg?v=1661916065","\/\/leoforward.com\/cdn\/shop\/products\/51_9r00tOoL.jpg?v=1661916065","\/\/leoforward.com\/cdn\/shop\/products\/61-pF01Dp1L.jpg?v=1661916065"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/products\/71hK60y9bUL.jpg?v=1661916065","options":["Title"],"media":[{"alt":" [AUSTRALIA] - 3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","id":30337310916845,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1600,"width":1600,"src":"\/\/leoforward.com\/cdn\/shop\/products\/71hK60y9bUL.jpg?v=1661916065"},"aspect_ratio":1.0,"height":1600,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/products\/71hK60y9bUL.jpg?v=1661916065","width":1600},{"alt":" [AUSTRALIA] - 3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","id":30337310949613,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1001,"width":1001,"src":"\/\/leoforward.com\/cdn\/shop\/products\/51SA3ogK7kL.jpg?v=1661916065"},"aspect_ratio":1.0,"height":1001,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/products\/51SA3ogK7kL.jpg?v=1661916065","width":1001},{"alt":" [AUSTRALIA] - 3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","id":30337310982381,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1001,"width":1001,"src":"\/\/leoforward.com\/cdn\/shop\/products\/61mfCsWuTzL.jpg?v=1661916065"},"aspect_ratio":1.0,"height":1001,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/products\/61mfCsWuTzL.jpg?v=1661916065","width":1001},{"alt":" [AUSTRALIA] - 3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","id":30337311015149,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1001,"width":1001,"src":"\/\/leoforward.com\/cdn\/shop\/products\/51_9r00tOoL.jpg?v=1661916065"},"aspect_ratio":1.0,"height":1001,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/products\/51_9r00tOoL.jpg?v=1661916065","width":1001},{"alt":" [AUSTRALIA] - 3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.","id":30337311047917,"position":5,"preview_image":{"aspect_ratio":1.0,"height":1001,"width":1001,"src":"\/\/leoforward.com\/cdn\/shop\/products\/61-pF01Dp1L.jpg?v=1661916065"},"aspect_ratio":1.0,"height":1001,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/products\/61-pF01Dp1L.jpg?v=1661916065","width":1001}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch1\u003e3Pcs MELIFE MPR121 Breakout V12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board Module.\u003c\/h1\u003e\n\u003cdiv style=\"max-width:512px;\"\u003e\u003c\/div\u003e\n\u003ch3\u003e\n\u003cspan class=\"glyphicon glyphicon-list-alt\"\u003e\u003c\/span\u003e Description\u003c\/h3\u003e\n\u003cp\u003eDescription: The MPR121 is a capacitive touch sensor controller driven by an\nI2C interface. The chip can control up to twelve individual electrodes, as\nwell as a simulated thirteenth electrode. The MPR121 also features eight LED\ndriving pins. When these pins are not configured as electrodes, they may be\nused to drive LEDs.There a four jumpers on the bottom of the board, all of\nwhich are set (closed) by default. An address jumper ties the ADD pin to\nground, meaning the default I2C address of the chip will be 0x5A. If you need\nto change the address of the chip (by shorting ADD to a different pin), make\nsure you open the jumper first. Jumpers also connect SDA, SCL and the\ninterrupt pin to 10k pull-up resistors. If you don't require the pull-up\nresistors you can open the jumpers by cutting the trace connecting them.There\nis no regulation on the board, so the voltage supplied should be between 2.5\nand 3.6VDC. The VREG pin is connected through a 0.1uF capacitor to ground,\nwhich means, unless you modify the board, you can't operate the MPR121 in low-\nsupply voltage mode (1.71-2.75 VDC).Features: Low power operation.1.71 V to\n3.6 V supply operation.29 μA supply current at 16 ms sampling interval\nperiod.3 μA Stop mode current.12 capacitance sensing inputs.8 inputs are\nmultifunctional for LED driver and GPIO.Complete touch detection.Auto-\nconfiguration for each sensing input.Auto-calibration for each sensing\ninput.Touch\/release threshold and debounce for touch detection.I2C\ninterface, with Interrupt output.MPR121: 3 mm x 3 mm x 0.65 mm.-40¡ãC to\n+85¡ãC operating temperature range.Package included:3 x MPR121 Proximity\nCapacitive Touch Sensor Board with Pins\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow power operation.\u003c\/li\u003e\n\u003cli\u003e1.71 V to 3.6 V supply operation.\u003c\/li\u003e\n\u003cli\u003e29A supply current at 16 ms sampling interval period.\u003c\/li\u003e\n\u003cli\u003e3A Stop mode current.\u003c\/li\u003e\n\u003cli\u003e12 capacitance sensing inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n"}