{"title":"Wireless","description":"\u003cp\u003eBrowse our Wireless collection. Best Price.\u003c\/p\u003e","products":[{"product_id":"24ghz-mini-flexible-wifi-antenna-with-ufl-connector-100mm","title":"2.4GHz Mini Flexible WiFi Antenna with uFL Connector (100mm)","description":"\u003cp\u003eThis 4\" \/ 100mm long \u003cstrong\u003eflexible uFL 2.4GHz antenna\u003c\/strong\u003e has approx 4DBi gain and a 50Ω impedance so it will work fantastically with just about any 2.4-2.5GHz wireless receiver\/transmitter such as the Adafruit CC3000s!\u003c\/p\u003e\u003cp\u003eAntenna comes with a uFL (a.k.a u.FL \/ IPX \/ IPEX) connector, so no more need for additional adapters to get your IoT cloud flying high!\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\u003cul\u003e\n\u003cli\u003eOperating Range: 2400~2500MHz \/ 4900~5900MHz\u003c\/li\u003e\n\u003cli\u003eEfficiency: 90%\u003c\/li\u003e\n\u003cli\u003eBandwidth (VSWR: 2.0 max.) 140 MHz \/ SWR \u0026lt; 2.0\u003c\/li\u003e\n\u003cli\u003ePolarization: Linear\u003c\/li\u003e\n\u003cli\u003eRadiation: Omni directional\u003c\/li\u003e\n\u003cli\u003eAntenna Gain: 4DBi\u003c\/li\u003e\n\u003cli\u003eImpedance: 50 ohm\u003c\/li\u003e\n\u003cli\u003eCable: 100mm \/ 4\" long\u003c\/li\u003e\n\u003cli\u003eAntenna: 40mm x 8mm \/ 1.6\" x 0.3\"\u003c\/li\u003e\n\u003cli\u003eWeight: 0.7g\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e \u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003cdiv class=\"row\"\u003e\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e","brand":"The Pi Hut","offers":[{"title":"Default Title","offer_id":51290322075684,"sku":"iab1787257352830","price":1.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/24ghz-mini-flexible-wifi-antenna-with-ufl-connector-100mm_1.jpg?v=1787257357"},{"product_id":"adafruit-fona-3g-cellular-breakout-european-version-discontinued","title":"Adafruit FONA 3G Cellular Breakout - European version [Discontinued]","description":"\u003cp\u003eFor those who want to take it to the next level we now have a 3G Cellular Modem breakout! The FONA 3G has better coverage, GSM backwards-compatibility and even sports a built-in GPS module for geolocation \u0026amp; asset tracking. This all-in-one cellular phone module with that lets you add location-tracking, voice, text, SMS and data to your project in a single breakout.\u003c\/p\u003e\u003cp\u003eThis module measure only 1.75\"x1.6\" but packs a surprising amount of technology into it's little frame. At the heart is a powerful GSM cellular module (we use the latest SIM5320E) with integrated GPS. This module can do just about everything\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eQuad-band 850MHz GSM, 900MHz EGSM, 1800MHz DCS, 1900MHz PCs - connect onto any global GSM network with any 2G SIM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the European Version\u003c\/strong\u003e - with dual-band UMTS\/HSDPA 900\/2100MHz WCDMA + HSDPA (Click here for the American frequency band version)\u003c\/li\u003e\n\u003cli\u003eFully-integrated GPS (Qualcomm PM8015 GPS) that can be controlled and query over the same serial port\u003c\/li\u003e\n\u003cli\u003eMake and receive voice calls using a headset or an external 8Ω speaker + electret microphone\u003c\/li\u003e\n\u003cli\u003eSend and receive SMS messages\u003c\/li\u003e\n\u003cli\u003eSend and receive GPRS data (TCP\/IP, HTTP, etc.)\u003c\/li\u003e\n\u003cli\u003eAT command interface can be used with 300, 600, 1200, 4800, 9600, 19200, 38400, 57600, 115200, 230K, 461K, 961K, 3.2M, 3.7M and 4.0Mbps\u003c\/li\u003e\n\u003cli\u003eNative USB support - plug it into a computer and you'll get serial ports for AT commands, GPS NMEA as well as a modem (note we've only tried out the AT\u0026amp;NMEA ports on Windows)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHere's the GPS specifications:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e16 acquisition channels\u003c\/li\u003e\n\u003cli\u003eGPS L1 C\/A code\u003c\/li\u003e\n\u003cli\u003eSensitivity\u003cbr\u003eTracking: -157 dBm\u003cbr\u003eCold starts : -144 dBm\u003c\/li\u003e\n\u003cli\u003eTime-To-First-Fix\u003cbr\u003eCold starts: 100s (typ.)\u003cbr\u003eHot starts: 1s (typ.)\u003c\/li\u003e\n\u003cli\u003eAccuracy: approx 2.5 meters\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe strongly recommend using an active antenna with the GPS, while we could get a fix with a passive antenna it took a long time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlease note! \u003c\/strong\u003eWe've had a lot of requests for a 3G cell module and we're happy to oblige but this module has many small differences between it and the FONA 800 and 808, so it is not a drop-in replacement! In particular the data functionality is not as easy to use. We are adapting our FONA library to support the 3G chipset and right now we have SMS, calling, and basic functionality working but it will be a while until we get full GPRS TCP\/IP and HTTP support. Also, the GPS is not as fast and low-power as the one on the FONA 808. \u003cstrong\u003eWe recommend this module for people who are able to handle a more advanced experience.\u003c\/strong\u003e Beginners will like our FONA 80x series more.\u003c\/p\u003e\u003cp\u003eSounds great, right? So we kitted out this fine module onto a little breakout with all the extras you need to make your next project shine\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOnboard LiPoly battery charging circuitry so you can take your project on the go. Use any 500mAh+ LiPoly or LiIon battery and recharge over the MicroUSB when necessary. Two LEDs let you know when its charging and done\u003c\/li\u003e\n\u003cli\u003eStandard 4-pole TRRS headphone jack. Use any 'Android' or 'iPhone'-compatible headset with mic\u003c\/li\u003e\n\u003cli\u003eBreakouts for external 8Ω speaker and electret mic if you don't want to use a headphone\u003c\/li\u003e\n\u003cli\u003eLevel shifting circuitry so you can run it with 2.8V to 5V logic.\u003c\/li\u003e\n\u003cli\u003euFL connections for external antennas\u003c\/li\u003e\n\u003cli\u003eIndicator LEDs for power and network connectivity\u003c\/li\u003e\n\u003cli\u003eStandard SIM slides into the back\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOn its own, this module can't do anything. It requires a microcontroller to drive it! We suggest and use an Arduino but any 3-5V microcontroller with a UART can send and receive commands over the RX\/TX pins.\u003c\/p\u003e\u003cp\u003eYou will also need some required \u0026amp; recommended accessories to make FONA 3G work. \u003cstrong\u003eThese are not included!\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired SIM Card! \u003c\/strong\u003eA 2G or 3G Mini SIM card is required to do anything on the cellular network.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired Lipoly Battery - 500mAh or larger!\u003c\/strong\u003e This 1200mAh will work great.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroUSB cable\u003c\/strong\u003e for charging the battery and communicating with the module over USB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal uFL GSM Antenna\u003c\/strong\u003e - this slim one works great (or, if you want to us an SMA antenna - a uFL to SMA adapter cable.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Active GPS Antenna\u003c\/strong\u003e (needs a uFL to SMA adapter too) - like this one!\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTRRS 4-Pole Headset\u003c\/strong\u003e - Not required but it'll be tough to make a phone call without it. Any 'iPhone' or 'Android' compatible (but not iPhone original) should work. We tried about 10 different ones, and basically the more expensive once are more comfortable and louder but our official iPhone headset mic did not work.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCheck out our tutorial with schematics, wiring diagrams, datasheets and more here!\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\u003cli\u003eDatasheets, schematic, EagleCAD PCB files, and Fritzing available in the product tutorial\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003eProduct Dimensions: 50.0mm x 46.0mm x 7.0mm \/ 2.0\" x 1.8\" x 0.3\" \u003c\/p\u003e\n\u003cp\u003eProduct Weight: 50.0g \/ 1.8oz \u003c\/p\u003e\n\u003c\/div\u003e \u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290322108452,"sku":"hrp1787257354322","price":48.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/adafruit-fona-3g-cellular-breakout---european-version-discontinued_1.jpg?v=1787257359"},{"product_id":"adafruit-fona-3g-cellular-breakout-american-version-discontinued","title":"Adafruit FONA 3G Cellular Breakout - American version [Discontinued]","description":"\u003cp\u003eFor those who want to take it to the next level we now have a 3G Cellular Modem breakout! The FONA 3G has better coverage, GSM backwards-compatibility and even sports a built-in GPS module for geolocation \u0026amp; asset tracking. This all-in-one cellular phone module with that lets you add location-tracking, voice, text, SMS and data to your project in a single breakout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIf you want the version that comes with a free Ting 2G SIM Card, click here! \u003c\/strong\u003eThis version is for resellers and people who do not need a free SIM card. For 3G use in the USA, please use AT\u0026amp;T network as the Ting network is 2G only on this module.\u003c\/p\u003e\u003cp\u003eThis module measure only 1.75\"x1.6\" but packs a surprising amount of technology into it's little frame. At the heart is a powerfull GSM cellular module (we use the latest SIM5320) with integrated GPS. This module can do just about everything\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eQuad-band 850MHz GSM, 900MHz EGSM, 1800MHz DCS, 1900MHz PCs - connect onto any global GSM network with any 2G SIM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the American Version dual-band UMTS\/HSDPA 850\/1900MHz WCDMA + HSDPA \u003c\/strong\u003e (Click here for the European frequency band version)\u003c\/li\u003e\n\u003cli\u003eFully-integrated GPS (Qualcomm PM8015 GPS) that can be controlled and query over the same serial port\u003c\/li\u003e\n\u003cli\u003eMake and receive voice calls using a headset or an external 8Ω speaker + electret microphone\u003c\/li\u003e\n\u003cli\u003eSend and receive SMS messages\u003c\/li\u003e\n\u003cli\u003eSend and receive GPRS data (TCP\/IP, HTTP, etc.)\u003c\/li\u003e\n\u003cli\u003eAT command interface can be used with 300, 600, 1200, 4800, 9600, 19200, 38400, 57600, 115200, 230K, 461K, 961K, 3.2M, 3.7M and 4.0Mbps\u003c\/li\u003e\n\u003cli\u003eNative USB support - plug it into a computer and you'll get serial ports for GPS and\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHere's the GPS specifications:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e16 acquisition channels\u003c\/li\u003e\n\u003cli\u003eGPS L1 C\/A code\u003c\/li\u003e\n\u003cli\u003eSensitivity\u003cbr\u003eTracking: -157 dBm\u003cbr\u003eCold starts : -144 dBm\u003c\/li\u003e\n\u003cli\u003eTime-To-First-Fix\u003cbr\u003eCold starts: 100s (typ.)\u003cbr\u003eHot starts: 1s (typ.)\u003c\/li\u003e\n\u003cli\u003eAccuracy: approx 2.5 meters\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe strongly recommend using an active antenna with the GPS, while we could get a fix with a passive antenna it took a long time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlease note! \u003c\/strong\u003eWe've had a lot of requests for a 3G cell module and we're happy to oblige but this module has many small differences between it and the FONA 800 and 808, so it is not a drop-in replacement! In particular the data functionality is not as easy to use. We are adapting our FONA library to support the 3G chipset and right now we have SMS, calling, and basic functionality working but it will be a while until we get full GPRS TCP\/IP and HTTP support. Also, the GPS is not as fast and low-power as the one on the FONA 808. \u003cstrong\u003eWe recommend this module for people who are able to handle a more advanced experience.\u003c\/strong\u003e Beginners will like our FONA 80x series more.\u003c\/p\u003e\u003cp\u003eSounds great, right? So we kitted out this fine module onto a little breakout with all the extras you need to make your next project shine\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOnboard LiPoly battery charging circuitry so you can take your project on the go. Use any 500mAh+ LiPoly or LiIon battery and recharge over the MicroUSB when necessary. Two LEDs let you know when its charging and done\u003c\/li\u003e\n\u003cli\u003eStandard 4-pole TRRS headphone jack. Use any 'Android' or 'iPhone'-compatible headset with mic\u003c\/li\u003e\n\u003cli\u003eBreakouts for external 8Ω speaker and electret mic if you don't want to use a headphone\u003c\/li\u003e\n\u003cli\u003eLevel shifting circuitry so you can run it with 2.8V to 5V logic.\u003c\/li\u003e\n\u003cli\u003euFL connections for external antennas\u003c\/li\u003e\n\u003cli\u003eIndicator LEDs for power and network connectivity\u003c\/li\u003e\n\u003cli\u003eStandard SIM slides into the back\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOn its own, this module can't do anything. It requires a microcontroller to drive it! We suggest and use an Arduino but any 3-5V microcontroller with a UART can send and receive commands over the RX\/TX pins.\u003c\/p\u003e\u003cp\u003eYou will also need some required \u0026amp; recommended accessories to make FONA 3G work. \u003cstrong\u003eThese are not included!\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired SIM Card! \u003c\/strong\u003eA 2G or 3G Mini SIM card is required to do anything on the cellular network.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired Lipoly Battery - 500mAh or larger!\u003c\/strong\u003e This 1200mAh will work great.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroUSB cable\u003c\/strong\u003e for charging the battery and communicating with the module over USB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal uFL GSM Antenna\u003c\/strong\u003e - this slim one works great (or, if you want to us an SMA antenna - a uFL to SMA adapter cable.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Active GPS Antenna\u003c\/strong\u003e (needs a uFL to SMA adapter too) - like this one!\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTRRS 4-Pole Headset\u003c\/strong\u003e - Not required but it'll be tough to make a phone call without it. Any 'iPhone' or 'Android' compatible (but not iPhone original) should work. We tried about 10 different ones, and basically the more expensive once are more comfortable and louder but our official iPhone headset mic did not work.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCheck out our tutorial with schematics, wiring diagrams, datasheets and more here!\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\u003cli\u003eDatasheets, schematic, EagleCAD PCB files, and Fritzing available in the product tutorial\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003eProduct Dimensions: 50.0mm x 46.0mm x 7.0mm \/ 2.0\" x 1.8\" x 0.3\" \u003c\/p\u003e\n\u003cp\u003eProduct Weight: 16.0g \/ 0.6oz \u003c\/p\u003e\n\u003c\/div\u003e \u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290322239524,"sku":"chg1787257356683","price":55.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/adafruit-fona-3g-cellular-breakout---american-version-discontinued_1.jpg?v=1787257361"},{"product_id":"rfid-nfc-smart-ring-size-12-ntag213-discontinued","title":"RFID \/ NFC Smart Ring - Size 12 - NTAG213 [Discontinued]","description":"\u003cp\u003eWhat did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID\/NFC transponder!\u003c\/p\u003e\u003cp\u003eNFC (near field communication) technology is a great way to interact wirelessly with projects. With the \u003cstrong\u003eRFID\/NFC Smart Ring\u003c\/strong\u003e your ring can communicate with your smart phone\/tablet, computer, or much more! \u003cstrong\u003eContains two MiFare Ultralight C - NTAG 213's \u003c\/strong\u003ewith 144 bytes of read\/write memory. One is on the 'inside' of the ring towards the palm, the other is underneath the jewel. 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What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID\/NFC transponder!\u003c\/p\u003e\u003cp\u003eNFC (near field communication) technology is a great way to interact wirelessly with projects. With the \u003cstrong\u003eRFID\/NFC Smart Ring\u003c\/strong\u003e your ring can communicate with your smart phone\/tablet, computer, or much more! \u003cstrong\u003eContains two MiFare Ultralight C - NTAG 213's \u003c\/strong\u003ewith 144 bytes of read\/write memory. One is on the 'inside' of the ring towards the palm, the other is underneath the jewel. You can use tags to launch apps, unlock your phone, transmit a URL, control an Arduino, etc.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis is RFID\/RFID Smart Ring with a 19mm Inner Diameter.\u003c\/strong\u003e We have a bunch of sizes in the store!\u003c\/p\u003e\u003cp\u003eNFC is a way for two devices very close to each other to communicate. Sort of like a very short range bluetooth that doesn't require authentication. It is an extension of RFID, so anything you can do with RFID you can do with NFC. Because it can read and write tags, you can always just use this for RFID-tag projects. This ring can be read by any NFC\/RFID reader with ISO 14443-3A MiFare Ultralight\/NTAG support (which is pretty much all of them), including our PN532 readers and various tablets and phones.\u003c\/p\u003e\u003cp\u003eLearn more about RFID \/ NFC products and projects on the Adafruit Learning System.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cul\u003e\n\u003cli\u003eInner Diameter: 19mm \/ 0.75\"\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 23.4mm \/ 0.92\"\u003c\/li\u003e\n\u003cli\u003eThickness: 2.5mm \/ 0.1\"\u003c\/li\u003e\n\u003cli\u003eWeight: 4.4g\u003c\/li\u003e\n\u003cli\u003eRing Size Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290322370596,"sku":"urt1787257358559","price":34.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/rfid-nfc-smart-ring---size-9---ntag213-discontinued_1.jpg?v=1787257363"},{"product_id":"rfid-nfc-smart-ring-size-10-ntag213-discontinued","title":"RFID \/ NFC Smart Ring - Size 10 - NTAG213 [Discontinued]","description":"\u003cp\u003eWhat did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID\/NFC transponder!\u003c\/p\u003e\u003cp\u003eNFC (near field communication) technology is a great way to interact wirelessly with projects. With the \u003cstrong\u003eRFID\/NFC Smart Ring\u003c\/strong\u003e your ring can communicate with your smart phone\/tablet, computer, or much more! \u003cstrong\u003eContains two MiFare Ultralight C - NTAG 213's \u003c\/strong\u003ewith 144 bytes of read\/write memory. One is on the 'inside' of the ring towards the palm, the other is underneath the jewel. You can use tags to launch apps, unlock your phone, transmit a URL, control an Arduino, etc.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis is RFID\/RFID Smart Ring with a 20mm Inner Diameter.\u003c\/strong\u003e We have a bunch of sizes in the store!\u003c\/p\u003e\u003cp\u003eNFC is a way for two devices very close to each other to communicate. Sort of like a very short range bluetooth that doesn't require authentication. It is an extension of RFID, so anything you can do with RFID you can do with NFC. Because it can read and write tags, you can always just use this for RFID-tag projects. This ring can be read by any NFC\/RFID reader with ISO 14443-3A MiFare Ultralight\/NTAG support (which is pretty much all of them), including our PN532 readers and various tablets and phones.\u003c\/p\u003e\u003cp\u003eLearn more about RFID \/ NFC products and projects on the Adafruit Learning System.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cul\u003e\n\u003cli\u003eInner Diameter: 19.8mm \/ 0.79\"\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 24.4mm \/ 0.96\"\u003c\/li\u003e\n\u003cli\u003eThickness: 2.5mm \/ 0.1\"\u003c\/li\u003e\n\u003cli\u003eWeight: 4.6g\u003c\/li\u003e\n\u003cli\u003eRing Size Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290322436132,"sku":"dcj1787257359563","price":28.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/rfid-nfc-smart-ring---size-10---ntag213-discontinued_1.jpg?v=1787257364"},{"product_id":"rfid-nfc-smart-ring-size-11-ntag213-discontinued","title":"RFID \/ NFC Smart Ring - Size 11 - NTAG213 [Discontinued]","description":"\u003cp\u003eWhat did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID\/NFC transponder!\u003c\/p\u003e\u003cp\u003eNFC (near field communication) technology is a great way to interact wirelessly with projects. With the \u003cstrong\u003eRFID\/NFC Smart Ring\u003c\/strong\u003e your ring can communicate with your smart phone\/tablet, computer, or much more! \u003cstrong\u003eContains two MiFare Ultralight C - NTAG 213's \u003c\/strong\u003ewith 144 bytes of read\/write memory. One is on the 'inside' of the ring towards the palm, the other is underneath the jewel. You can use tags to launch apps, unlock your phone, transmit a URL, control an Arduino, etc.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis is RFID\/RFID Smart Ring with an 21mm Inner Diameter.\u003c\/strong\u003e We have a bunch of sizes in the store!\u003c\/p\u003e\u003cp\u003eNFC is a way for two devices very close to each other to communicate. Sort of like a very short range bluetooth that doesn't require authentication. It is an extension of RFID, so anything you can do with RFID you can do with NFC. Because it can read and write tags, you can always just use this for RFID-tag projects. This ring can be read by any NFC\/RFID reader with ISO 14443-3A MiFare Ultralight\/NTAG support (which is pretty much all of them), including our PN532 readers and various tablets and phones.\u003c\/p\u003e\u003cp\u003eLearn more about RFID \/ NFC products and projects on the Adafruit Learning System.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cul\u003e\n\u003cli\u003eInner Diameter: 20.6mm \/ 0.83\"\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 25.4mm \/ 1\"\u003c\/li\u003e\n\u003cli\u003eThickness: 2.5mm \/ 0.1\"\u003c\/li\u003e\n\u003cli\u003eWeight: 4.7g\u003c\/li\u003e\n\u003cli\u003eRing Size Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290322501668,"sku":"ybc1787257360351","price":28.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/rfid-nfc-smart-ring---size-11---ntag213-discontinued_1.jpg?v=1787257365"},{"product_id":"micro-nfcrfid-transponder-ntag203-1356mhz","title":"Micro NFC\/RFID Transponder - NTAG203 13.56MHz","description":"\u003cp\u003eThis tiny micro NFC\/RFID tag is super small, and contains an NTAG203 chip plus antenna. It's super tiny, flexible and a great way to DIY an RFID or NFC device if you're interested in designing your own ring, wearable or whatever other tiny device with near field communication incorporated. Contains 144 bytes of read-write accessible memory.\u003c\/p\u003e\n\u003cp\u003eYou can use this with our PN532-based RFID reader breakouts \u0026amp; shields, and will work with all the latest cellphones or tablets that have NFC built in. Note that since the antenna is so small you'll need to put the tag right up against the device that's reading it. Can be used to control a cellphone with commands, URLs, unlocking, etc.\u003c\/p\u003e\n\u003cp\u003eLearn more about RFID \/ NFC products and projects on the Adafruit Learning System.\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 15.6mm x 6mm\u003c\/li\u003e\n\u003cli\u003eAndroid NFC developer info\u003c\/li\u003e\n\u003cli\u003eSome handy Android NFC Apps that you can use\u003c\/li\u003e\n\u003cli\u003eNTAG203 Datasheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul id=\"product-files\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290324402212,"sku":"ekr1787257362101","price":2.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/micro-nfcrfid-transponder---ntag203-1356mhz_1.jpg?v=1787257367"},{"product_id":"rfid-nfc-smart-ring-size-8-ntag213-discontinued","title":"RFID \/ NFC Smart Ring - Size 8 - NTAG213 [Discontinued]","description":"\u003cp\u003eWhat did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID\/NFC transponder!\u003c\/p\u003e\u003cp\u003eNFC (near field communication) technology is a great way to interact wirelessly with projects. With the \u003cstrong\u003eRFID\/NFC Smart Ring\u003c\/strong\u003e your ring can communicate with your smart phone\/tablet, computer, or much more! \u003cstrong\u003eContains two MiFare Ultralight C - NTAG 213's \u003c\/strong\u003ewith 144 bytes of read\/write memory. One is on the 'inside' of the ring towards the palm, the other is underneath the jewel. 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This ring can be read by any NFC\/RFID reader with ISO 14443-3A MiFare Ultralight\/NTAG support (which is pretty much all of them), including our PN532 readers and various tablets and phones.\u003c\/p\u003e\u003cp\u003eLearn more about RFID \/ NFC products and projects on the Adafruit Learning System.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cul\u003e\n\u003cli\u003eInner Diameter: 18.1mm \/ 0.7\"\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 23mm \/ 0.9\"\u003c\/li\u003e\n\u003cli\u003eThickness: 2.5mm \/ 0.1\"\u003c\/li\u003e\n\u003cli\u003eWeight: 4.5g\u003c\/li\u003e\n\u003cli\u003eRing Size Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51290324467748,"sku":"gkr1787257364226","price":32.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0729\/3732\/files\/rfid-nfc-smart-ring---size-8---ntag213-discontinued_1.jpg?v=1787257368"},{"product_id":"rfid-nfc-smart-ring-size-7-ntag213-discontinued","title":"RFID \/ NFC Smart Ring - Size 7 - NTAG213 [Discontinued]","description":"\u003cp\u003eWhat did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID\/NFC transponder!\u003c\/p\u003e\u003cp\u003eNFC (near field communication) technology is a great way to interact wirelessly with projects. With the \u003cstrong\u003eRFID\/NFC Smart Ring\u003c\/strong\u003e your ring can communicate with your smart phone\/tablet, computer, or much more! \u003cstrong\u003eContains two MiFare Ultralight C - NTAG 213's \u003c\/strong\u003ewith 144 bytes of read\/write memory. One is on the 'inside' of the ring towards the palm, the other is underneath the jewel. 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