「cob chip」の検索結果

防雨形で、ケースは機械的強度・電気的特性に優れるABS樹脂を使用しているため、軽く、感電の危険がなく、屋外でも安心してご使用いただけます。 電磁開閉器を介して操作するタイプで、小型、軽量、経済的です。 機械的インターロック付きですから、上・下、東・西など同時に投入できず、安全です。

ボタンパッキンがケース外に装着されたボタンパッキン露出型で低容量専用の小型、経済品のホイスト、クレーン操作用押ボタン式開閉器です。 ケーブル保護部(ケーブルブッシング)と防水部(ケーブルパッキン)が分割されていますので、ケーブルの挿入が容易で、耐水性能がより発揮できます。 ケースは高衝撃性ABSですので、軽く、感電の危険がなく安全にご使用いただけます。 機械的インターロック付です。上/下、東/西など同時に投入ができませんので、安全にご使用いただけます。

電磁開閉器を介して操作する間接操作用の押ボタン開閉器です。 組立完成品のため、製作仕様書が不要です。 防雨形 内部配線済み。スイッチ間やスイッチ内のコモン配線済みの状態で出荷いたします。 透明チップ組付工具付属。誰でも簡単に文字板が貼られた透明チップを組付け・交換することができます。

機械的インターロック付 上/下、東/西など同時投入ができませんので安全にご使用いただけます。

COBシリーズ保守用部品アクセサリー

ボタンパッキンがケース外に装着されたボタンパッキン露出構造のホイスト、クレーン操作用押ボタン開閉器です。 ケーブル保護部(ケーブルブッシング)と防水部(ケーブルパッキン)が分割されていますので、ケーブルの挿入が容易で、耐水性能がより発揮できます。 ケースは高衝撃性ABSですので、軽く、感電の危険がなく安全にご使用いただけます。 機械的インターロック付です。上/下、東/西など同時に投入ができませんので、安全にご使用いただけます。

約25mm間隔でカットが可能なテープライトです。発光色は暖かみのある電球色(3000K)となります。Chip On Board(チップオンボード)。基板上に多数のLEDチップを密集させてることにより、従来のLEDに比べてより広い範囲を明るく照らすことができ、高輝度で均一な光を照射できるのが特徴です。本製品には防水機能がありません。(カバー無しとなります。)

小さいけどとってもパワフル発光。手のひらサイズでいつでもどこでも持ち運び楽々!。ボタン一つで4つの発光切り替え!。COB面光源技術を採用し、発光面が均一で光のばらつきを抑えます。スタンド&マグネット付きで使用する場所によって簡単設置!。夜間作業や、防犯・防災にオススメ!

小さいけどとってもパワフル発光。手のひらサイズでいつでもどこでも持ち運び楽々!。ボタン一つで3つの発光切り替え!。COB面光源技術を採用し、発光面が均一で光のばらつきを抑えます。スタンド&マグネット付きで使用する場所によって簡単設置!。夜間作業や、防犯・防災にオススメ!

水に強く、ノンアレルギーで伸縮性のあるシリコン素材のカラフルなメガネチェーンです。

機械的インターロック付 上/下、東/西など同時投入ができませんので安全にご使用いただけます。

さまざまな用途に利用できるフレキシブルなスイッチです。トラックのパワーリフト・電動リフト・介護用リフト・扉の開閉など最適な小型ペンダントスイッチです。コンパクトで片手でも握りやすい大きさです。 スイッチには信頼性の高いツイン接点を採用しています。DC24Vでも確実な操作が行えます。

Description。The XBee3 Thing Plus is an ultra-capable and easy way for getting into wireless device development. The combination of XBee and Qwiic in a space-conscious design represents a much-needed update to our XBee offering. With 20 I/O pins and Lithium-Polymer Ion battery management， the XBee3 Thing Plus has all the basics for quickly prototyping or developing a connected device such as a remote sensor. The Qwiic connector and JST connector for the battery make for a solder-less option when working with the board which shortens setup time.。The new XBee3 Micro Module provides the classic， near plug and play 802.15.4 2.4GHz wireless connection(Zigbee 3.0 Protocol)that makes it so desirable， but with a new addition of being programmable with MicroPython(32KB of memory available for it). RF data rates up to 250Kbps and 200 ft indoor ranges and up to 4000 ft line-of-sight outdoor range. Communicating with/Configuring the module happens via an AT Command set or the Digi API， X-CTU， both locally or over-the-air. There's even a mobile version of X-CTU now； Digi XBee(R)Mobile.。Note：This variation uses a chip antenna and is not compatible with external antennas.。Get Started With the SparkFun XBee3 Thing Plus Guide。Features。XBee3 Micro Module。Silicon Labs EFR32MG SoC。250Kbps RF， 1Mbps Serial data rates。Indoor/Urban range up to 200 ft(60 m)。Outdoor/RF Line of Sight range up to 4000 ft(1200 m)。+8 dBm transmit power。-103 dBm receiver sensitivity。UART， I2C， SPI Interfaces(SPI currently not available at this time， but broken out on the board)。ISM 2.4GHz Frequency Band(802.15.4)。1MB of memory， 128KB RAM(32KB available for MicroPython)。20 GPIO Pins。Configurable via X-CTU or AT Command set via both USB and Wirelessly(second XBee 3 device required for wireless configuration unless you're using the mobile app)。Qwiic Compatible。On-board charging circuit and connector for 3.3v Lithium Polymer Ion Batteries(see related products for compatible batteries)。2.6VDC - 3.6VDC supply voltage。On-board Chip Antenna

メガネの置き忘れや、作業中の落下防止に最適です。メタル、プラ枠兼用です。ストラップの中間で脱着可能です。

キャンプに 夜間作業に

保護メガネの落下を防止し、動きの激しい作業の際にしっかりとメガネを安定させ、ズレを防止します。

機械などにトラップスが巻き込まれても安全に分離します。

明るくワイドに照らすチップオンボード(Chip On Board) LED採用です。複数のLEDライトをつなげて面として発光するようにした照明器具で、広い面が発光するため、反射板で反射させているタイプよりも明るくワイドな面を照らせるのが特徴です。ハイキング、犬の散歩、キャンプ、災害時など様々なシーンを明るくサポートします。簡単に切替可能な3つの発光モードと9段階の角度調整機能付きです。

Description。The Cmod， or Carrier Module， family of products is designed to offer quick， simple， and flexible integration of an FPGA into circuit design， prototyping， and learning/hobby projects.The Digilent Cmod S7 is a small， 48-pin DIP form factor board， populated with 36 pins， built around a Xilinx Spartan-7 FPGA that brings FPGA power and prototyping to a solderless breadboard.The board includes a Quad-SPI flash for programming， as well as a USB-JTAG programming circuit and USB-UART bridge. The Cmod S7 also features a clock source， Pmod port， and onboard I/O with LEDs and pushbuttons. There are 32 FPGA I/O signals， 2 FPGA analog input signals， an external power input rail， and ground that are routed to 100-mil-spaced through-hole pins， making the Cmod S7 compatible with solderless breadboards. This form factor makes the Cmod S7 a great option for flexible and affordable prototyping， or learning FPGA and digital logic circuits. At just .7 by 3.05， it can also be loaded in a standard socket and used in embedded systems.The Spartan-7 FPGA on the Cmod S7 fits performance into a small form-factor packaging. With the MicroBlaze Soft Processor Core from Xilinx， you can create embedded applications with a variety of peripherals， memory， and interfaces.If your design requires transceiver lines or more FPGA resources， we recommend the higher-performance Cmod A7， featuring an Artix-7 FPGA.Guides and demos are available to help users get started quickly with the Cmod S7. These can be found through the Support Materials tab.。Features。Xilinx Spartan-7 FPGA(XC7S25-1CSGA225C)。〇3，650 slices containing four 6-input LUTs and 8 flip-flops。〇1，620 Kbits of fast block RAM。〇Three clock management tile， each with a phase-locked loop and mixed-mode clock manager。〇80 DSP slices。〇Internal clock speeds exceeding 450 MHz。〇On-chip analog-to-digital converter(XADC)。〇Programmable over JTAG and Quad-SPI Flash。Memory。〇4 MBQuad-SPI Flash。Power。〇Powered from USB or 5V external supply connected to DIP pin 24(micro USB cable NOT included)。USB。〇USB-JTAG programming circuitry。〇USB-UART bridge。Push-buttons and LEDs。〇2 Buttons。〇4 LEDs。〇1 RGB LED。Expansion Connectors。〇1 Pmod connector。8 total FPGA I/O。〇48-pin DIP form-factor headers。36 populated pins。■32 total FPGA I/O。■2 Single-ended 0-3.3V analog inputs to XADC。Product Compliance：。〇HTC：8473301180。〇ECCN：EAR99。What's Included。Cmod S7 Module。Custom Digilent cardboard box with protective foam

OverviewThe W12L-2 series with laser technology is the perfect solution， suitable for the individual application case。The complete line of sensors in a rugged metal housing always delivers the performance you demand in object detection， reaction speed， industrial availability and laser protection.At a glanceBest in Class laser performance in a metal housing Optional Teflon coating available Precise self-adhesive optics Adjustable focus for reflex barriers High switching frequency of 2.5 kHz Connection by cable or swivel connector Can be mounted using pass-through holes， oblong holes and dovetail Laser protection class 1 or 2Your BenefitReliable detection thanks to advanced chip technology combined with innovative laser technology Small， clear and precise light spots thanks to laser technology allow easy and fast sensor alignment Universal application possibilities thanks to a wide variety of products in a robust metal housing， with optional Teflon coating Safe use of the device thanks to laser protection class 1 or 2 Insensitive to optical disturbances from the industrial environment Easy installation with SICK accessoriesApplicationsComponent identification for transverse axis robots Component identification for transverse axis robots Positioning of the sheet pallet Automated parts feed and discharge Precision positioning of the x and y axes on the stacker crane lifting and moving unit.Note

デザインが特徴的なメタリックデザイン 人間工学に基づいたリングデザイン サンドブラスト技術により、傷や指紋が付きにくい 防水・防塵・耐振動水や埃、振動に強いCOB(ChiponBoard)技術を採用 キャップレスデザインでキャップ紛失の心配もありません 便利なソフトウェア(HPよりダウンロード可能)「SPWidget」・・・バックアップ機能やファイルの暗号化など便利なデータマネジメントツール「Recuva」・・・データを間違って消去してしまった時のための復旧ソフト

Arty A7-100Tを搭載した汎用FPGA開発ボード XilinxのArtix-7 FPGAを搭載したすぐに使える開発プラットフォームです。MicroBlazeソフトウェアプロセッサコアを使用するために特別に設計されています。MicroBlazeを使用すると、さまざまな周辺機器、メモリ、インターフェースを備えた組み込みアプリケーションを作成できます。なお、WebPACKバージョンを含む開発ツールVivado Design Suite Editionを無料でダウンロードできます。また、Vitis Core開発キットやザイリンクスソフトウェア開発キットを活用して、FPGAの経験がなくてもMicroBlazeプロセッサの開発を始めることができます。Arduinoヘッダーと複数のPmodポートを備えています。 【搭載FPGA】Arty A7-100T(XC7A100TCSG324-1) 1Msps A/Dコンバータを内蔵 内部クロック速度：450MHz JTAGおよびQuad-SPIフラッシュでプログラム可能 ロジックセル：101440、ロジックスライス：15850、ビーチサンダル：126800、ブロックRAM：4860Kビット、クロック管理タイル：6、DSPスライス：240 【ボード仕様】 667MHz @ 16ビットバス付き256MB DDR3L 16MBクワッドSPIフラッシュ USB-JTAGプログラミング回路(microUSBケーブルは含まれていません) USBまたは7V～15Vの電源から給電 インターフェース：10/100Mbpsイーサネット、USB-UARTブリッジ ユーザーインターフェース：スイッチ×4、ボタン×4、リセットボタン、LED×4、RGB LED×4 拡張コネクタ：Pmodコネクタ×4、Arduino/chipKITシールドコネクタ

Extended temperature range -40℃ to +85℃ PoE+ support according to 802.3at Plating thickness 0.76μm [30μ inch] Gold over 1.27μm [50μ inch] Nickel Supporting 260℃ reflow solder processes to simplify manufacturing without extra process step Reduction of electrical problems and corrosion via thicker plating Fits Industrial applications: -40℃ to +85℃ temp range Compact design on PCB using integrated magnetics Remote powering supported by 802.3at PoE Enhanced EMI with 3 wire choke Applications Industrial Communications & Ethernet Industrial Machinery Industrial Production Equipment Automated Test Equipment

Extended temperature range -40℃ to +85℃ PoE+ support according to 802.3at Plating thickness 0.76μm [30μ inch] Gold over 1.27μm [50μ inch] Nickel Supporting 260℃ reflow solder processes to simplify manufacturing without extra process step Reduction of electrical problems and corrosion via thicker plating Fits Industrial applications: -40℃ to +85℃ temp range Compact design on PCB using integrated magnetics Remote powering supported by 802.3at PoE Enhanced EMI with 3 wire choke Applications Industrial Communications & Ethernet Industrial Machinery Industrial Production Equipment Automated Test Equipment

Extended temperature range -40℃ to +85℃ PoE+ support according to 802.3at Plating thickness 0.76μm [30μ inch] Gold over 1.27μm [50μ inch] Nickel Supporting 260℃ reflow solder processes to simplify manufacturing without extra process step Reduction of electrical problems and corrosion via thicker plating Fits Industrial applications: -40℃ to +85℃ temp range Compact design on PCB using integrated magnetics Remote powering supported by 802.3at PoE Enhanced EMI with 3 wire choke Applications Industrial Communications & Ethernet Industrial Machinery Industrial Production Equipment Automated Test Equipment

SKF Ball Bearing， 100 mm ID， 215 mm OD - 6320 M/C3VL0241 SKFs deep-groove， single-row ball bearing is a versatile choice for working with both radial and axial loads。Its low maintenance， does the job quietly and requires little starting torque compared with other types of bearings。This bearing meets both British and EU electrostatic discharge standards， so you can be sure it wont cause damage to your equipment through the build-up or discharge of static electricity。Its one of the most common bearing types in industry and is used in machinery featuring rotating components， such as wind turbines， water pumps and conveyor belts. Open end type Deep-groove design for low friction torque Low noise and vibration Inside diameter of 100 mm Outside diameter of 215 mm Race width of 47 mm Application Information Agricultural machinery Manufacturing equipment Electric motorsSKF 深溝ボールベアリングは、特に汎用性が高くなっています。内径 100 mm、外径 215 mm です。高速及び超高速に適しており、両方向のラジアル荷重とアキシャル荷重に対応し、メンテナンスはほとんど必要ありません。深溝ボールベアリングは、最も広く使用されているベアリングタイプなので、SFKではさまざまなデザイン、タイプ、及びサイズを用意しています。 What applications call for deep-groove ball bearings 1列 円筒形タイプの穴 スチールタイプベアリングDeep-groove ball bearings are an ideal choice in situations where high operating speeds and large loads are combined。Able to support both radial and axial loads， theyre a suitable option where pressure will be applied both along the shaft and from the side.

。Description。Product Restrictions：To access certain features of the ATECC608A， users will need to contact Microchip and sign an NDA contract to obtain the complete datasheet. Due to the required NDA - technical support， an Arduino library， and hookup guide are not provided for users on this product.。The SparkFun ATECC608A Cryptographic Co-processor Breakout allows you to add strong security to your IoT node， edge device， or embedded system. This includes。a。symmetric。authentication，。symmetric。AES-128 encryption/decryption， and much more. As stated above， the ATECC608A has limited Arduino support and the complete datasheet is under NDA with Microchip.。This breakout board includes two Qwiic ports for plug and play functionality. Utilizing our handy Qwiic system， no soldering is required to connect it to the rest of your system. However， we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard. The ATECC608A chip is capable of many cryptographic processes， including， but not limited to：Creating and securely storing unique asymmetric key pairs based on Elliptic Curve Cryptography(FIPS186-3).。AES-128：Encrypt/Decrypt， Galois Field Multiply for GCM。Creating and verifying 64-byte digital signatures(from 32-bytes of message data).。Creating a shared secret key on a public channel via Elliptic Curve Diffie-Hellman Algorithm.。SHA-256 HMAC Hash including off-chip context save/restore。Internal high quality FIPS random number generator.。Embedded in the chip is a 10Kb EEPROM array that can be used for storing keys， certificates， data， consumption logging， and security configurations. Access to the sections of memory can then be restricted and the configuration locked to prevent changes. Each ATECC608A Breakout ships with a guaranteed unique 72-bit serial number and includes several security features to prevent physical attacks on the device itself， or logical attacks on the data transmitted between the device.。A summary datasheet for the ATECC608A is available here. The full datasheet is under NDA with Microchip. You will need to contact them for access to the entire datasheet. Meanwhile， the ArduinoATECCX08 Library currently only supports the ATECC608A with SAMD21 Arduino boards.。We do have much more support for the ATECC508A version of this chip. Please check out our ATECC508A Hookup Guide and Arduino Library(which includes six examples). This will get you familiar with the basics of elliptic curve cryptography and signing/verifying data with the ATECC508A version of the chip.。Note：The I2C address of the ATECC608A is 0x60 and is software-configurable to any address. A multiplexer/Mux is required to communicate to multiple ATECC608A sensors at the default address when on a single bus. If you need to use more than one ATECC608A sensor at the default address， consider using the Qwiic Mux Breakout.。Note：The ATECC608A can be only configured once before it is。PERMANENTLY。locked。. It is advisable that users purchase multiple boards in order to use other configurations and explore the advanced functions of the ATECC608A.。Additionally， this board。IS。capable of encrypting and decrypting data. However， to access these additional features， you will need to contact Microchip and sign an NDA contract to obtain the complete datasheet.。It is recommended that an SparkFun RedBoard Turbo - SAMD21 Development Board is used with this product due to the buffer size required on the I2C bus.。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。。Features。Operating Voltage：2.0V-5.5V(。Default on Qwiic System：3.3V。)。Active Current Draw(for ATECC608A)：16 mA。Sleep Current(for ATECC608A)：<150 nA。Guaranteed Unique 72-bit Serial Number。10 Kb EEPROM Memory for Keys， Certificates， and Data。Storage for up to 16 Keys。256-bit Key Length。Internal High-Quality FIPS Random Number Generator(RNG)。Configurable I2C Address(7-bit)：0x60(。Default。)

Description。Robots are fun， and Arduinos are easy. So wouldn't it be nice if there were kit that included everything you need to get your Arduino device set up to control simple two-motor-circuit buddy? The SparkFun Ardumoto Shield Kit is perfect for any robot enthusiast and includes an Ardumoto Shield， as well as pairs of tires， motors， connectors and wires. And， of course， it's all stuffed in classic SparkFun red box(which may come in handy as robot chassis).。The Ardumoto Shield is an easy-to-use dual-motor controller for Arduino. Combined with an Arduino， the Ardumoto makes fantastic controller platform for RC vehicles or even small autonomous robots. At the heart of the Ardumoto --- the big， black chip right in the middle --- is an L298， one of our favorite dual-channel motor drivers around， capable of driving up to 2A per channel. The board takes its power from the same Vin line as the Arduino board and includes blue and yellow LEDs to indicate active direction. All driver lines are diode protected from back EMF.。Note：The motors included with this kit are not compatible with the Wheel Encoder kit. Sorry for the inconvenience.。Get Started with the SparkFun Ardumoto Kit Guide

Description。The SparkFun MicroMod Environmental Function Board adds additional sensing options to the MicroMod Processor Boards. This Function Board includes three sensors to monitor air quality(SGP40)， humidity temperature(SHTC3)， and CO2 concentrations(STC31)in your indoor environment. To make it even easier to use， all communication is over the MicroMod's I2C bus!。The SGP40 measures the quality of the air in your room or house. The SGP40 uses a metal oxide(MOx)sensor with a temperature controlled micro hotplate and provides a humidity-compensated volatile organic compound(VOC)based indoor air quality signal. Both the sensing element and VOC Algorithm feature an unmatched robustness against contaminating gases present in real world applications enabling a unique long term stability as well as low drift and device to device variation.。The SHTC3 is a highly accurate digital humidity and temperature sensor. The SHTC3 uses a capacitive humidity sensor with a relative humidity measurement range of 0 to 100% RH and bandgap temperature sensor with a temperature measurement range of -40℃ to 125℃. The SHTC3 builds on the success of their SHTC1 sensor with higher accuracy(±2% RH， ±0.2℃)than its predecessor， enabling greater flexibility.。The STC31 measures CO2 concentrations based on thermal conductivity and has two CO2 measurement ranges：0 to 25 vol%； and 0 to 100 vol%. The measurement repeatability is 0.2 vol%， with a stability of 0.025 vol% / ℃. The measurement accuracy depends on the measurement range：0.5 vol% + 3% measured value； 1 vol% + 3% measured value. Using measurements from the SHTC3， the STC31 is able to provide humidity-compensated measurements together with improved temperature compensation. The STC31 can compensate for atmospheric pressure too - which is handy if， like us， you're up in the mountains!。The outstanding performance of these three sensors is based on Sensirion's patented CMOSens(R)technology， which combines the sensor element， signal processing， and digital calibration on a small CMOS chip. The well-proven CMOS technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.。Utilizing our handy M.2 MicroMod connector， no soldering is required to connect it to your system. Simply match up the key on your processor and function board's beveled edge connector to their respective key on the M.2 connector， then secure them to the main board with screws. The MicroMod Environmental Function Board can then be read via the I2C port. The board is equipped with the AP2112 3.3V voltage regulator， I2C pull-up resistors， power LED， jumper to disable the LED， and jumpers for alternative STC31 addresses.。Note：A MicroMod Processor and Main Board are not included with this MicroMod Environmental Function Board. These boards will need to be purchased separately.。MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors and function boards on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!。Get Started with the MicroMod Environmental Function Board。Features。Input voltage range。2.5V to 6.0V。Typ.。5V。via Main Board's USB connector。Typ.。～3.7V to 4.2V。via Main Board's LiPo battery Connector。I/O voltage。3.3V。AP2112 3.3V voltage regulator(rated 600mA)。Power LED。I2C pull-up resistors。Sensirion SGP40 Air Quality Sensor。Uses I2C interface。Address：0x59(default)。Operating voltage range。1.7V to 3.6V(Typ.。3.3V。)。Operating temperature range。-20℃ to +55℃。Typical current consumption。2.6mA。during continuous operation(at 3.3V)。34μA。when idle(heater off)。Output signal。Digital raw value(SRAW)：0 - 65535 ticks。Digital processed value(VOC Index)：0 - 500 VOC index points。Switch-on behavior。Time until reliably detecting VOC events：<60s。Time until specifications are met：<1h。Recommended sampling interval。VOC Index：1s。SRAW：0.5s - 10s(Typ. 1s)。Sensirion SHTC3 Humidity and Temperature Sensor。Uses I2C interface。Address：0x70(default， non-configurable)。Operating voltage range。1.62V - 3.6V(Typ.。3.3V。)。Operating temperature range。-40℃ to +125 ℃。Relative Humidity。Measurement range：0% to 100%。Typical accuracy：±2 %RH。Resolution：0.01 %RH。Temperature。Measurement range：-40℃ to +125 ℃。Typical accuracy：±0.2 ℃。Resolution：0.01 ℃。Typical current consumption(varies based on mode)。4.9μA to 430μA(Normal Mode)。0.5μA to 270μA(Low Power Mode)。Allows the STC31 to compensate for humidity and temperature。Sensirion STC31 CO2 Sensor。Uses I2C interface。Addresses：0x29(default)。， 0x2A， 0x2B， 0x2C。Operating voltage range。2.7V to 5.5V(Typ.。3.3V。)。Operating temperature range。-20 ℃ to +85 ℃。Calibrated for CO2 in N2 and CO2 in air。Measurement ranges。0 to 25 vol% in N2。0 to 100 vol% in air。Accuracy。0.5 vol% + 3% measured value in N2。1 vol% + 3% measured value in air。Concentration and temperature resolution：16-bit。Repeatability：0.2 vol%。Temperature stability：0.025 vol% / ℃。Start-up time：14 ms。Thermal conductivity sensor provides calibrated gas concentration and temperature output。Jumpers。PWR LED。I2C pull-up resistors。STC31 address selection。Note：The I2C addresses that are reserved for each sensor is 0x59(SGP40)， 0x70(SHTC3)， 0x29(STC31). A multiplexer/Mux is required to communicate to multiple SHTC3 sensors on a single bus. The SHTC3 uses the same address as the Qwiic Mux(0x70). For advanced users that are using multiple SHTC3's with the Qwiic Mux， you will need to adjust the Qwiic Mux's default address.

Description。This is the FemtoBuck， a small-size single-output constant current LED driver. Each FemtoBuck has the capability to dim a single high-power channel of LEDs from 0-350mA at up to 36V while the dimming control can be either accessed via PWM or analog signal from 0-2.5V. This board is based off of the PicoBuck LED Driver， developed in collaboration with Ethan Zonca， except instead of blending three different LEDs on three different channels the FemtoBuck controls just one.。For the FemtoBuck， we've increased the voltage ratings on the parts to allow the input voltage to cover the full 36V range of the AL8805 driver. Since the FemtoBuck is a constant current driver， the current drawn from the supply will drop as supply voltage rises. In general， efficiency of the FemtoBuck is around 95%， depending on the input voltage. On board each FemtoBuck you will find two inputs for both power input and dimming control pins and an area to install a 3.5mm screw terminal. Finally at either side of the board you will find small indents or "ears" which will allow you to use a zip tie to secure the wires to the board after soldering them down. This version of the FemtoBuck is equipped with a small solder jumper that can be closed with a glob of solder to double the output current from 330mA to 660mA.