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 https://www.seeedstudio.com/Wio-Terminal-p-4509.html Wio Terminal: ATSAMD51 Core with Realtek RTL8720DN BLE 5.0 & Wi-Fi 2.4G/5G Dev Board $30 Compatible with Arduino and MicroPython, Wio Terminal is an ATSAMD51-based microcontroller with wireless connectivity supported by Realtek RTL8720DN. Its CPU speed runs at 120MHz (Boost up to 200MHz). Realtek RTL8720DN chip supports both Bluetooth and Wi-Fi providing the backbone for IoT projects. The Wio Terminal itself is equipped with a 2.4” LCD Screen, onboard IMU(LIS3DHTR), Microphone, Buzzer, microSD card slot, Light sensor, and Infrared Emitter(IR 940nm). Key Features Powerful MCU: Microchip ATSAMD51P19 with ARM Cortex-M4F core running at 120MHz Reliable Wireless Connectivity: Equipped with Realtek RTL8720DN, dual-band 2.4Ghz / 5Ghz Wi-Fi Highly Integrated Design: 2.4” LCD Screen, IMU and more practical add-ons housed in a compact enclosure with built-in magnets & mounting holes Raspberry Pi 40-pin Compatible GPIO Compatible with

  3M Z-Axis Conductive Tape 9703 - 2x6 (50mm x 150mm) Strip ID: 1656 - $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits Z-axis tape is made by 3M, and is used to bond two conductive surfaces together and allow a small (we'd say keep it under 100mA) current to flow through the tape. But here's the cool part: its  only conductive across the thickness of the tape itself, not along the length or width . Mindblowing, right? We took a macro shot of the tape above so you can see how it works. Its a regular adhesive tape with little chunks of conductive material every 0.1mm or so. The adhesive does the bonding, the little chunks do the conducting.

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  Geekcreit® lcr-t4 12864 lcd graphical transistor tester resistance capacitance esr scr meter Sale - Banggood.com|Shopping USA EEVblog #1020 - Is A $7 LCR / Component Tester Any Good? - YouTube Specifications: Resistor: 0.1ω-50Mω Capacitor: 25pF-100000uF Inductance: 0.01mH - 20H Working power: DC-9V Standby current: 0.02uA Operating current: 25mA Material: Metal+Plastic Size: about 11.1cm/4.37"x2.6cm / 1.02"x8.5cm/3.34" [Conversion: 1cm=0.3937 inch, 1inch=2.54 cm] Features:   1. Support boot voltage detection function 2. Automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, triodes, resistors, and capacitors. Automatically testing the component leads and displaying them on the LCD 3. The forward bias voltage of the emitter transistor can be determined by detecting the amplification factor and base number of a transistor, a MOSFET protection diode, and the like 4. Measure gate threshold voltage and ga

  Arduino Library & Examples | Monochrome OLED Breakouts | Adafruit Learning System adafruit/Adafruit_SSD1306: Arduino library for SSD1306 monochrome 128x64 and 128x32 OLEDs

NodeMcu Lua WiFi Internet Things Amica V2 Development Board ESP8266-12E CP2102 | eBay Overview The NodeMcu is an open-source firmware and development kit that helps you to prototype your IOT product within a few Lua script lines.The Development Kit based on ESP8266, integates GPIO, PWM, IIC, 1-Wire and ADC all in one board. Power your developement in the fastest way combinating with NodeMCU Firmware. Open-source, Interactive, Programmable, Low cost, Simple, Smart, Wi-Fi enabled. Code like arduino, but interactively in Lua script. Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware. This is Amica V2 Version .The V2 fixes the short comings of the initial board, it’s more narrow and fits nicely into bread boards. The chip was upgraded from an ESP-12 to an ESP-12E. Description: Amica  Version  V2 . Use CP2102 instead of CH340G.  Breadboard friendly . U pgraded from a ESP8266-12 to a  newer enhanced  ESP8266-12E Flash size

  5x RCWL 0516 Microwave Radar Sensor Module Body 4-28V CL Induction C1U0 | eBay Description: Description: 100% brand new and high quality 1.Operating Voltage:4-28V 2.Operating Current:2.8mA (typical);3mA (max) 3.Detection Distance:5-9m 4.Transmitting Power:20mW (typical);30mW (max) 5.Output Voltage:3.2-3.4V 6.Output Voltage Driving Capacity:100mA 7.Trigger Way:repeat trigger 8.Output Control Low Level:0V 9.Output Control High Level:3.3V 10.Operating Temperature:-20~80 celsius 11.Storage Temperature:-40~100 celsius Adjustment Part Introduction: 1.C-TM Adjust repeat trigger time,default trigger time is 2s;increasing capacitor's capacity will make repeat trigger time longer;and actual counting trigger time can operate as below: Stick capacitor on C-TM,test 9196 3-pin frequency F,repeat trigger time T=(1/f)*32768 2.R-GN Detection distance adjustment;connect with resistor and detection distance will become shorter;if not connect,detection distance is 7m;if connect with 1M ohm resistor,

1 channel 3.3v low level trigger relay module optocoupler isolation terminal bestep for arduino - products that work with official arduino boards Sale - Banggood.com Description:   Normally open interface maximum load: AC 250V/10A, DC 30V/10A. SMD optocoupler isolation, strong driving capability, stable performance; trigger current 5mA. Fault-tolerant design, the relay will not move even if the control line is broken. Power indicator (green), relay status indicator (red). The interface is designed humanized, and all the interfaces can be directly connected by wiring terminals, which is very convenient. Two module interface:   1. DC+: Connect the power supply positive pole (voltage 3.3V). 2. DC-: Connect the power negative pole. 3. IN: Low level (3.3V) control relay pull in.   Relay output terminal:   1. NO: Relay normal open, the relay suspends before pulling in, and then short-connect with the COM. 2. COM: Relay common interface 3. NC: Relay normal close, short connected with COM befo

 https://www.banggood.com/5pcs-LM393-DC-5V-Optoelectronic-Sensor-PIR-Sensor-Module-With-LED-Instruction-Slot-Single-Signal-p-1352787.html Specifications:   The distance between PCB two circular hole (point to point center) is 1.5cm, and the aperture is 0.3cm. Slot type optocoupler slot width : 10mm Main chip: LM393, slot type optocoupler H2010 Working voltage: DC 5V Size: 32mm x11mm x 20mm   Characteristic :   1. There is a signal output indication. 2. Single signal output. 3. When the object is blocked, the output is high level (LED lights out), and the output is low when there is no shelter. (LED lights). 4. The sensitivity is not adjustable. 5  It can be used for workpiece counting and motor speed measurement. 6. Circuit board output switch quantity   Package Included:   5 x Optoelectronic PIR Sensor Module