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WEMOS ESP8266 D1 Pro mini-16 m External Antenna ConnectorFeatures-11 digital input/output pinsInterrupt/PWM/I2C/one-wire1 analog input(3.2V max input)16M bytes(128M bit) FlashExternal antenna connectorBuilt-in ceramic antennaNew CP2104 USB-TO-UART IC..

SparkFun Current Sensor Breakout ACS723Features-Analog output with bandwidth adjustable to 80kHz.The bandwidth on the ACS723 Sensor Breakout width filter has been set to 20kHz to reduce noise when using at high gains. The full 80KHz bandwidth that the sensor is capable of can be recovered by closing..

Lenovo Thinkpad T460 Laptop Speaker..

Dell OEM Precision Workstation 3620 Desktop Internal Chassis Speaker - GF6G2..

WeMos D1 ESP Wroom 02 Board ESP8266 Mini WiFi Nodemcu Module 18650 BatteryFeatures-One AD inputs.Micro USB inputs.One programmable LED (D0).AUTO PROGRAM circuit.ESP8266 (ESP-WROOM-02 With TELEC) is equivalent to the NodeMCU...