Electronics From Stemedu on Amazon

Stemedu 3PCS HC-SR501 PIR Human Body Motion Sensors, Infrared IR Motion-Activated Switch, Distance Detector Sensor Module for Indoor Stairs Corridor Night Light (Pack of 3pcs)

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Features

[Document Support] The usage reference link of HC-SR501 PIR infrared sensor: https://www(DOT)mysensors(DOT)org/build/motion

[Operating voltage range] DC 4.5-20V

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Stemedu HC-SR505 Mini Infrared PIR Motion Sensor, Micro IR Pyroelectric Human Movement Detector Sensors Module (Pack of 5)

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Features

5 PCS HC-SR505 PIR human body motion detector sensors, full-automatic induction, excellent sensitivity. One kind of trigger modes, it is easy to operate.

HC-SR505 body sensing module has small and exquisite appearance, it is convenient to carry.

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Stemedu 12 Bits Individually Addressable WS2812B 5050 RGB LED Lamp Pixel LED Ring Light with Integrated Drivers for Arduino Raspberry Pi ESP8266 (2PCS)

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Stemedu 5pcs HC-SR501 PIR Infrared Motion Sensor IR Human Motion Detection Module for Arduino Raspberry Pi

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Features

HC-SR501 Delay Time: 0.5-200S (adjustable), the range is (0.xx second to tens of second), the delay time can be adjusted by using the potentiometer on the HC-SR501 motion sensor.

Operating voltage range: DC 4.5-20V; Quiescent Current: <50uA; Trigger: L can not be repeated trigger/H can be repeated trigger (Default repeated trigger)

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Stemedu USB to ESP8266 ESP-01 Serial Wireless Transceiver 4MB SPI Flash WiFi Module ESP-01S Prog WiFi Programmer Downloader CH340C Chip with Reset Button

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Features

🚩 This ESP-01S downloader is using CH340C chip, added ESP8266 auto-download circuit, it is very convinent for user to download program, update firmware, debugging.

🚩 ESP-01S Prog WiFi Programmer support Arduinos IDE, Ai-thinker ESP8266 Flasher and Espressif FLASH_DOWNLOAD_TOOLS

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Stemedu 5 PCS 12V Piezoelectric Active Buzzers Electric Buzzer Alarm Continuous Beep Sounder Piezo Buzzers High-Decibel 110dB Siren Speaker DC 6-15V

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Features

🚩 This piezoelectric alarm siren is an active buzzer

🚩 Rated voltage is 12V DC, operating voltage is 6-15V DC.

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Stemedu LM393 Sound Sensor Module - High Sensitivity Microphone Sound Detection Sensor with 3.3-5V Digital Onboard Potentiometer Led Indicator for Ar-duino (Pack of 5)

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Features

This is a LM393 Sound Detection Sensor Module for Arduino to detect whether sound has exceeded a threshold value. The sound is detected via microphone and fed into an LM393 op-amp.

Working voltage: DC 3.3-5V；Sound detected LED: The signal light when there is sound

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Stemedu ESP32-CAM Development Board WiFi Bluetooth Module, Dual-core 32-bit CPU Built-in Flash Ai Thinker Camera Module OV2640 for Arduino

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Features

🚩 The ESP32 camera development board is a WIFI+ bluetooth dual-mode module that uses PCB on-board antennas and cores based on ESP32 chips. It can work independently as a minimum system.

🚩 The ESP32-CAM can be widely used in various IoT applications. It is suitable for home smart devices, industrial wireless control, wireless monitoring, QR wireless identification, wireless positioning system signals, and other IoT applications. It is an ideal solution for IoT applications

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Stemedu 5PCS RCWL-0516 Motion Detection Sensor, Microwave Radar Sensor Switch Module for Arduino ESP8266 Nodemcu Wemos for Animals Detector, Detection Distance 5-7m, Better Than HC-SR501

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Features

🚩 This RCWL-0516 module has the characteristics of high sensitivity, high induction distance, high reliability, large induction angle, wide power supply voltage range, etc. it is widely used in various kinds of human body induction lighting and alarm and so on.

🚩 The RCWL-0516 microwave radar sensor module can detect inert object at the condition that it has enough density, volume and it is in motion.

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Stemedu 2PCS USB to ESP8266 Adapter Module CH340G ESP01 Programmer Wireless Transceiver Serial Board UART PROG Module, 115200 Baud Rate

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Features

🚩 Easy to use: USB to ESP-01 adapter module has CH340G USB to TTL driver IC onboard, easily use your computer to do ESP-01 functional debugging, and ESP01 Programmer has a little rocker switch on the side which is very handy.

🚩 ESP8266 ESP-01 Serial WiFi Wireless Transceiver Module can be directly plugged into the yellow pin header without any cables to connect. Plug and play, this little PROG gadget makes programming the ESP 01 a breeze, it's a must have for installing firmware.

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