Voltage Divider Module for boards compatible with Arduino
- Working Voltage: 5.0 V DC
- Measurement Accuracy: <=1%
- Input Range: 25V max
- Resistor Tolerance: 0.5%
- Temperature Coefficient: 50PPM/°C
- Ratio: 0.18 ( ADC reference voltage / 0.18)
- External voltage and grove interface
- Eliminates the need to connect resistance to the input interface
- Adjustable gain
- Easy to use
VOLTAGE SENSOR
VS1053 MP3 Recording Module Development Board with Onboard Recording For UNO
- SPI interface, the control signal lines are led out
- A headphone and stereo output
- Onboard Microphone for recording
- A line-in input interface
- Separate 3.5 mm Jack for MIC and Speaker
- Onboard Power Indicator
- 3V and 2.8V of LDO chip AMS-1117 on board provides up to 800mA current
- Can play a variety of music formats, support for OGG encoding real-time recording
- A single power supply: +5 VDC
- 288 Mhz crystal
- TF card slot
Water flow sensor SEN-HZG1WA Pulse Output 4~45L/min Liquid Switch Flowmeter
- Model: SEN-HZG1WA.
- Use voltage: DC 5V.
- Connect way: G1”, 60*34*34(mm).
- Working voltage range: DC 4.5 ~18V.
- Working current: 15mA.
- Test range: 4~45L/min (m³/h).
- Fit media: water.
- Working pressure: 1.75MPa.
- Outside nominal diameter: G1 (mm).
- Instantaneous flow pulse characteristics: F= [5Q-3]±10%, F means instantaneous pulse value(Hz),Q means instant flow(L/min).
- Insulation resistance = 100MO.
- Electric strength: AC 500V, 50Hz.
- Precision grade: +-10%.
- Working temperature: 60 degree C
- Type: vane-wheel type flowmeter.
Water Level Sensor
WeMos D1 ESP Wroom 02 Board ESP8266 Mini WiFi Nodemcu Module 18650 Battery
- One AD inputs.
- Micro USB inputs.
- One programmable LED (D0).
- AUTO PROGRAM circuit.
- ESP8266 (ESP-WROOM-02 With TELEC) is equivalent to the NodeMCU.
- Analog Input (AD): Built-in dividing resistor (AD = 220K ADC 100K = GND).
- There is a SOLDER terminal for SLEEP MODE.
- Compatible With Arduino andNodeMCU.
- Operation and charging are possible at the same time.
- 18650 charging circuit including the 5V boosting circuit with TP5410.
- Overcharge protection, over-discharge protection built-in.
- LED: Red = Charging, Green = Full charging.
- 3000 mA 18650 It is possible to operate for more than 17 hours on a battery.
- Integrated 18650 battery charging and discharging system.
- One switch controls whether the 18650 battery is on power or not.
- OLEDs SDA and SCL can connect to the D1 pin and the D2 pin respectively.
- The five buttons can be controlled by FLATH, RSET, D5, D6, and D7 respectively.
- The 5 Digital pins can configure the write/read/interrupt/PWM/I2C/one-wire supported separately.
- Operation and NodeMCU consistent, adding a programmable LED, you can use GPIO16 to control; display 8266 running status and other functions. Integrated OLED and five buttons, more convenient for development.
- The design concept originates from the open-source project NodeMCU; the development board integrates 18650 charging and discharging systems with charging and discharging protection. At the same time, an OLED and five directional buttons are integrated to facilitate the development.
WeMos D1 Lithium Battery Charger Board with Mini USB
- Charging Voltage: max: 10V, recommend: 5V
- Charging Current: max: 1A
- Lithium Battery voltage: 3.3-4.2V
- Boost Power Supply: 5V(max: 1A)
- Can use D1 mini without a USB cable, it's really wireless
- Can use D1 mini anywhere, using this battery shield and a lithium Battery.
- High reliability
- Charging, when the battery run out, you do not need to unplug the battery, just use the USB port to charge.
Wemos D1 Mini ESP8266 NodeMCU WIFI board for Arduino
- Microcontroller: ESP-8266EX
- Operating Voltage: 3.3 V
- Digital I/O Pins: 11
- Analog Input Pins 1(Max input: 3.2V)
- Clock Speed: 80MHz/160MHz
- Flash: 4M bytes
- Length: 34.2mm
- Width: 25.6mm
- Use BRT (Bias Resistor Transistor)
- Easier into flash mode.
- 30% increase in radiating area
- Good stability.
- 11 digital input/output pins, all pins have interrupt/PWM/I2C/one-wire supported(except for D0)
- 1 analog input(3.2V max input)
- Micro USB connection
- Compatible with Arduino
- Compatible with Node MCU
- Support OTA wireless uploading
- 11 x I/O pins,1 x ADC pin
WEMOS D1 Pro mini-16m External Antenna Connector ESP8266 WIFI Networking Smart Component
Wireless Charging Module – 5V
- Input Voltage: 5Vdc
- Input Voltage(limits): 5Vdc
- Output Voltage: 5Vdc
- Output Current(maximum): 1.2A
- Output Current(no-load): 30~50mA
- Transmitter Coil Inductance: 3.7uH
- Receiver Coil Inductance: 14uH
- Transmit-receive distance: 2-10mm
- Transmitter :22.1*13.1*3.2mm
- Receiver: 24.2*9.8*5.36mm
- Coil Diameter: 43mm
- Coil Height: 2.3mm
- Magnetic coupling resonance technique
- Insulation Coil
- Compact Design
- Stable power supply
- Insulation Coil
- Space-saving design
WS2812 LED BREAKOUT BOARD
- Input Voltage: -0.5～VDD+0.5V
- Supply voltage: 5v
- Operating voltage: 4v -7v
- Integrating control circuit and RGB chip
- Built-in signal reshaping circuit
- Built-in electric reset circuit and power lost reset circuit
- 256 brightness and 16777216 colour display
- Viewing angle: 120 degree
- Cascading port transmission signal
- Red Vf: 1.8~2.2V
- Green Vf: 3.0~3.2v
- Blue Vf: 3.2~3.4V
- Red Wavelength: 620~630 nm
- Green Wavelength: 515~530 nm
- Blue Wavelength: 465~475 nm
- Red luminous intensity(20mA): 550~700mcd
- Green luminous intensity(20mA): 1100~1400mcd
- Blue luminous intensity(20mA): 200~400mcd
- Dimension: 1.8*1.3*0.8mm
