Based on the precise, low-offset, linear hall circuit, this module provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. Please note that the chip on-board this module uses the hall effect to measure the current and as such is susceptible to magnetic interference.
This is a set of transmitter and receiver in one of the photoelectric sensor. A detection distance can be adjusted according to the requirements. The sensor has a detection distance, visible interference by small, cheap, easy to assemble, easy to use features, can be widely used robot obstacle avoidance, line piece and many occasions.
Using IO port TRIG, send high level signal of at least 10us. Module automatically sends 8 40KHz square waves, automatically detecting whether a signal returns. If a signal return, a high level is output through the IO port ECHO.
When the module detects an obstacle, the green indicator lights up, giving a low-level output signal in the OUT pin. The module detects distance of 2 - 30cm, detection angle of 35 degrees. Distance can be adjusted through the potentiometer.
This sensor has built in 16-bit AD converter with direct digital output, omitting the need for complex calculation and calibration. It does not distinguish between ambient light. 1 lux high-precision measurement of a wide range of brightness.
Pulse sensor is used to test the heart rate. Students, artists, athletes, creator, game developer, or hobbist can develop interactive work related to heart rate. Sensor should be put on the finger or earlobe for the best results. There is an integrated optical amplifying circuit and noise eliminating circuit to ensure readings are stable and filtered.
The sensor uses high quality FR-04 double material, large area of 55mm x 40mm, treatment of nickel plating on surface which fights oxidation, gives better electrical conductivity, and has superior life performance. Built in comparator output gives a clean signal and good waveform. Sensitivity can be adjusted through the on board potentiometer.
The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurements at up to ± 16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface.
BMP180 is a high precision, small volume, low energy consumption pressure sensor, which is commonly used in mobile devices. It can achieve accurary of 1m, with noise of only 17cm in ultra high resolution noise. The device will operate at only 0.3uA meaning low current draw for battery powered applications. The BMP180 comes fully calibrated and ready to use. Using I2C, the device provides pressure and temperature as 16bit values, which are used along with calibration data within the device are used to provide a temperature compensated altitude calculation.
The HC-SR04 ultrasonic sensor uses sonar to determine distance to objects like bats or dolphins do. This module offers excellent range accuracy and stable readings in an easy-to-use package. Its operation is not affected by sunlight or black material (although acoustically soft materials like cloth can be difficult to detect). Ranging accuracy can reach to 3mm.
The MPU-9255 is the world’s first 9-axis MotionTracking device designed for the low power, low cost, and high performance requirements of consumer electronics equipment including smartphones, tablets and wearable sensors. This breakout board makes it easy to prototype with the InvenSense MPU-9150 by breaking out all the pins you need to standard 0.1" spaced headers. The board also provides I2C pullup resistors and a solder jumper to switch the I2C address of the device.