EASY plug 1602 I2C module is a 16 character by 2 line LCD display with blue background and white backlight. This LCD is ready-to-use because it is compatible with the Arduino Liquid Crystal Library. The original 1602 LCD needs 7 IO ports to be up and running, this easy plug design makes the wire connection easier than ever.
keyestudio 2004 I2C Module is a 20 character by 2 line LCD display with Blue background and White backlight. The original 2004 LCD needs 7 IO ports to be up and running, ours is built with Arduino IIC/I2C interface, saving you 5 IO ports.
OLED is short for organic light emitting diode. On the microscopic level, an OLED display is a matrix of organic LEDs that light up when they emit energy. Old LCD (Liquid Crystal Display) technology uses electronically controlled polarizers to change the way light passes or does not pass through them. This requires an external backlight that lights up the whole display underneath. This uses a lot of energy because at the time the display is on, enough light for all pixels must be provided. The new OLED technology only uses electricity per pixel. Because each pixel creates its own light, only the pixels that are on use electricity. This makes OLED technology very efficient; also, the way these types of OLEDs are built allows them to be very thin compared to LCD.
This Bluetooth module can easily achieve serial wireless data transmission. Its operating frequency is among the most popular 2.4GHz ISM frequency band (i.e. Industrial, scientific and medical). It adopts Bluetooth 2.1+EDR standard. In Bluetooth 2.1, signal transmit time of different devices stands at a 0.5 seconds interval so that the workload of bluetooth chip can be reduced substantially and more sleeping time can be saved for bluetooth.
BMP180 is a pressure sensor with high precision, compact design and low power consumption. It can be used in mobile devices. Minimum absolute accuracy reaches 0.03hpa with only 3uA power consumption.
MQ135 has a high sensitivity to Ammonia, sulfide, benzene vapor, smoke and other harmful gases. It can detect various harmful gases, making it a cost-effective choice suitable for multiple applications.
This analog gas sensor - MQ3 is suitable for detecting alcohol. It can be used in a Breath analyzer. Also it has high sensitivity to alcohol and low sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.
This analog gas sensor - MQ2 is used in gas leakage detecting equipment in consumer electronics and industrial markets. This sensor is suitable for detecting LPG, I-butane, propane, methane, alcohol, Hydrogen and smoke. It has high sensitivity and quick response. In addition, the sensitivity can be adjusted by the potentiometer.
This DHT11 Temperature and Humidity Sensor features a digital temperature and humidity sensor complex with a calibrated digital signal output. It can detect temperature and humidity of the surroundings. It has excellent quality, fast response, anti-interference ability and high cost performance advantages.
The ADXL345 module is a 3-axis MEMS accelerometer with low power consumption and compact design. It’s of high resolution of 13-bit, measurement up to ±16g(gravitational force). Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI or I2C digital interface.