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- Description
- The module chip adopts PCF8951 and supports external 4-channel voltage input acquisition (voltage input range 0-5v)
- Integrated photoresistor, can collect accurate ambient light intensity value through AD, integrate thermistor, can collect accurate ambient temperature value through AD, integrate 1 channel 0-5V voltage input acquisition (adjust the input voltage through blue potentiometer)
- With power indicator (lights up after powering the module), with DA output indicator, when the output voltage of the module DA output reaches a certain value, the DA output indicator on the board will be illuminated. The higher the voltage, the more obvious the brightness of the indicator;
- Standard double panel, board thickness 1.6mm, beautiful layout, through holes around, hole diameter: 3mm, easy to fix
- PCB size: 3.6cm*2.3cm
Description:
The PCF8591 is a monolithically integrated, individually powered, low power, 8-bit CMOS data acquisition device. Voltage range: 2.5V-6V.The PCF8591 has four analog inputs, one analog output, and one serial I2C bus interface. The three address pins A0, A1 and A2 of the PCF8591 can be used for hardware address programming, allowing access to eight PCF8591 devices on the same I2C bus without additional hardware. The address, control, and data signals input and output on the PCF8591 device are serially transmitted over a two-wire bidirectional I2C bus.
The left and right side of the module, respectively, outside the expansion of 2-pin connector, respectively, as follows:
Left AOUT chip DA output interface
AINO chip analog input interface 0
AIN1 chip analog input interface 1
AIN2 chip analog input interface 2
AIN3 chip analog input interface 3
SCL IIC clock interface on the right then single-chip IO port
SDA IIC digital interface connected MCU IO port
GND module to ground
VCC power interface external 3.3v-5v
Module a total of three red short-circuit cap, respectively, as follows:
P4 connected to P4 short-circuit cap, select the thermistor access circuit
P5 connected to P5 short-circuit cap, select the photosensitive resistor access circuit
P6 connected to P6 short-circuit cap, select 0-5V adjustable voltage access circuit
Package Included:
3x PCF8591 Module
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