Fulabs PCF8591 AD / DA Conversion of to Digital /Digital-to- Converter Module Temperature Illumination / With Cable

Description

- The module chip uses PCF8951.

- The module supports the acquisition of 4 external voltage inputs (voltage input range: 0 - 5V).

- The module integrates a photosensitive resistor, and the ambient light intensity value can be acquired via AD.

- The module integrates a thermistor, and the ambient temperature value can be acquired via AD.

- The module integrates 1 channel of 0 - 5V voltage input acquisition (input voltage adjusted by the blue potentiometer).

- The module has a power indicator (the indicator lights up when the module is powered).

- The module has a DA output indicator. When the voltage at the DA output interface of the module reaches a certain value, the DA output indicator on the board will light up. The greater the voltage, the more obvious the brightness of the indicator.

- The module’s PCB size: 3.6cm * 2.3cm.

Standard double - sided board, board thickness 1.6mm, beautiful and neat layout. There are through - holes around, with a diameter of 3mm, convenient for fixing.

III. Module Interface Description

The left and right sides of this module respectively extend 2 rows of pin headers. The descriptions are as follows:

Left Side (AOUT is the chip’s DA output interface)

AOUT: Chip DA output interface

AIN0: Chip analog input interface 0

AIN1: Chip analog input interface 1

AIN2: Chip analog input interface 2

AIN3: Chip analog input interface 3

Right Side (SCL is the IIC clock interface, connected to the MCU IO port; SDA is the IIC digital interface, connected to the MCU IO port)

SCL: IIC clock interface, connected to the MCU IO port

SDA: IIC digital interface, connected to the MCU IO port

GND: Module ground, external ground

VCC: Power interface, external 3.3V - 5V

IV. Instructions for Using the Module’s Red Jumper Caps

The module has 3 red jumper caps, with the following functions:

P4: Connect the P4 jumper cap to select the thermistor to be connected to the circuit.

P5: Connect the P5 jumper cap to select the photosensitive resistor to be connected to the circuit.

P6: Connect the P6 jumper cap to select 0 - 5V adjustable voltage to be connected to the circuit.