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Product description: PCF8591- 8-bit I2C v1 A/C and D/A converter
The module has a four-channel 8-bit precision analogue-to-digital converter, and has one digital-toanalogue converter output. It works with voltages from 2.5 V to 6.0 V and communicates through the I2C interface. The board also features: 4.7 kΩ bus line pull-up resistors and a potentiometer, photoresistor and thermistor connectedto the input channels usingconfigurable jumpers.
| Arduino compatible product
In the network you can find asample codefor Arduino module. |
Connection
The leads are soldered out, straight 2.54 mmgoldpinrasterjoints. Thanks to them it is possible to connect the board to the main module (e.g. RaspberryPi orArduino)withwires. There are additional elements on the board: photoresistor, thermistor and potentiometer, which are connected to the input pins via jumpers. If the devices are not to be used, remove these jumpers.
| Pin | Description |
|---|---|
| AOUT | A/C converter output. |
| AIN0 | D/A converter output 0, connected to a potentiometer via a jumper. |
| AIN1 | Output 1 of the D/A converter, connected to a photoresistor via jumper. |
| AIN2 | Output 3 of the D/A converter, connected to the thermistor via a jumper. |
| AIN3 | Output 4 of the D/A converter. |
| SCL | I2C interface clock line, pulled up with a 4.7 kΩ resistor to VCC. |
| SDA | I2C interface data line, pulled up with a 4.7 kΩ resistor to VCC. |
| GND | The weight of the system. |
Transducer specifications
- Supply voltage: 2.5 V to 6.0 V
- Resolution A/C: 8-bit
- Built-in oscillator
- Communication interface: I2C, address: 0x48
- Built-in I2C bus data line pull-up resistors
- Can operate in 4-channel mode or with two differential inputs
- Sampling rate depending on the I2C bus speed
- On the board, apart from the transducer, there are also some:
- Two LEDs
- Termistor
- Phototransistor
- Potentiometer
- Dimensions of the plate: 3.6 x 23 mm
- Weight: 5 g
Useful links |
