I2C Expander - PCF8574N
Specifications:
- Integrated circuit type peripheral circuit
- Kind of integrated circuit 8bit, I/O expander
- Interface I2C
- Mounting THT
- Supply voltage 2.5...6V DC
- Case DIP16
- Frequency 100kHz
- DC supplying current 40µA
- Output current 50mA
PCF8591 YL-40 AD DA
This particular module is suitable for tutorial use and perhaps for some hobbyists. Its drawback is that its I2C address is hard-wired to all zeros. (Note that I2C is a very effective 2-wire communications standard that is used by many small semiconductor devices such as microcontrollers and sensor peripherals.) If the address lines could be jumpered high or low, then several identical modules could be placed on the same I2C lines. I would therefore recommend the alternative module named the Mini PCF8591 AD DA Shell Module because it has that capability.
YwRobot Breadboard Power Supply
1. A convenient power module supplying especially an MB102 breadboard, supporting 5 V or 3.3 V output.
2. Input voltage: DC 6.5-12 V.
3. Output voltage: 3.3V/5V; Maximum output current: 700 mA.
4. With a power switch and indicator LED; two circuits at top and bottom for separated control – can be changed between 0V, 3.3V and 5V.
5. Uses a USB Type-A 5V output port for control board and a voltage regulator chip 1117-5.0V/1117-3.3V.