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Product description: SparkFun QwiicBus Kit - SparkFun KIT-17250
A set from SparkFun consisting of modules for building a communication system based on QwiicBus. It includes two QwiicBus EndPoint end modules , one QwiicBus MidPoint adapter and two Ethernet cables . The boards are equipped with the PCA9615 converter circuit, which converts the I2C lines into differential signals. The communication obtained in this way is much more resistant to the influence of an external magnetic and electric field, and the data transmission distance is a maximum of 30 meters.
Kit contents
SparkFun QwiicBus Kit contents.
Communication in QwiicBus
QwiicBus transmits data using the I2C protocol (does not require changing to RS-485 or 1-Wire) - it uses differential transfer for this purpose. It allows you to quickly and conveniently connect other QwiicBus system peripherals, such as MidPoint, all via an Ethernet cable.
Application of the QwiicBus system
- Building a network of sensors as part of home automation
- Extending the scope of projects based on I2C communication
- Due to the high resistance to interference, it can be used near their sources, e.g. motors
Technical specification of QwiicBus EndPoint
- Usage: convert two default I2C signals (SDA data line and SCL clock line) into four differential signals : two for SCL and two for SDA.
- I2C supply voltage: 2.3 V to 5.5 V
- Differential supply voltage: 3.5 V to 5.5 V
- Built-in IC type: PCA9615
- Pins pitch for self-soldering: 2.54 mm
- Maximum transmission distance using the QwiicBus system: up to 30 m
QwiicBus EndPoint - SparkFun COM-16988.
QwiicBus MidPoint - SparkFun COM-18000.
Technical specification of QwiicBus MidPoint
- Usage: convert two default I2C signals (SDA data line and SCL clock line) into four differential signals : two for SCL and two for SDA.
- I2C supply voltage: 2.3 V to 5.5 V
- Differential supply voltage: 3.5 V to 5.5 V
- Buck LMR33630 regulator supply voltage range: 3.6 V to 36 V
- Built-in IC type: PCA9615
- Pins pitch for self-soldering: 2.54 mm
- Maximum transmission distance using the QwiicBus system: up to 30 m
