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1.You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your para Arduino when you realize "Uh oh, this chip has a fixed I2C address, and from what I know about I2C, you cannot have two devices with the same address on the same SDA/SCL pins!" Are you out of luck? You would be, if you didn't have this ultra-cool TCA9548A I2C 1-to-8 I2C multiplexer.
2.Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command.
3.Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part.
4.Like all Adafruit breakouts, we put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.
Specification:
Interface: I2C IIC
Chip: TCA9548A
Selectable I2C address: 0x70-0x77
Working Voltage: 1.65-5.5V
Max Clock Frequency: 400 KHz
Package Included:
5 x TCA9548A I2C IIC Multiplexer Breakout Board
planetar
Reseñado en Alemania el 29 de agosto de 2024
Kam prompt, funktioniert wie erwartet
Moreno Manzini
Reseñado en Italia el 17 de julio de 2024
Mi sto scatenando con i device I2C e questo MUX è l'ideale per tenere i canali separati.
Giovanni V.
Reseñado en Italia el 6 de mayo de 2024
Nulla da eccepire: ho già provato ad usarli e sono molto versatili. Dipende comunque dal tipo di applicazione che si vuole gestire con dispostivi I2C che hanno medesimi indirizzi e che con questo dispositivo vengono visti separatamente.
Phoebe
Reseñado en el Reino Unido el 29 de mayo de 2023
Really liked these.
Delphimaker
Reseñado en España el 6 de diciembre de 2023
Sin fallos sin problemas cinco estrellas muy recomendable
Dj
Reseñado en el Reino Unido el 13 de octubre de 2023
Arrived prompt in full n exactly as described.
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