資料來源:https://www.sparkfun.com/products/14257
The Qwiic Mux Shield for Arduino - PCA9548A enables communication with multiple I2C devices that have the same address. Some I2C devices have a selectable address, but many have only one. What if you want to control multiple haptic drivers, multiple accelerometers, or multiple finger sensors? The PCA9548A is a very easy to use multiplexer enabling up to 8 buses. This means you can communicate with 8 of the same device. The PCA9548A can be daisy chained as well, so, if needed, you can use up to eight of the shields at the same time enabling a whopping 64 buses.
This shield has the the PCA9548A powered at 3.3V with all 8 ports powered at 3.3V as well. The master (Arduino) can operate at 3.3 or 5V.
How do I use the PCA9548A? It’s surprisingly easy. Over I2C, you tell the device which port you want to talk to, for example port 3. After that, whatever I2C traffic happens gets sent to port 3. By switching back and forth between ports, it’s easy to talk to multiple devices that have the same address!
What is the difference between the PCA9548A and TCA9548A? Very little. PCA is made by NXP, TCA is made by TI. PCA can operate from 2.3 to 5.5V, TCA can operate from 1.65 to 5.5V. Everything else is identical.
Additionally, there is a large prototyping area with paired holes! Each pair has a horizontal trace connecting them that enables a DIP package or components to be wired together. A white silkscreen line indicates the location of each trace. This trace can be cut with a knife to break the connection if needed.
This product includes the R3 stackable headers to connect to the Arduino Uno, RedBoard, and many other Arduino compatible devices.
The Qwiic system enables fast and solderless connection between popular platforms and various sensors and actuators. You can read more about the Qwiic system here. We carry 200mm, 100mm, 50mm, and breadboard friendly Qwiic cables.
We do not plan to regularly produce SparkX products so get them while they’re hot!
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所述Qwiic復用器盾的Arduino - PCA9548A能夠與多個通信I 2具有相同的地址C的設備。有些I 2 C器件具有可選擇的地址,但很多都只有一個。如果你想怎麼控制多個觸覺驅動器 ,多個加速度計 ,或多個手指傳感器 ?該PCA9548A是一個非常容易使用多路復用器可實現多達8個公共汽車。這意味著你可以用相同的設備8通信。該PCA9548A可以菊花鏈一樣,所以,如果需要的話,你可以在同一時間使用最多的盾牌八個使高達64公交車。
該屏蔽具有供電電壓為3.3V與3.3V時提供動力,以及所有8個端口的PCA9548A。主(Arduino的)可以在3.3或5V操作。
如何使用PCA9548A?這是非常容易的。在I 2 C,你告訴別人你想傾訴,例如端口3.在此之後該端口的設備,無論I 2 C交通情況被發送到端口3.通過來回切換端口之間,很容易交談具有相同地址的多個設備!
是什麼PCA9548A和TCA9548A之間的區別?很少。 PCA由NXP製造,TCA是由TI製造。 PCA可以從2.3至5.5V,可TCA運營從1.65至5.5V。一切是相同的。
此外,還有與配對孔大原型區!每對具有水平跡線連接它們,使一個DIP封裝或部件被連接在一起。白色絲網線表示每個跡線的位置。此跟踪可以用切割刀 ,如果需要斷開連接。
本產品包括可堆疊R3頭連接到Arduino烏諾,RedBoard,以及許多其他的Arduino兼容設備。
所述Qwiic系統使流行的平台和各種傳感器和致動器之間的快速和無焊連接。你可以閱讀更多有關Qwiic系統在這裡 。我們進行200毫米 , 100毫米 , 50毫米和線路板友好 Qwiic電纜。
我們不打算經常產生SparkX產品因此得到他們,而他們是熱的!
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