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電動小鬼月 - 突圍發展局
資料來源：https://www.seeedstudio.com/Electric-Imp-April---Breakout-Development-Board-p-1972.html
Description
What is the electric imp? In essence, the Imp provides an easy, integrated way to connect almost any hardware device both to other devices and to internet services. It's more than just a WiFi card, or even a WiFi module with processing built in - it's an integrated platform that deals with the drudgery of connectivity, allowing you to concentrate on the application instead of the mechanics.
April is a very simple breakout board with the minimum required components for an imp001 device.
Power
Power can be supplied using a USB Mini-B cable from a USB Charger or a standard USB Port, though the data lines are not connected to anything. Optionally, a battery connector can be soldered to the battery pads P+ and P-. April can operate from any DC voltage from 3.3V to 17V, and tolerates voltages down to -12V. This is helpful for any application with removable batteries where they may be inserted backwards by the user. You may select between USB power and battery power by placing a shunt on the power select header. Please note that April does not have any circuitry for charging a battery and you should never short USB power to the battery pack.
April uses the TI TPS62172 DC/DC Buck Power supply for 3.3V. It can provide an additional 100mA@3V3 to any boards connected to April. However, if your application requires more than 100mA@3V3, it must have its own supply.
The three-pin jumper allows selection of the DC input source: the jumper between the middle pin and the side labeled USB for USB power, and the other way for battery pack power (soldering the input leads onto the P+ and P- pads).
Signals
All of the signals from the imp come out to a header. For descriptions of pin of function see the Imp Pin Mux.
Card Detect
If your application requires the card detect signal, it must be pulled up by soldering an 0402 resistor R3 or on an external board. The signal is connected to GND whenever a card is present in the slot, so we recommend using a 100kΩ or higher resistor to save power.
Vin
This pad is connected to the input voltage being fed to the board - either the USB 5V supply or the reverse-voltage protected battery pads.
Resources
Any further questions, please view the Electric Imp forum.
Technical Details
| Dimensions | 100mm x 57mm x 5mm |
| Weight | G.W 10g |
| Battery | Exclude |
描述
什麼是電動小鬼？在本質上，進出口提供了幾乎所有的硬件設備連接兩者到其他設備和互聯網服務一種簡單，集成的方式。這不僅僅是一個WiFi卡，甚至建在處理的WiFi模塊 - 它是一個集成平台，與連接的苦差事交易，讓您專注於應用程序，而不是機制。
四月是一個非常簡單的接口板與一個imp001設備所需的最小組件。
功率
功率可以使用USB迷你B電纜從USB充電器或標準USB端口來提供，雖然數據線沒有連接到任何東西。可選地，電池連接器可以被焊接到電池焊盤P +和P-。四月可以從任何直流電壓運營從3.3V至17V，並容許電壓低至-12V。這對於具有可拆卸電池，其中它們可以由使用者向後插入任何應用程序的幫助。您可以通過將分流電源選擇頭USB電源和電池電源之間進行選擇。請注意，四月沒有為電池充電的電路和你應該從來不缺乏USB電源給電池組。
四月採用了TI的TPS62172 DC / DC降壓型電源的3.3V。它可以提供一個額外的100mA在3V3連接到任何四月板。但是，如果你的應用需要超過100mA @ 3V3以上，就必須有自己的電源。
三針跳線允許DC輸入源的選擇：針的中間和USB電源側面標有USB接口，以及電池供電的其他方式之間的跳線（焊接輸入通往P +和P-墊）。
信號
所有從信號的小鬼出來的頭部。對於功能引腳的描述見小鬼管腳复用 。
卡檢測
如果應用程序需要在卡檢測信號，則必須通過焊接的0402電阻R3或外部電路板被拉高。該信號連接到GND只要卡插槽中存在，因此，我們建議使用100K和歐米茄;或更高的電阻，以節省電力。
VIN
此墊被連接到輸入電壓被饋送到板 - 將USB 5V電源或反向電壓保護電池墊。
資源
＆公牛; 示意圖
＆公牛; Gerber文件
＆公牛; 物料清單
＆公牛; Altium的源文件
有任何疑問，請查看電氣進出口論壇 。
