“Microduino-Amplifier”的版本间的差异
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*Small, cheap, stackable and open | *Small, cheap, stackable and open | ||
*Open hardware circuit design and Arduino compatible programming development environment; | *Open hardware circuit design and Arduino compatible programming development environment; | ||
− | * | + | *Uniform Microduino interface standard and rich peripheral modules, capable of having a fast and flexible connection and extension with other modules and sensors in accord with Microduino interface standard; |
*Easy to be integrated to pegboards with a 2.45-pitch female header connector interface. | *Easy to be integrated to pegboards with a 2.45-pitch female header connector interface. | ||
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==Specifications== | ==Specifications== | ||
*Offer 2.2W output for 4Ω load; | *Offer 2.2W output for 4Ω load; | ||
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==Development== | ==Development== | ||
− | *Make sure the | + | *Make sure the current(5v) can reach 500ma. The FT232R debugging is not recommended since FT232R's output current is small. |
===Arduino library and supported package=== | ===Arduino library and supported package=== | ||
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===How to use the library=== | ===How to use the library=== | ||
− | *The CS pin of Microduino-SD module | + | *The CS pin of Microduino-SD module needs to be changed from D4 in the original library to D7; |
− | *Since the original library can not | + | *Since the original library can not support Microduino Core+ directly, we have modified this library to solve this problem; |
− | *TF card(2GB of memory and lower) in FAT format | + | *TF card(2GB of memory and lower) in FAT format is recommended. |
− | === | + | ===Low-power shutdown of external control=== |
*In many applications, the shutdown port's level conversion is finished by the controller, but it can also be achieved by a one-way blade switch; | *In many applications, the shutdown port's level conversion is finished by the controller, but it can also be achieved by a one-way blade switch; | ||
**Connect a pull-up resistor on the third pin of the second row pin female near the D13 pin, then disconnect the switch. This pin will be pulled low, so the Amplifier begin to work; | **Connect a pull-up resistor on the third pin of the second row pin female near the D13 pin, then disconnect the switch. This pin will be pulled low, so the Amplifier begin to work; | ||
− | **Turn on the | + | **Turn on the switch,the pull-up resistor will pull up the voltage,making Microduino-LM4863 stop working. |
==Application== | ==Application== |
2014年8月22日 (五) 02:51的最新版本
Language | English |
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Microduino-Amplifier is the double-channel audio power amplifier module. |
Feature
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Specifications
DocumentEagle PCB 文件:Microduino-LM4863.zip Main Component
Development
Arduino library and supported package
How to use the library
Low-power shutdown of external control
ApplicationProgram Download
The Audio experiment using Core and SD
The process of making an audio file
Pictures
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