產品說明11
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Breakout for LinkIt Smart 7688 聯發科擴展板(103100022)
*此價只有賣底板喔!!
Description
Breakout for LinkItTM Smart 7688 v2.0, succeeding the first version (check here), now can better support the audio recording function. As it reserves the original pins of LinkItTM Smart 7688, the board also integrates several frequently-used ports such as an Ethernet port, a 3.5mm audio port, and a Host port (USB Type-A Connector) for more peripherals, and along with 3 Grove ports to provide 2 UART and 1 I2C interfaces for the Grove-based electronics, it saves you a lot of work doing wirings in your smart IoT projects, makes your rapid prototyping even faster.
About LinkItTM Smart 7688, LinkIt Smart 7688 (a compact controller board) is an open development board, based on the OpenWrt Linux distribution, MT7688. The board is designed especially to enable the prototyping of Rich Application IoT devices for smart house.
Application Ideas
- IoT/Gateway Device.
- Robotics
- Smart multimedia devices
- Smart Audio
- Teaching and learning
Features
- 3.5mm headphone Jack(with Mic) for multimedia
- 1 x Ethernet to connect internet
- 1 x USB 2.0 for more peripherals
- Grove interface: 2 x UART, 1 x I2C
- Stereo and AUX are supported
- Audio Recording supported (New)
Specification
- Input voltage: 5.0V (With USB Power port)
- Operating voltage: 3.3V
- Max Operating current: 800mA
- Min Operating current: 2mA
- 1W output for each stereo port
- Chip: WM8960
- Analog pin input voltage(on WM8960 ): 2.7~3.6V(Analog pin input voltage on WM8960 for stereo can reach 5.5V at Max.)
- Digital pin input voltage(on WM8960 ): 1.71~3.6V
DEMO
Demo –Smart WiFi Audio
It is a WiFi Audio which allows your mobile phone to connect to its WiFi and play the music in your phone. If you connect the Linklt Smart 7688 to your Router, the Audio will show the IP on the Grove RGB Backlight LCD, and also the music names.
Learn more at our Recipe.
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Version Tracker
| Product reversion | Release date | Support status | Notes |
| Breakout for LinkIt Smart 7688(v1.0) | November 2015 | Supported | None |
| Version 2.0 | April 2016 | Supported | New features: - Support recording functionality
- For 3.5 mm phone connector (audio jack), it supports the protocol OMTP and CTIA. You can use either protocol by switching a switch. About how to switch protocol, we will describe it later.
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Hardware Overview
- To switch phone connector protocol between OMTP and CTIA
- In preceded figure, you can notice that there are six pins and two jumper caps on bottom-right corner. These pins are used to switch phone connector protocol. As you set tiny jumper(both) to left-four pin, protocol OMTP is used. As you set tiny jumper(both) to right-four pin (as preceded figure shows), protocol CTIA is used. As following figures show:
- Note that to use the recording functionality, you need to update on-board firmware to Breakout for LinkIt Smart 7688 firmware(above version v0.9.2).
- Note that we recommend you use external storage device, because the Write/Read speed of on-board flash memory is limited
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(正面差異比較,放一起看比較清楚哪裡不一樣喔!!!)
The Linklt Smart 7688 development platform offers two developments boards:
Linklt Smart 7688 : MPU only. Powered by Media Tek MT7688.
Linklt Smart 7688 Duo (雙核) : MPU and MCU. Powered by Media Tek MT7688 and ATmega 32U4.
- Grove interface
- Connect rich Grove interfaced functional modules. With this kind of ports, you never need jumper wire or soldering work, and you can make more powerful applications with those functional modules.
