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High Quality Promotion Fashion TWS Bluetooth Module Power Amplifier Pcba 2 * 5W Audio Player Board |
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The price includes 2pcs module
This product is a 5.0 Bluetooth TWS pair box function (two modules); the voltage is 5V / current is 2a, the power supply is processed by secondary development of peripheral hardware, the maximum power can be configured to 5W, and the Bluetooth device name is ymx-868bt
Power supply: DC voltage (3.7-5v), current should be more than 1.5a-2a;
USB is the charging input port; 5V in can be charged from here; the red light is on when charging, but the red light is not on when fully charged). Please choose the lithium battery with protection board; please choose the original manufacturer for the charger, Shanzhai not only can't keep up with the current, but also can't keep constant current, which is easy to damage the battery and board. Pay attention!!
If the TWS function is used, two Bluetooth modules must be used; when the TWS is connected to one board, it is mono; when the TWS is disconnected, it is stereo
Operation method: TWS: when the Bluetooth module is powered on, there will be a "beep" sound; at this time, the automatic pairing connection (after the connection is successful, there will be a "beep" sound, at the same time, one board will flash regularly / the other board LED will be on for a long time. , two PCBA Bluetooth modules must be paired and connected. This function can be operated only when it is turned on. After scanning and pairing, it will be connected automatically
About the main frame machine: two PCBA Bluetooth modules are used at the same time. If the main frame machine (the blue light flashes regularly after pairing connection is the main frame machine, and the blue light is on for a long time is the auxiliary frame machine) is disconnected, the two PCBA Bluetooth modules will be disconnected at the same time. After connecting with the mobile phone for one time, it is the host by default.
Bluetooth connection: the mobile phone turns on the Bluetooth detectability of the mobile phone from the setting menu, so that the mobile phone can be detected by the device, and then goes to the Bluetooth menu - search device or paired device. After searching the "touch pairing" of ymx-868bt, you can also hear the "prompt tone" to complete the pairing;
Note: if it is not a smart phone (Android system), you need to enter the password - 0000; the Bluetooth device name of the product is ymx-868bt
Selection requirements:
Power requirements: DC voltage 3.7v-5v, voltage not higher than 5V; current 1.5a-2a; (special reminder: if using 3.7V lithium battery, please ensure that the lithium battery and discharge can reach 1.5A, some lithium batteries have voltage, but the current is unstable or can not meet the requirements, please use with caution; otherwise, it will always restart or the sound quality is not good, broken / distorted and other adverse phenomena)
Horn requirements:
Horn: select 4 Ω / 5W full frequency horn (special reminder: if using 3.7V lithium battery, please ensure that the lithium battery and discharge can reach 1.5A, some lithium batteries have voltage but the current is unstable or can not meet the requirements, please use with caution; lithium battery with protection board; horn with 4 Ω / 3W)
Special attention:
1) Bat + is connected to the positive pole dc3.7v to 5V +, GNT - is connected to the negative pole;
2) The working voltage of lithium battery is 3.7V, or the DC of regulated power supply is 4.5-5v, and the current is 600-700ma when one horn is connected; about 1.5-2a when two horns are connected. The lithium powered horn is equipped with 4 Ω 3W + 3W, the regulated power 5V horn is equipped with 4 Ω 5W + 5W. If the current is not enough, there will be some bad phenomena, such as skipping or Bluetooth instability, main board restart all the time or poor sound quality / broken sound / distortion (if there is such a problem, please check your power supply); the voltage should not be higher than 5V, otherwise the main chip, power amplifier IC and related components will be damaged, please pay attention
3) Horn wiring: white 2p seat SP - / SP + from bottom to top, l-o - / l-o + connected to horn 1; white 2p seat SP - / SP + from bottom to top, R-O - / R-O + connected to horn 2