Product name: 5A DC step-down CNC moduleInput voltage: DC 6.5-36V (the input voltage is lower than 6.5V, the current accuracy is not accurate, and the LCD display is abnormal when it is lower than 5.5V)Output voltage: DC 1.2-32VConversion efficiency: about 94%Working current: about 30mA
Power supply: 2.1 interface DC 8~25V power supplyChannel: 2*50w dual channel (stereo)Audio source input: Bluetooth connection stereo input, using CSR8633 Bluetooth chip, Bluetooth V4.0Output impedance: 8 ohms (can drive 4, 6, 8, 16 ohm impedance speakers)Output power: adding the front-end NE5532 output power is sufficientDIP switch: It is more convenient to directly adjust the gain of the power amplifier of the subsequent stage, and it is better to push the loudspeaker with larger damping
Product name: Bluetooth audio power amplifier moduleProduct model: HW-406Working voltage: DC3.7~5VOutput power: 5W*2Output load: 4Ω5W speaker
1.ESP8266 ESP12F WIFI模组2.物联网开发板3.机智云APP（客户端）控制4.RGB LED5.光敏电阻6.CH340串口芯片
主控芯片：L298N工作模式：H桥驱动（双路）逻辑电压：5V逻辑电流：0~36mA驱动电压：5~35V（建议最大使用不超过24V），如需要板内取电，则供电范围7V~35V（建议最大使用不超过24V）驱动电流：2A(Max单桥)
供电方式：1.锂电池18650 3.7V 2.Micro USB 接口供电：5V最大工作电流：2A工作温度：0~85℃
1. 输入电压：DC3.2V-35V；2. 输出电压：DC1.25V-30V；3. 输出电流：最大3A；4. 转换效率：最大92%； 5.带红色电源指示灯
1.12个数字输入/输出端口D2-D13。2.8个模拟输入端口A0-A7。3. 1对TTL电平串口收发端口RX/TX。4. 6个PWM端口，D3, D5, D6, D9, D10, D11。5. 采用Atmel Atmega328P-AU单片机。6. 支持USB下载及供电。7. 支持外接3.3V-12V直流电源供电。
Product model: HW-818Charging Voltage: DC 16.8-17.8VContinuous discharge current: maximum 40A (if heat dissipation environment is not good, please reduce the use of load current)Continuous charging current: maximum 20AProduct size: 45*60*4mmApplicable selection: suitable for lithium batteries with nominal voltage of 3.7V and charge of 4.2V(Including 18650, 26650, polymer lithium batteries) with electric drill below 170W