一般这样的裸板有个专业名称统一叫做 PCBA (PCB+A,Printed Circuit Board +Assembly),PCB是印刷电路板,PCBA是组装完成后的PCB组件。Assembly是组装的意思。 PCB是电子产品的地基,在这个地基上铺设管道,盖房子(焊接上电子元器件)。 PCB 3D演示图:PCB 2D预览图:PCB 设计图:PCB是在一块绝缘材料上,粘上铜皮
the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.
The first circuit that I want to present, is constructed using the integrated circuit LM317, which is a variable voltage regulator, but in this case we will use it as a current regulator. The circuit shown here is quite simple to understand. Between Vout and ADJ is present a reference vol...
You can supply power to board through the MicroUSB connector or to power pinheaders. The voltage regulator (LDO) can deal with incoming voltage from 6V to 9V (peack 18V) DC. Output current for 5V - about 800mA, for 3.3V - about 800mA (Please note that the higher the input voltage th...
I’m going to build an Arduino ATmega1284P circuit on a breadboard, burn a bootloader, and upload sketches to it, all using the Arduino 1.0 IDE. This will all go better if you have done it once first with a regular ATmega328P. Doing these things on that chip is well-documented, and...
3.3V voltage regulator circuit: The 3.3V of the LDO regulated output is the level conversion chip and the Micro SD card. Level shifting circuit: The signal to the direction of the Micro SD card is converted to 3.3V, and the MISO signal of the MicroSD card to the control interface is ...
Get the Fritzing code for that circuit imagehere. This is what the circuit looks like when built. I used an RJ11 splitter to attach both the ME-ARC and my arduino at the same time. The splitter was connected to the back of the ME-ARC. The RJ11 cable from the inverter was plugged in...
First we need 3.3V power supply for ESP8266. Good choice for regulator is AMS1117 3.3V. Simple circuit is shown below. Be sure to use big enough capacitor. ESP8266 VCC andCH_PHD are connected to 3.3V powersupply. AMS1117 3.3V power supply. ...
You can also bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header using Arduino ISP or similar; see these instructions for details. The ATmega16U2 (or 8U2 in the rev1 and rev2 boards) firmware source code is available in the Arduino re...
3. Power supply 4.5V~5.5V, onboard 3.3V voltage regulator circuit 4. Communication interface is standard SPI interface 5. 4 M2 screw positioning holes for easy installation The interface is shown in the figure: Control interface: a total of 6 pins (GND, VCC, MISO, MOSI, SCK, CS), GND...