![]() ![]() Here's a photo of the Arduino Mini connected to an Arduino NG. You can use a USBSerial connector wired up in a similar fashion :Ĭonnecting the Arduino Mini and a regular Arduino If it gives you problems, you can remove it, and press reset every time. #Arduino micro pinout serialThis enables auto-reset when the serial port is opened, meaning you don't have to press the reset button every time you upload new code. The 0.1uF capacitor from the reset pin is connected to the RTS pin on the mini USB adaptor. You can see power and ground from the USB are run to the rails of the breadboard so it's convenient for the other components on the board. The circuit shown here is the basic setup for an Arduino mini connected to a USB-to-serial converter. Connecting the Arduino Mini and Mini USB Adapter You have a few options for connecting the board: the Mini USB Adapter, a regular Arduino board, or your own power supply and USB/Serial adapter. When using another pin, you will need an external resistor. Pin 13 has a 1 KB resistor on it, so you can connect an LED to it directly between it and ground. While not technically necessary, connecting an LED to the Arduino Mini makes it easier to check if it's working. If you leave the reset pin unconnected, the Arduino Mini will reset randomly.Īn LED. You can wire it to a pushbutton, or connect it to +5V to prevent the Arduino Mini from resetting (except when it loses power). Whenever this pin is connected to ground, the Arduino Mini resets. These pins are used both for uploading new sketches to the board and communicating with a computer or other device. One of the ground pins on the Arduino Mini must be connected to ground of the power source. a 9 volt battery) connected to the +9V pin of the Arduino Mini. from the +5V pin of the Mini USB Adapter or an Arduino NG) connected to the +5V pin of the Arduino Mini. This can be a regulated +5V power source (e.g. To use the Arduino Mini, you need to connect: Mini 04 and 05 pinout (the ground on the left has moved down one pin) ![]() Mini 03 pinout (compatible with earlier revisions) Here's a diagram of the pin layout of the Arduino Mini: You can't remove the ATmega328P, so if you kill it, you need a new Mini. Two of these unconnected pins are also used by the Wire library (I2C), meaning that its use will require soldering as well.Īlso, the Arduino Mini is more fragile and easy to break than a regular Arduino board.ĭon't connect more than 9 volts to the +9V pin or reverse the power and ground pins of your power supply, or you might kill the ATmega328P on the Arduino Mini. Four of these, however, are not connected to the legs that come on the Arduino Mini, requiring you to solder wires to their holes to use them.
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