Integrated Circuits 50PCS Nano 3.0 Controller Compatible with CH340

• File Format: STEP
• Application: Auto and Motorcycle Accessory, Household Appliances, Furniture, Hardware, Machinery Accessory
• Printer Material: PLA
• Nozzle Number: 1
• Sku: 1005
• Place of Origin: China
• Model NO.: 1005
• MOQ: 5
• Color: Blue
• Delivery Time: 7days
• Support Customization: Yes
• Transport Package: ESD Bag
• Specification: PCB Module
• Trademark: CKMCU
• Origin: China
• HS Code: 85423221
• Production Capacity: 50000PCS/Year

Product Description

Return policy details

• Buyers can return item(s) for a refund within 7 days from the day the item(s) were received, and the buyer is to afford the return shipping cost. The item(s) must be returned in the same exact condition as once it was delivered.
• Buyers may return the item(s) for a refund if they are not as described or with quality issues within 7 days from the day the item(s) were received.The buyer is required to afford the return shipping cost, based on the condition of the item(s) received.

Description

SKU	1005
Place of Origin	China
Color	Blue
MOQ	5
Delivery time	7days
Support customization	yes

Schematic and Design
Nano 3.0 (ATmega328): schematic, Eagle files.

Nano 2.3 (ATmega168): manual (pdf), Eagle files. Note: since the free version of Eagle does not handle more than 2 layers, and
this version of the Nano is 4 layers, it is published here unrouted, so users can open and use it in the free version of Eagle.

Specifications:
MicrocontrollerAtmel ATmega168 or ATmega328Operating Voltage (logic level)5 VInput Voltage (recommended)7-12 VInput Voltage
(limits)6-20 VDigital I/O Pins14 (of which 6 provide PWM output)Analog Input Pins8DC Current per I/O Pin40 mAFlash Memory16 KB
(ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloaderSRAM1 KB (ATmega168) or 2 KB (ATmega328)EEPROM512 bytes
(ATmega168) or 1 KB (ATmega328)Clock Speed16 MHzDimensions0.73" x 1.70"
Power:
The Nano can be powered via the Mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external
power supply (pin 27). The power source is automatically selected to the highest voltage source.

The FTDI FT232RL chip on the Nano is only powered if the board is being powered over USB. As a result, when running on external
(non-USB) power, the 3.3V output (which is supplied by the FTDI chip) is not available and the RX and TX LEDs will flicker if
digital pins 0 or 1 are high.

Memory
The ATmega168 has 16 KB of flash memory for storing code (of which 2 KB is used for the bootloader); the ATmega328 has 32 KB,
(also with 2 KB used for the bootloader). The ATmega168 has 1 KB of SRAM and 512 bytes of EEPROM (which can be read and written
with the EEPROM library); the ATmega328 has 2 KB of SRAM and 1 KB of EEPROM.

Input and Output
Each of the 14 digital pins on the Nano can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead()
functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor
(disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:

* Serial: 0 (RX) and 1 (TX).Used to receive (RX) and transmit (TX) TTL serial data. These pins are connected to the corresponding
pins of the FTDI USB-to-TTL Serial chip.

* External Interrupts: 2 and 3.These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or
a change in value. See the attachInterrupt() function for details.

* PWM: 3, 5, 6, 9, 10, and 11.Provide 8-bit PWM output with the analogWrite() function.

* SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK).These pins support SPI communication, which, although provided by the underlying
hardware, is not currently included in the language.

* LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW,
it's off.


The Nano has 8 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). By default they measure
from ground to 5 volts, though is it possible to change the upper end of their range using the analogReference() function.
Additionally, some pins have specialized functionality:

* I2C: 4 (SDA) and 5 (SCL). Support I2C (TWI) communication using the Wire library (documentation on the Wiring website).


There are a couple of other pins on the board:

* AREF.Reference voltage for the analog inputs. Used with analogReference().

* Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on
the board.


See also the mapping between pins and ATmega168 ports.

Communication
The Nano has a number of facilities for communicating with a computer, another , or other microcontrollers. The ATmega168 and
ATmega328 provide UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). An FTDI FT232RL on the
board channels this serial communication over USB and the FTDI drivers (included with the software) provide a virtual com port to
software on the computer. The software includes a serial monitor which allows simple textual data to be sent to and from the
board. The RX and TX LEDs on the board will flash when data is being transmitted via the FTDI chip and USB connection to the
computer (but not for serial communication on pins 0 and 1).

A SoftwareSerial library allows for serial communication on any of the Nano's digital pins.

The ATmega168 and ATmega328 also support I2C (TWI) and SPI communication. The software includes a Wire library to simplify use of
the I2C bus; see the documentation for details. To use the SPI communication, please see the ATmega168 or ATmega328 datasheet.

Programming
The Nano can be programmed with the software (download). Select " Diecimila, Duemilanove, or Nano w/ ATmega168" or "Duemilanove or
Nano w/ ATmega328" from the Tools > Board menu (according to the microcontroller on your board). For details, see the reference
and tutorials.

The ATmega168 or ATmega328 on the Nano comes preburned with a bootloader that allows you to upload new code to it without the use
of an external hardware programmer. It communicates using the original STK500 protocol (reference, C header files).

You can also bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header; see
these instructions for details.

Automatic (Software) Reset
Rather then requiring a physical press of the reset button before an upload, the Nano is designed in a way that allows it to be
reset by software running on a connected computer. One of the hardware flow control lines (DTR) of the FT232RL is connected to the
reset line of the ATmega168 or ATmega328 via a 100 nanofarad capacitor. When this line is asserted (taken low), the reset line
drops long enough to reset the chip. The software uses this capability to allow you to upload code by simply pressing the upload
button in the environment. This means that the bootloader can have a shorter timeout, as the lowering of DTR can be
well-coordinated with the start of the upload.

This setup has other implications. When the Nano is connected to either a computer running Mac OS X or Linux, it resets each time
a connection is made to it from software (via USB). For the following half-second or so, the bootloader is running on the Nano.
While it is programmed to ignore malformed data (i.e. anything besides an upload of new code), it will intercept the first few
bytes of data sent to the board after a connection is opened. If a sketch running on the board receives one-time configuration or
other data when it first starts, make sure that the software with which it communicates waits a second after opening the
connection and before sending this data.

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FAQ

1.Are you manufacturer ?
Yes, We Are Manufacturer & Trading Company
2.How long is your delivery time?
Normally 3-5 working days after payment; Special requirement orders, delivery time is negotiable.
3.Do you accept OEM design?
Yes, we do. We can design according to your requirement, MOQ usually 500-1000.
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We accept Alibaba Trade Assuarce, T/T, PayPal, Western Union, Wechat, Alipay, in Cash (RMB or USD).
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We Can Ship the goods Via DHL, Fedex ,TNT, UPS ,Aramex ,EMS , China Post , By Sea And By Air.


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