seeed studio Seeeduino Lotus v1.0 User manual

Seeeduino Lotus v1.0
Introduction
Seeeduino Lotus is an ATMEGA328 Microcontroller development board. It is a combination of
Seeeduino and Base Shield. It used Atmel ATMEGA328P-MU and CH340. ATMEGA328P-MU
is a high performance, low power AVR 8-Bit Microcontroller. CH340 is an USB bus converter
chip that can realize an USB to serial interface. Seeeduino Lotus has 14 digital input/output (6 of
which can output PWM) and 7 analog input/output, a micro USB connection, an ICSP header, 12
Grove connections, a reset button.
Specification
Microcontroller: ATmega328P-MU
Operating Voltage: 5V
Digital I/O Pins:14
PWM Channels:6
Analog Input Channels:7
DC Current per I/O Pin: 40 mA
Flash Memory: 32 KB (ATmega328P-MU)
RAM: 2 KB (ATmega328P-MU)
EEPROM:1 KB (ATmega328P-MU)
Clock Speed:16 MHz

Interface Function
①：Micro USB
②：Reset button
③：Analog Ports: Analog sensors can return readings ranging from 0 to 1023.Compared
with digital sensors that only return 0 or 1, analog readings are more detailed and precise.
④：I2C Ports:I2C is a low-speed bus protocol that transfers data via two wire : SCL and
SDA . SCL is the clock line that synchronizes data transfer over the I2C bus, and SDA is
data line.
⑤：Digital Ports: Normally, they are used when reading a digital sensor that only
outputs 0 or 1,or turning on or off an actuator.
⑥：UART Port:we can control serial device by this port.
Driver Install
Seeeduino Lotus is used CH340 to download .It need to install driver.
Windows/Linux
Totally compatible with serial application program in computer endpoint Windows operation
system
1)You plug it to computer by USB Port.
2)Wait a minute,you can find it in Device Manager.
3)If you can not find the port,please download Driver from Here

Mac OS
Driver download: http://www.wch.cn/downloads.php?name=pro&proid=178
Usage
We will show how to used Seeeduino Lotus.
Hardware Installation
1）Part lists:Seeeduino Lotus v1.0、Grove - LCD RGB Backlight、Grove - I2C FM
Receiver、Grove - Button、Grove - Rotary Angle Sensor.
2）Hardware linking is very easy, Grove - LCD RGB Backligt and Grove - I2C FM
Receiver are I2C communication,Grove - Button is digital input,Grove - Rotary Angle
Sensor is analog input,so you can link it as show.

Software Part
1)You can download the demo code in github, click here.
2)If you don't know How to install Arduino Library,please click Here
3)Open the I2C_FM_RGB_LCD example sketch: File->Examples-
>Seeeduino_lotus_Usage->I2C_FM_RGB_LCD
4)You'll need to select the entry in the Tools > Board menu that corresponds to your
Arduino,You need to select Arduino Uno.

5) Select the serial device of the Arduino board from the Tools | Serial Port menu.

6）Now, simply click the "Upload" button in the environment. Wait a few seconds - If
the upload is successful, the message "Done uploading." will appear in the status bar.
Bug Report
The silk printed near the D5 Grove connector has an error. The D4,D5 should be D5,D6.
We will fix this error asap.

Resource
[Seeeduino Lotus Eagle file]
[Seeeduino Lotus bootloader]
[Seeeduino Lotus PDF file ]