LCD Module 16×2 (Green Backlight) for Arduino

Note: From February 2020 onwards, the module comes with a logic low circuit.

The Relay breakout board is a convenient board to be used with 5V microcontrollers such as SK40C, SK28A, Arduino, SKds40A, SK18B. You can easily use 5V signal to control the relay. Three inputs:

• VCC = 5V is needed
• GND = Common Ground, 0V
• IN = Control signal need to be 5V 0V to activate the Relay (Active Low)

The relay terminals (COM, NO, and NC) are brought out using a 3-way screw terminal. On-board relay is rated at 10A. It can be used in many applications: controlling high voltage, high current loads such as motor, solenoid valves, lamps, and AC load. It also comes with 2 LEDs to indicate the status power (VCC) and the status of the relay.

Note: This is an active-high active-low device, which means logic high (5V) low (0V) at pin IN will trigger the relay.

Atmel’s ATMega328P 8-Bit Processor in 28 pin DIP package. It comes with 32K of program space. 23 I/O lines, 6 of which are channels for the 10-bit ADC. Runs up to 20MHz with external crystal. Package can be programmed in circuit. 1.8V to 5V operating voltage! The famous Arduino Deumilanove, and Arduino UNO is using this ATMega microcontroller. Anyhow, this microcontroller is fresh new without any bootloader.

Good news! Start from August 2012, this microcontroller is pre-loaded with Optiboot bootloader (Uno 16MHz). This means you can use Arduino code in your own project without using an actual Arduino Board. No programmer is needed anymore but you still need UC00A and basic circuit. Please select Arduino Uno Board in the Arduino IDE. We are using this microcontroller in our Breadboard Friendly Arduino (BBFuino). Therefore, you can refer to BBFuino’s schematic and tutorial for more information.