RS485 Shield For Arduino Uno Schematic and PCB Layout
PCB & Schematic PDF Download
2 Channel Relay Shield for Arduino UNO Circuit and PCB layout
2 Channel Relay shield for Arduino UNO can be used in several applications like remote control, on/off AC or Dc load and any circuits which required isolated high current and high voltage. Relay 1 connected to Digital pin D2 and Relay 2 can be controlled through D12 of Arduino PIN. Both relay has optocoupler in input for isolation which protect Arduino from any EMI noise and complete isolation between high volt/current at relay outputs. Relay shield required separate 12V DC. Two LED indicate the Relay operations. J1,J2 provided In case single supply for relay and Arduino required.
- Input: 12 VDC @ 84 mA
- D2 and D12 Arduino connected to Relay inputs
- Solder PCB Jumper J1 and J2 if Shield and Arduino need common supply
- High TTL Signal Required to Trigger the Relay
- Output: Two SPDT relay
- Relay specification: 5 A @ 230 VAC
- Trigger level : 2 to 12 VDC
- Header connector for connecting power and trigger voltage
- LED on each channel indicates relay status
- Power Battery Terminal (PBT) for easy relay output connection
17 Channel Optically Isolated I/O Shield for Arduino Uno
The shield enables you to interface many things to Arduino Uno , all I/O are optically isolated, The shield consist 8 Channel low speed outputs which can be used for on/off applications. 3 Channel high speed outputs frequency up to 10 MHz using 6N137. 4 Channel slow inputs using PC817 opto-coupler. One high speed input frequency up to 10 MHz using 6N137, and one analog voltage input using LOC111 IC. Board provided with multi option isolated i/o line to integrate multiple sensors and other things.
- Supply 5V DC
- 8 Low Speed Outputs for On/Off Slow Operations Using PC817
- Slow Outputs Connected to Digital Pins D2,D3,D4,D5,D6,D7,D12,D13
- 3 Channel High Speed Outputs Frequency Upto 10Mhz Using 6N137 Optocoupler
- 3 High Speed Outputs Connected to PWM Pins D9,D10,D11
- 4 Channel Low Speed Inputs Connected to Analog Pins A1,A2,A3,A4 (PC817)
- 1 Channel High Speed Input Connected to Digital Pin D8 Frequency Up to 10Mhz
- 1 Channel Analog Voltage Input 0 To 5V
3 Digit 2.3 inch 7 segments SPI protocol Display module using 74HC595 project will display large size 7 segment 3 digit numbers. 2.3 Inch height, which can be visible over large distance. More digit can be connected serially to each other easily trough connector.
This circuit is a 3 digit seven segment big display using 74HC595 shift register for easy control by micro-controller. useful circuit to make Timer, stop watch, Score Board, Token No, Vehicle counter at parking and many other applications.
- Supply 12V DC For Display
- Supply 5V For logic 75HC595
- Inputs data TTL signals
DOWNLOAD PDF PCB LAYOUT
DOWNLOAD PDF SCHEMATIC
This single development board supports dozens of the general purpose PIC18 families.
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6 Digit serial display project has been designed around CAT4016 IC from ON semi. The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V (for 2 to 100 mA LED current) allows for more power efficient designs.
A high-speed 4-wire serial interface of up to 25 MHz clock frequency controls each individual channel using a shift register and latch configuration. A serial output data pin (SOUT) allows multiple devices to be cascaded and programmed via one serial interface. The device also includes a blanking control pin (BLANK) that can be used to disable all channels independently of the interface.
Thermal shutdown protection is incorporated in the device to disable the LED outputs if the die temperature exceeds a set limit.
- 6 Digit 1 inch 7Segment Display
- Supply Input 3V to 5.5V
- Serial interface up to 25 MHz clock frequency
- LED current 20mA (Range from 2 mA to 100)
- LED current set by external RSET resistor
- 300 mV LED dropout at 30 mA
- Thermal shutdown protection
- R1,R2,R3 Current Set Resistors
LED Current Set Formula
- LED Current = 50X1.2/Rset ,
- Rset = R1, R2, R3
CN1 : Connector
- PIN1 : 3V TO 5.5V (VCC)
- PIN2 : SIN (DI) Serial Data Input
- PIN3 : CLK (CL) Serial Clock Input
- PIN4 : Latch (LT) Latch Data Input
- PIN5 : Blank (BK) LED Channel enable disable input
- PIN6 : GND
CN2 : Serial Data Output
- PIN1 : 3V TO 5.5V (VCC)
- PIN2 : Sout (Do) Serial Data output
- PIN3 : CLK (CL) Serial Clock output
- PIN4 : Latch (LT) Latch Data output
- PIN5 : Blank (BK) LED Channel enable disable
- PIN6 : GND
The module based on DS1307, The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I²C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.
- Supply 5V DC
- Completely Manages All Timekeeping Functions
- Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
- 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes
- Programmable Square-Wave Output Signal
- Simple Serial Port Interfaces to Most Microcontrollers
- I2C Serial Interface
- Low Power Operation Extends Battery Backup Run Time
- Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running
- Automatic Power-Fail Detect and Switch Circuitry
The Module is based on The MCP2200, which is a USB-to-UART serial converter which enables USB connectivity in application that have a UART interface. The device reduces external components by integrating the USB termination resistors. The MCP2200 also has 256-bytes of integrated user EEPROM. The MCP2200 has eight general purpose input / output pins. Four of the pins have alternate functions to indicate USB and communication status.
- Supply 3- 5V DC
- On Board TX & RX LED
- USB activity LED outputs (TxLED and RxLED)
- Mini USB Interface
- 6 + 6 PIN Header Connector for I/O and RX-TX Signals
- UART signal polarity option General Purpose Input/output (GPIO) Pins
- Eight (8) general purpose I/O pins
- Supports Full-Speed USB (12 Mb/s)
- Implements USB Protocol Composite Device CDC Device (communications and control)
- Class 02h – CDC: USB-to-UART communications and I/O control
- Class 03h – HID: I/O control, EEPROM access, and initial configuration
- 128 byte buffer to handle data throughput at any UART baud rate
- 64 byte transmit
- 64 byte receive
- Fully configurable VID and PID assignments and string descriptors
- Bus Powered or self-powered USB Driver and Software Support
- Royalty-free drivers for Virtual Com Port (VCP)
- Windows XP (SP2 and later)/Vista/7
- Configuration utility for initial configuration
- Universal Asynchronous Receiver/Transmitter (UART)
- Support baud rates: 300 – 1000k (baud)
- Hardware flow control
- 256 bytes of user EEPROM
- SSPND output pin
- ULOAD output pin (indicates if requested current was allowed).
- Oscillator input: 12 MHz
The PIC 18 PIN (DIP) Development / Evaluations Board demonstrates the capabilities of Microchip’s 8-bit microcontrollers, specifically, 18 Pin PIC16F1847. It can be used as a standalone demonstration board with a programmed part. With this board you can develop and prototype with all Microchip’s 18 PIN PIC microcontrollers. The board has a Reset switch and status LEDs. On board 3.3 V and 5V DC regulators allows using 3V and 5V PICs, This board support both 3.3V low power and normal 5V operation. All I/O Pins out with 2xfemale headers
Development Board Features:
- 16 I/O Ports
- Onboard 5V and 3.3V Supply
- 3.3V or 5V Supply selection by jumper
- Dual line I/O
- On board Power Indication
- On-board ICSP Port (PICKIT2 Standard Programming Port)
- Well labeled legends
- All outputs has provision for LEDs for output indication
- Replaceable PIC Microcontroller,
- Crystal and capacitor mounting under the PCB
PIC16F1847 Micro-Controller Specifications:
- Enhanced Mid-range Core with 49 Instruction, 16 Stack Levels
- Flash Program Memory with self read/write capability
- Internal 32MHz oscillator
- Integrated Capacitive mTouch Sensing Module
- Data Signal Modulator Module
- MI2C, SPI, EUSART w/auto baud
- 2 ECCP & 2 CCP (Enhanced/Capture Compare PWM)
- Comparators with selectable Voltage Reference
- 12 Channel 10b ADC with Voltage Reference
- 25mA Source/Sink current I/O
- Four 8-bit Timers (TMR0/TMR2/TMR4/TMR6)
- One 16-bit Timer (TMR1)
- Extended Watchdog Timer (EWDT)
- Enhanced Power-On/Off-Reset
- Brown-Out Reset (BOR)
- In Circuit Serial Programming (ICSP)
- On Board In-Circuit Debug
- Wide Operating Voltage (1.8V – 5.5V)
- Low Power PIC16LF182x/4x variants (1.8V – 3.6V)
- Standby Current (PIC16LF1847): 30 nA @ 1.8V, typical
- Program Memory Type Flash
- Program Memory (KB) 14
- CPU Speed (MIPS) 8
- RAM Bytes 1,024
- Data EEPROM (bytes) 256
- Digital Communication Peripherals 1-UART, 1-A/E/USART, 2-SPI, 2-I2C2-MSSP(SPI/I2C)
- Capture/Compare/PWM Peripherals 2 CCP, 2 ECCP
- Timers’ 4 x 8-bit, 1 x 16-bit
- ADC 12 ch, 10-bit
- Comparators 2
- Temperature Range (C) -40 to 125
- Operating Voltage Range (V) 1.8 to 5.5
- Pin Count 18
- XLP Yes
- Cap Touch Channels 12
The PIC 40 / 28 PIN (DIP) Development / Evaluations board demonstrates the capabilities of Microchips 8-bit microcontrollers, specifically, 28- and 40-pin PIC16FXXX, PIC16F1XXX, and PIC18 devices. It can be used as a standalone demonstration board with a programmed part. With this board you can develop and prototype with all Microchip’s 40 & 28 PIN PIC microcontrollers which doesnt require crystals (External Oscillator). On board connector for UART (RX-TX) allows an easy connection with embedded hardware. The board has a Reset switch and status LEDs.
On board 3.3 V and 5V DC converter allows using 3V and 5V PICS, This board support both 3.3V low power and normal 5V operation. All I/O Pins out with female header and male header connectors.
- Power Supply 7V to 36V DC @ 3 Amps
- 40 PIN PIC18F46K22 & 28PIN PIC18F26K22 DIP Micro-Controllers
- The PIC development platform is exclusively designed to offer full experimenting flexibility to a developer or application engineer for the enhanced range of 28/40 pin 8 bit PIC Microcontroller.
- Industrial standard 3A Switching regulator brings in safe operation of the board for all type of input supply without overheating.
- Dual supply (5.0V and 3.3V @ 3A) takes care of all the supply needs of your IO devices and operating voltage of the board. Independent Supply of 3.3V, 5V and Input VDD (Input Supply) is always available at header pins.
- With a single Jumper you can select the operating voltage of the MCU between 5.0 and 3.3 V
- PICKIT2 standard ICSP interface available for ease of programming.
- Separate IO pins for the UART interfacing available for Serial interfacing.
- A LED circuit on every IO pin of the MICRO to give you an easy visual status of the pins. Optional and not provided along with the kit.
- Separate PWR ON indicator for each of the 2 supply (3.3V / 5V) available.
- Dual Header connector , Male/Female available for ease of interfacing with the outside world
- RESET switch to reset the onboard MCU.
- Supply reverse input diode for protection at both 3.3V and 5V DC-DC Converter inputs