ATmega32u4 IoT Board with On Board SMPS

OVERVIEW:

RDL's compact and reliable ATmega32u4 IoT Board with On Board SMPS.It can be used for variety of IoT industrial applications.

 

FEATURES:

• 12 Channel  (12 Channel Digital/Analog input Vdc (0-5V)).
• On board SD card socket.
• Support upto 8 GB FAT .
• On board USB programming option. 
• Operaing voltage 5V.
• 12 channel analog input Volatge range 0-5V.
• Xbee foot print for RF/WiFi communication.
• On board SMPS 5VDC/3W.
• 2 bit digial OPTO Isolated input using MCT-2E IC.
• RDL Bus:Easily connects to I2C/SPI/UART modules such as I2C DAC,4-20mA current loop transmitter,RTC etc.
• Compatible with Arduino IDE.

Technical Specification:

• Microconroller: ATmega32u4 
• Operating voltage: 5V
• Input Voltage(recommended): 7-12V
• Input voltage(limits):6-20V
• Analog input channels: 12
• DC current per I/O pin: 40mA
• DC current for 3.3V pin: 50mA
• Flash memory: 32KB (ATmega32u4) of which 4KB used for booloader
• SRAM: 2.5 KB (ATmega32u4)
• EEPROM: 1 KB (ATmega32u4)
• Clock speed: 16 MHz.

ESP8266 Features:

•  SDIO 2.0, SPI, UART
•  32-pin QFN package
•  Integrated RF switch, balun, 24dBm PA, DCXO, and PMU
•  Integrated RISC processor, on-chip memory and external memory interfaces
•  Integrated MAC/baseband processors
•  Quality of Service management
•  I2S interface for high fidelity audio applications
•  On-chip low-dropout linear regulators for all internal supplies
•  Proprietary spurious-free clock generation architecture
•  Integrated WEP, TKIP, AES, and WAPI engines.

BT24 Bluetooth Breakout Board: 
 Bluetooth features

• Bluetooth qualified module 
• Bluetooth v3.0
• Class 2 radio
• Range up to 60m LOS
• 400Kbps data throughput
• 128-bit encryption security  

Hardware configuration

• Cortex-M3 microprocessor up to 72MHz 
• 64K/128K/256K bytes Flash memory
• 8K/16K/48K bytes RAM memory
• UART, up to 921K baud
• SPI and I2C interfaces
• 13 general purpose I/O
• PCM audio interface
• 4 x12-bit A/D inputs 
• 1 LPO input.

Embedded software

•  Amp’edUP Bluetooth stack (SPP, IAP, A2DP, HID, HFP, OBEX)
•  Support Apple iOS/MFI Bluetooth devices
   abSerial, AT command set3
•  BlueGuard, data encryption software (Optional)
•  Mobile application software (Optional)

RTC Features:

• Real-Time Clock (RTC) 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, Nonvolatile (NV) RAM for Data Storage.
• I2C Serial Interface
• Automatic Power-Fail Detect and Switch Circuitry.
• Consumes Less than 500nA in Battery Backup Mode with Oscillator Running.
• 3 way of connectivity, Burgestick, FRC and custom cable soldering holes.
• High quality PCB FR4 Grade with FPT Certified. 

Application:

• Home automation. 
• Datalogging application.
• Open source PLC.
• Industrial applications.
• 4-20mA loop current based applications.
  

1. SD Card Socket
2. Xbee Foot Print
3. USB Programming Option.
4. Reset Switch
5. ICSP header
6. Digial OPTO Isolated Input.
7. AC Input
8. Hi-Link 5VDC/3W
9. Switch input
10. 5V and GND pins 
11. Analog Input channels
12. RDL Bus.

 Interfacing Boards:
Interfacing with 4-20mA current loop transmitter XTR116U:

 

Interfacing with 16 Input Output Expander MCP23017:

 Interfacing with I2C 12 Bit DAC MCP4725:

Interfacing with GSM SIM900A Modem:

Interfacing with Development Board:

Interfacing with Relay Board:

For More Schematic and Sample Codes: CLICK HERE