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• ADX Core V0 Design Freeze and PCBA Order Placed

  Masahiro Furukawa • 04/30/2026 at 15:16 • 0 comments

  Progress Report: ADX Core V0 Design Freeze and PCBA Order Placed

  The design phase for the ADX Core V0 is officially complete. I have finalized the schematics and PCB layout, and the project has moved into the manufacturing stage. The PCBA (Printed Circuit Board Assembly) order has been placed with JLCPCB.

  Status Update

  • Schematics: Completed
  • PCB Layout: Completed
  • Manufacturing: In progress (Ordered via JLCPCB PCBA service)
  • Target Grade: Industrial / Robust Control

  Project Resources & Documentation

  All design files, fabrication data (Gerbers, BOM, CPL), and detailed development history are available on GitHub:

  Repository:

• https://github.com/Masafuro/ADX/

  Note: The repository contains documentation and commit messages in a mix of English and Japanese.

  Hardware Specifications

  The ADX Core V0 is designed as an "Arduino-like" industrial control board. It introduces a new, standardized industrial form factor—inspired by the ATX philosophy—aimed at creating an ecosystem where enclosures and components are easily interchangeable and professional.

  1. Performance Specifications

  Item	Specification	Notes
  MCU	Microchip ATtiny1616-MNR	8-bit AVR® megaAVR 0-series
  Clock Speed	20 MHz (16 MHz recommended)	Internal clock
  Logic Voltage	5 V
  Memory	Flash 16 KB / SRAM 2 KB / EEPROM 256 B
  Operating Temp	-40°C to +105°C	Industrial grade components

  2. Power & Protection

  Item	Specification	Notes
  Nominal Input	DC 12 V / 24 V / 48 V systems
  Input Range	DC 7.0 V to 48.0 V
  Protection	SMD Chip Fuse / Reverse Polarity
  Surge Protection	TVS Diodes	Mounted on power input
  Connection	2-pin Push-in Terminal	Pluggable with lock lever

  3. Communication & Interface

  Item	Specification	Notes
  Protocol	RS-485 x 1 channel
  Protection	TVS Diodes	A / B line protection
  Programming	UPDI	3-pin socket (UPDI, VDD, GND)

  4. GPIO Pin Assignment

  Connector: 2×10 pin Locked IDC Box Header (Right Angle)

  The layout utilizes multiple GND and VDD pins to ensure signal integrity and stable wiring in industrial environments.

  Pin	Signal	Notes	Pin	Signal	Notes
  1	VDD	5V Out	2	GND	Ground
  3	PC3	GPIO	4	PC2	GPIO
  5	PC1	GPIO	6	PC0	GPIO
  7	GND	Ground	8	PB0	GPIO
  9	PB1	GPIO	10	PB2	GPIO
  11	PB3	GPIO	12	GND	Ground
  13	PB4	GPIO	14	PB5	GPIO
  15	GND	Ground	16	PA7	GPIO
  17	PA6	GPIO	18	PA5	GPIO
  19	GND	Ground	20	VDD	5V Out

  5. Mechanical Specifications

  • Dimensions: 85.0 mm × 60.0 mm
  • Mounting: 4 x M3 screw holes (corners)
  • Features: 8.0 mm washer clearance, C3 chamfered edges.

  Next Steps

  Once the boards arrive from the fab, I will proceed with:

  1. Power rail verification: Testing stability with 24V and 48V inputs.
  2. Firmware upload: Initializing the ATtiny1616 via UPDI.
  3. Stress testing: RS-485 communication reliability in high-noise environments.