Feature summary

• 3" x 4" board
• High-quality, double-sided PCB with soldermask on both sides
• Footprints for SOIC-package ATTINY26 microcontroller and DPAK-package voltage regulator
• Holds crystal and two capacitors or 3-pin ceramic resonator with built-in capacitors
• DB9 connector pins brought out so that it can be used for non-RS-232 purposes
• Prototyping area
  • 29×25-hole grid with standard 0.1" spacing (16 holes missing in bottom corners for mounting holes)
  • 0.042" -diameter plated-through holes
  • Five bus strips
  • Pads connected in groups of two or three
  • Silkscreen clearly indicated connections
  • Solder mask on both sides
  • Four 1/8" mounting holes