Minutes20100925¶

BOMFly¶

Unclear whether what receiver we designed for

• Vishay TSOP1138
• Vishay TSOP1238
• Vishay TSOP4838

All are 38Khz receivers with noise suppression, seem to differ only in power requirements and directivity. All suggest use of the TSAL6200 IR Emitter.

Decisions

Vishay TSOP1138: doesn't fit on robot, too large, lowest power consumption
Vishay TSOP1238: good size, not normally stocked
Vishay TSOP4838 - good size, more cycles/burst (length?), but lower bursts per second, in stock

WINNER: Vishay TSOP4838 IR Receiver

Scoutfly¶

• RA Headers along back of board -- might not have clearance for RA, need to use straight
  • Along back of board, 1.08" vertical clearance, should be plenty for a typical cgrid 0.1" connector
  • FFC should be fine

• Grounded Screw Holes
  • .116 for drill hole
  • .179 for screw head
  • .250 for ring terminal (including clearance/tolerance)
  • changes
    • bottom left: move orb right
    • bottom right: move orb left
    • top left: don't worry about battery header
    • top right: extend ground plane

• change resistor and capacitor values for BOM detectors to 100 ohm, 0.1 uF