BLF20DD Version 1.0

by Mattaus.

2 layer board of 0.80x0.80 inches (20.27x20.27 mm).
Shared on July 9th, 2014 10:00.

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BLF17DD Version 1.0

by Mattaus.

2 layer board of 0.68x0.68 inches (17.27x17.27 mm).
Shared on July 9th, 2014 09:58.

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HD44780 Serial LCD Backpack

by serisman.

2 layer board of 1.60x0.45 inches (40.74x11.53 mm).
Shared on July 9th, 2014 05:19.

1-wire, 4-bit, using 74HC595 Shift Register

$1.20 each ($3.60 for 3)

Use the LiquidCrystal_SR1W code from the ‘New LiquidCrystal’ Arduino library:

Component: [Sizes] Values (description)

  • U1: [SOIC-16N] 74HC595 (the shift register)
  • VR1: [3296W, 3362P (or similar)] 10k (for contrast control)
  • C1: [0805] 0.1uF (decoupling capacitor)
  • C2,C3: [0805] 2.2nF (part of the 1-wire input circuit)
  • D1: [SOD80 (~1206)] LL4148 (or similar) (part of the 1-wire input circuit)
  • Q1: [SOT-23] NPN (~MMBT2222A or similar) or N-Channel (~2N7002 or similar) (used to allow software control of the backlight LED)
  • R1: [0805] 1k-10k (used to limit the current through the base/gate of Q1)
  • R2,R3: [0805] 1.5k (part of the 1-wire input circuit)
  • R4: [1206] ~100 ohm (used to limit the current through the backlight LED)

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FYC Relay Breakout 120

by goseese.

2 layer board of 1.10x1.50 inches (28.04x38.20 mm).
Shared on July 9th, 2014 01:38.

FYC relay board with all connections broken out to headers

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GPS_LOGGER_V1

by Bram2202.

2 layer board of 3.44x1.25 inches (87.30x31.75 mm).
Shared on July 8th, 2014 20:19.

Arduino GPS logger V1

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