Main Powerboard

by TreySch.
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2 layer board of 2.71x1.99 inches (68.86x50.57 mm).
Shared on May 10th, 2017 05:24.

For LED Wall Exhibit

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Electrolytic Capacitor ESR Tester

by Eric.
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2 layer board of 2.93x1.41 inches (74.45x35.71 mm).
Shared on May 10th, 2017 03:43.

Cost: $20.60 for three.

Description: This board tests the equivalent series resistance (ESR) of electrolytic capacitors and outputs 1 volt per ohm to a multimeter. The design is tested and working.

BOM cost is ~$13 for just the components to populate the board. Click for a Digi-Key shopping cart with those parts.

For cheaper trimmer potentiometers, click to search eBay for “3296W 1M” and “3296W 5k”, sorted by price.

Notes:

  1. R1 and D1 are optional power-on indication; the board will work without them.

  2. M1 is not obviously marked for pin 1 location. Place part with its conjoined legs on the left, with the board oriented as shown in the OSHPark rendering above.

Download: Click here for a .ZIP archive containing the schematic, DipTrace v3.0.0.1 CAD files and RS-274X Gerber files.

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ESP12-F Pogo

by CiR.
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2 layer board of 0.87x0.71 inches (22.10x18.11 mm).
Shared on May 10th, 2017 02:37.

Programmer/debugger for ESP12-F

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Single USB Charging Adapter

by Eric.
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2 layer board of 0.78x0.68 inches (19.89x17.17 mm).
Shared on May 10th, 2017 01:28.

Cost: $2.60 for three boards.

Description: Adapts a 5V supply into a single-port universal USB charger. For use with my 14V/28V to 5.1V 2.5A USB Power Supply board.

Bill of Materials: Click here for a Digi-Key shopping cart containing all necessary components.

  • Texas Instruments TPS2514A 1-port Dedicated Charging Port controller (SOT-23-6)
  • Samsung CL31B104KBCNNNC 0.1uF 50V X7R ceramic capacitor (1206)
  • Phoenix Contact 1985195 2.5mm-pitch 2-position wire-to-board spring terminal block
  • Amphenol MUSB-A111-30 rugged USB panel-mount connector

Download: Click here to download a .PDF schematic of this board.

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Matrix Breakout

by deshipu.
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2 layer board of 0.80x0.80 inches (20.42x20.37 mm).
Shared on May 9th, 2017 21:29.

A breakout for a mini 8x8 LED matrix.

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