![An electric ecosystem](../../assets/oshpark_logo-394b5d59990e1feb769d201a1bca154982ac9b9d165f54cb25f119d5d3262aee.png)
OSH Park
Shared projects
Arduino Mega Shield - AD+STP
by![](../../../gravatar.com/avatar/15e2e64d44f7f57995f2b701f28e1c03ea98.jpg?s=16)
2
layer board of
3.43x2.10
inches
(87.15x53.26
mm).
Shared on
September 15th, 2016 08:09.
PCB for Arduino Mega Development
Antenna switch.brd
by![](../../../gravatar.com/avatar/d8f909fe2679b26ce194c279412dc5e1ea98.jpg?s=16)
2
layer board of
0.87x0.73
inches
(22.10x18.47
mm).
Shared on
September 15th, 2016 07:23.
RF switch PE42641
One Watt Audio Amplifier - RevA
by![](../../../gravatar.com/avatar/19160cd93cadad82a5e4965cc5102da8ea98.jpg?s=16)
2
layer board of
1.50x1.25
inches
(38.13x31.78
mm).
Shared on
September 15th, 2016 00:54.
Revised One Watt audio amplifier with a Mini USB port and a IS31AP4991A amplifier. C1 thru C3 are 1uF ceramic caps, C4 is a 100uF electrolytic. R1 thru R3 are 4.7k-ohm resistors. R4 and R5 are 47k-ohm for a gain of 10 (20 dB) on the amplifier. As in the previous one-watt amplifier, a stereo signal from the 3.5mm jack is combined into a mono signal using a simple resistor network. The USB input is only used as a 5-volt power source.
Sensorboard v4.2
by![](../../../gravatar.com/avatar/87ea4e711776ee557e922321218c790dea98.jpg?s=16)
2
layer board of
1.67x0.77
inches
(42.32x19.46
mm).
Shared on
September 14th, 2016 20:08.
ESP8266 Sensorboard with switching regulator and BME280
9-Up cheapie XP V2.1
by![](../../../gravatar.com/avatar/45ded6aa8bc63ea7c9b62a1580b4f8efea98.jpg?s=16)
2
layer board of
0.89x0.89
inches
(22.50x22.50
mm).
Shared on
September 14th, 2016 20:01.
9x Cree XP PCB for cheap 9-LED flashlights. Although the Cree XP LEDs have a separate, electrically neutral thermal pad, it has been joined with LED- on this board, to help spread heat away from the LEDs. Most LED flashlight drivers use the LED- for current regulation. This board won’t work with those drivers, unless you find another way to isolate the LED- from Batt- in your flashlight. It is meant to be a drop-in replacement in lights which don’t include a driver.