OSH Park
Shared projects
INMP441.I2SMicrophone.v02
by
PeskyProducts.
2
layer board of
0.71x0.31
inches
(17.93x7.77
mm).
Shared on
February 15th, 2015 08:33.
Invensense’s bottom-ported MEMS digital microphones with an embedded ASIC which directly outputs 24-bit I2S serial data without the need of a CODEC. Board is intended as an add-on to the Teensy 3.x.
555 Blinker v2
by
buildchimp.
2
layer board of
0.98x0.98
inches
(24.82x24.79
mm).
Shared on
February 15th, 2015 07:45.
strobe LED
3v3PowerSupply using TPS63020
by
hansaya.
2
layer board of
1.23x0.80
inches
(31.19x20.32
mm).
Shared on
February 15th, 2015 03:55.
Switch Mode Power supply. TPS63020 chip, buck and boost to regulate the output at 3.3v. By changing the the two resistors output voltage can be changed.
ACS712 current sensor v3
by
TorontoBuilder.
2
layer board of
0.60x0.90
inches
(15.27x22.86
mm).
Shared on
February 14th, 2015 21:54.
Foam cutter circuit
by
TorontoBuilder.
2
layer board of
2.09x2.40
inches
(53.01x61.01
mm).
Shared on
February 14th, 2015 21:54.
Circuit board for variable output foam cutter using either a “short” 24" or “long” 48" Nichrome Wire.
Uses a SPST switch and a 5K Pot to adjust the power output. The SPST switch bypasses the 5 Ohm resistance when using the longer 48" length of Nichrome wire.
When using the shorter 24" wire the switch directs the current through the 5 Ohm resistance to make up for the drop in resistance of the shorter Nichrome Wire.
Minimum BOM: Transformer, 25.2 VAC, 2 Amps TRIAC 400V 6A TO220 Heat Sink 5K linear Pot 10 ohm resistors, 10 watt, 2 required in parallel to make 5 ohm, 20 watt resistance 470 ohm, 1 watt resistor SPST Switches, 2 required (1 main power on, other is long/short nichrome wire switch) 1A fuse & fuse holder 2 Banana Plugs terminals or similar Nichrome Wire Enclosure
Optional: power on indicator lamp