OSH Park
Shared projects
Foam Cutter Circuit Board
by
TorontoBuilder.
2
layer board of
2.09x2.40
inches
(53.01x61.01
mm).
Shared on
February 2nd, 2015 04:04.
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
Battery Charger Logic Board
by
mwismer.
2
layer board of
1.78x1.08
inches
(45.11x27.31
mm).
Shared on
February 2nd, 2015 03:18.
https://upverter.com/OlinREVO/d4664ab3e95d1386/Battery-Charger—Logic-Board/
BLE V1.0
by
jgyorffy.
2
layer board of
0.95x0.78
inches
(24.00x19.71
mm).
Shared on
February 2nd, 2015 00:03.
Bluetooth board for the nRF8001 chip. Small board layout. With this chip antenna, the line-of-sight range is easily over 5 meters. Easy to solder connecting wires to the pads on the side. By John Gyorffy
LM75 brd
by
ardu_pcb.
2
layer board of
0.48x0.40
inches
(12.09x10.16
mm).
Shared on
February 1st, 2015 23:04.
LM75 brd
Laser Receiver
by
wkomm1.
2
layer board of
1.10x0.91
inches
(28.02x23.04
mm).
Shared on
February 1st, 2015 18:02.
An op-amp powered laser receiver using a PIN photodiode with digital output.
The first op-amp stage amplifies the output of the diode and the second stage compares the amplified signal to an adjustable value, so as to get a digital output.
Designed by William Kommritz