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APRS companion
by
DonBindner.
2
layer board of
2.48x0.70
inches
(62.97x17.88
mm).
Shared on
July 22nd, 2015 04:29.
Decodes APRS audio from your radio and sends it via bluetooth to your phone or laptop. Requires an Inland Arduino Mini Pro, and an HC-05 bluetooth card.
MPM3620A.v02
by
4
layer board of
0.71x0.31
inches
(17.93x7.75
mm).
Shared on
July 22nd, 2015 02:12.
Monolithic Power’s MPM3620A step-down converter here configured to accept 5 - 12 V in and deliver up to 2 A of continuous load current at 5 V out. The board is designed to be mounted directly on top of the Teensy 3.1 above the USB connector, with the 5 V output from the MPM3620A powering the Teensy through VIN. There is a TI TLV70733 LDO voltage regulator which further reduces the voltage to 3V3 at up to 300 mA continuous load current. This small power management board for the Teensy 3.1 allows the powering of the Teensy 3.1, other 3V3 peripherals like sensors that might need more than the Teensy’s on-board regulator can deliver (< 100 mA), and/or power-hungry 5 V peripherals like addressable leds and motors. There is a convenient on/off slide switch which controls the MPM3620A’s enable. There is a red led which is off under normal operation and lights on pre-start, thermal limit, undervoltage and overcurrent thresholds. White circles denote GND. Corrected led circuit.
TPS61088.v02
by
2
layer board of
0.97x0.56
inches
(24.66x14.10
mm).
Shared on
July 22nd, 2015 02:12.
TI’s TPS61088 boost converter here configured to up-convert a one-cell LiPo battery to 4.8 V at up to 10 A. Changing a single resistor changes the output voltage from 4.8 V (300 K) to 9.6 V (600 K). On-off switch for easy power down. Intended to attach directly to a LiPo battery to allow higher motor drive voltages. Improved layout a bit.
MX Switch w/ Hall sensor
by
Matt_V.
2
layer board of
0.73x0.73
inches
(18.44x18.44
mm).
Shared on
July 21st, 2015 19:17.
For A1301 sensors (or similar pinout, check your datasheet), flat side of the sensor against the pcb.
Octagonal pads: +5V
Square pads: GND
Round pads: sensor data
Baofeng ptt
by
lordkalma.
2
layer board of
0.84x1.35
inches
(21.26x34.29
mm).
Shared on
July 21st, 2015 18:12.
Allows use a baofeng radio with a computer sound card. PTT via serial RTS.