Mommy Button

Description

This is a pair of devices that can be worn and used to locate each other. Each will include a small 2 way radio, a directional finder and proximity finder. Each device will have a display with a circular compass indication the direction the other device is in, a color to indicate distance from each other, and a button in the center to activate an alert and 2 way audio

The devices will come with various clip attachment for wearing options. A strap for the wrist, a necklace, a clip to attach to clothes.

Components

1 × APRS GPS position encoder Decodes any NMEA-0183 compatible serial GPS sending $GPRMC or $GPGGA sentences. Transmits position, altitude, speed, heading, and timestamp (hour/minute/seconds or day/hour/minute). Supports SmartBeaconing, which adjusts transmission rates to speed and turning. Can transmit position in MIC-E, NMEA, or APRS ASCII text format. Burst after voice / Send Position Now input. Handles position resolution down to 7 inches.

1 × Byonics GPS5OEM GPS receiver module Size is 32mm x 32mm x 9mm, 0.7 oz

1 × Antenna to be concealed in bracelet or necklace 50 W 2.5 dB gain 144 / 440 MHZ frequency 9 cm length

1 × 12v power supply Providing short 2 amp pulses For 8 to 10 watt output

1 × Radio tranceiver Miniaturized 144/440 MHZ FM radio

Discussions

Peter Buca wrote 06/29/2016 at 21:58

I'd love to have this for my high power rockets. Sometimes hard to find in the tall grass.

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jonathan wrote 07/11/2014 at 16:10

Personal, useful, fun. Looking forward to updates!

Are you sure? yes | no

jeromekelty wrote 07/09/2014 at 01:49

This is a very interesting project! Eagerly awaiting your next update. :)

Are you sure? yes | no

Mike Szczys wrote 06/22/2014 at 13:24

Small, simple, possibly cheap, dedicated devices like this are brilliant. I can't wait to see this one come together.

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Mommy Button

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