GSM / GPS modules on FR4 with copper foil offers proper ground plane
This concept shows an ultra light GSM/GPS tracker to track tiny animals like birds or prairie dogs. It also can be used to track expensive oil on canvas. The concept is following the idea of cost reduction by using of free of charge components, services and software.
The ultra light GSM / GPS tracker is using the freebies or freeware as below
- A-GPS server
- Digital maps
- Web based mapping server
- Evaluation kit micro controller Renesas RL78
The ultra light GSM/GPS tracker could use the following freebies or freeware
- Embedded GSM antenna as PCB track
- Schematic diagram of eSIM parallel to plastic SIM card
Description of the ultra light GSM / GPS tracker
The selected GSM module is the world smallest and offers a low power power consumption. The chosen GPS module is the tiniest with embedded, switched DC/DC converter. The GPS module is supported by free of charge A-GPS server. A-GPS will help to reduce the TTFF (Time To First Fix). The eSIM is soldered direct on the PCB without need for a SIM card holder. The micro controller of Renesas (RL78 family) charges 1.3 mA by 1 MHz operating frequency only. The GSM antenna is a very special, that is well working on small ground plane. The GSM antenna can be optimised and customised on low costs. The ground plane was increased by soldering cheap copper foil to the PCB. The enclosure will be an inexpensive and light shrink tube.
The visualization of the pin point on the screen will be done by selecting one of the several free of charge software options.
GSM / GPS modules, antennas and further parts
- GSM module Telit GE865 (small 22 mm x 22 mm only, low power consumption)
- GPS module Fastrax IT430 or IT 520 (best in class in size and power consumption)
- GPS antenna (sketch shows a chip antenna, loop or other type tbd)
- GSM antenna (sketch shows a lambda/4 monopole, other type tbd)
- SIM card as eSIM (other tbd)
- Micro controller Renesas (evaluation kits free of charge until 30th. of June 2011)
- Shrink tube, copper foil
- Battery (sketch shows LiPo Battery, other tbd)
- Further options (tbd)
Further free of charge tools used to create this concept
- OpenOffice Writer: To write this text (Linux or Windows)
- MyPaint: To paint the sketch on tablet PC (Linux or Windows)
- Picnik: To optimise the sketch (Online tool and independent on OS)
- Wordpress, Twitter, Facebook, Myspace, Thunderbird and Firebird to stay in contact with M2M developers
Everybody who is interested in further details and information on the concept or an other wireless M2M concept is welcomed to send me an e-mail harald.naumann (at) gsm-modem.de .