Power GM862 from Arduino's 5V output
For lower current applications, e.g., sending SMS vs voice calling, it appears that you can readily power the Sparkfun’s USB GM862 module directly from the Arduino’s 5V output and ground pins. I connected Arduino’s 5V to GM862′s 3.8 V pin, Arduino’s ground to GM862 ground, Arduino digital 1 (TX) to GM862′ s TXD and finally Arduino’s digital 0 (RX) to GM862′s to RXD pin.
Note that the 5 V output drops down to 4.91 when measured at the GM862 board.
After you make the connections, you can control GM862 from your Arduino board without having to separately supply power to the GM862 board.
Crude battery powered Arduino and GM862
To run fully on a battery, I had to use two batteries. One for Arduino and one high capacity/current Polymer Lithium Ion (3.7V – 860mAH) for GM862. This did the trick. The regular 9V battery didn’t seem to have enough juice to run both Arduino and GM862. There must be a single battery option, but that will have to wait for another day.
July 13, 2009 at 6:08 pm |
[...] http://note19.com/2009/01/14/power-sparkfun-usb-evaluation-board-gm862-from-arduino/ Wireless + Arduino http://www.littlebirdelectronics.com/products/wishield-1-0 $89.35 http://www.geocities.jp/arduino_diecimila/wifi/index_en.html AT Commands http://www.traud.de/gsm/index.html http://www.developershome.com/sms/smsIntro.asp Memory http://www.arduino.cc/playground/Main/UsbMemory Share: [...]
September 27, 2009 at 5:12 pm |
Hi, thanks for the post, has anyone contrived a one-battery solution that can be recharged with a solar cell? I’d like to take my Arduino/GM862 off the grid long term.
December 9, 2010 at 6:51 am |
dear sir.
i have telit gm 862-gps.according gsm modem testing,when i insert the simcard into gsm socket,the telit not function.can you help me to solve this problem?
March 29, 2011 at 7:39 pm |
any chance you could give me more information on how you were able to get the module to send out a text message? we are trying to have it hooked up to a digital thermometer that would send a text when the temperature is too hot. any help would be great since we are having issues hooking the module up to Basic Stamp 2 and are looking for any other options since the module will not get past the autobauding stage. thanks a lot
March 30, 2011 at 4:22 am |
Are you able to run the basic AT command? You need to configure the modem for your carrier. AT&T requires different set of initial AT commands from say Rogers. There are other posts in this blog that show you how to send an SMS message. Have you seen these posts? You may want to start there.