I am using a Telit GE865 GSM module which I have connected to a USB FT232 (Sparkfun# BOB-0718). I have connected the 3.3V power and the TX/RX from the BOB-0718 and I get a serial connection with no problems. Now that I have things working I am looking to use a seperate power supply and in my case I intend to use a lipo single cell battery. I left the RX/TX connections to the BOB-0718 and connected the Telit to the battery. I verified with a voltmeter that the Telit is getting power but I can no longer get a serial connection. As soon as I take the 3.3V power from the BOB-0718 I get the connection right back. Why would it matter where I get power from? Any help would be appreciated, thanks!
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| How to connect a battery to the GM862-GPS | 11 | 5368 | August 10, 2009 | |
| Telit GM862 Problem | 14 | 3235 | February 2, 2010 | |
| how to power my gm862 telit module and communicate with it? | 1 | 825 | May 26, 2010 | |
| Telit GM862-GPS resetting itself | 11 | 4151 | November 24, 2008 | |
| Telit GPS GM862 only works for like 2 seconds on start up. | 9 | 2408 | April 22, 2008 |