Hello thread, I am having some issues getting the botletics sim7000a to even turn on when using the Arduino Uno R3. First of all, there are clearance issues. The 3 little silver things on the back of the shield are clashing with the r3 rectangular channel, I believe this is causing an bad connection and not allowing the shield to turn on. So I went and got some extender pins for the uno, still no luck. Is there anything else I should be doing? Is this something that can be solved by soldering the pins? Is the 7000a even compatable to work with an Uno r3? Thanks for the help, it is greatly appreciated.
Also, please note that you will need a 3.7V LiPo battery (1000mAH capacity or larger is recommended) connected to the shield for it to power on properly. Please also make sure that the polarity of the battery is correct, as many vendors reverse the wires. The red wire should be on the left side of the connector when you plug it into the shield. Adafruit and Sparkfun both use the correct polarity.
I’m having a similar issue. I have verified the solder connections with a continuity check. Also, switch the polarity of battery and checked the output voltage. I have gotten the GPS portion to work, but once I start to use the cellular functions the power turns off for the module. Also, had a power supply hooked up to the module at one point.
To test, don't use a power supply and only have the battery connected. Then power it on with the pushbutton and run AT commands via USB. When you say it powers off, do you mean the green "PWR" LED actually turns off? Or does the module just not seem to respond to AT commands?
I'm running the LTE Demo right now. Sometimes the PWR LED will remain on, other times it turns off.
FONA> FONA basic test Initializing....(May take several seconds) Configuring to 9600 baud Attempting to open comm with ATs ---> AT <--- ---> AT <--- ---> AT --------------------------- <--- ---> AT <--- ---> AT <--- ---> AT <--- ---> AT <--- ---> AT ---------------------------- I think the PWR LED turns off around this area. <--- AT ---> ATE0 <--- ATE0 ---> ATE0 <--- OK ---> AT+GMR <--- Revision:1351B03SIM7000A
---> AT+CPMS="SM","SM","SM" <--- +CPMS: 0,10,0,10,0,10 FONA is OK Found SIM7000 ---> AT+GSN <--- 865235030718890 Module IMEI: 865235030718890 ---> AT+CFUN=1 <--- ---> AT+CGDCONT=1,"IP","hologram" <---
Hmmm that's very strange, I've never seen that happen. Perhaps reverse polarity damaged it in some way... It seems unlikely though, if it's still responding to commands. Is this with GPS on? It shouldn't matter, but try cellular data with GPS off.