jh
Newbie
Posts: 6
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Post by jh on May 7, 2023 6:32:53 GMT
Hi, I'm running into an issue with my SIM7000A. I'm using 3.7 V LiPo 3000 mAh battery and the polarity is correct. Solder connections look fine... Upon uploading LTE_Demo onto Arduino/resetting Arduino, very shortly after the shield powers off. Right about when the menu of options prints in the serial monitor is when the shield powers off. And upon turning it back on via the PWR button, I cannot find any network... Any advice? Thank you!
Also, I noticed there was a thread with a very similar issue to mine but I did not see any solution. Was wondering if anyone found a solution?
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Post by Botletics on May 7, 2023 12:57:20 GMT
Can you please post a log of the serial monitor?
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jh
Newbie
Posts: 6
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Post by jh on May 10, 2023 21:19:16 GMT
Modem basic test
Initializing....(May take several seconds)
Configuring to 9600 baud
Attempting to open comm with ATs
---> AT
<--- OK
---> ATE0
<--- OK
---> ATE0
<--- OK
---> AT+GMR
<--- Revision:1351B03SIM7000A
OK
---> AT+CPMS="SM","SM","SM"
<--- +CPMS: 0,10,0,10,0,10
Modem is OK
Found SIM7000
---> AT+GSN
<--- 865235030714519
Module IMEI: 865235030714519
---> AT+CFUN=1
<--- OK
---> AT+CGDCONT=1,"IP","hologram"
<---
-------------------------------------
[?] Print this menu
[a] Read the ADC; 2.8V max for SIM800/808, 0V-VBAT for SIM7000 shield
[b] Read supply voltage
[C] Read the SIM CCID
[u] Unlock SIM with PIN code
[i] Read signal strength (RSSI)
[n] Get network status
[1] Get network connection info
[c] Make phone Call
[a] Get call status
[h] Hang up phone
[p] Pick up phone
[N] Number of SMS's
[r] Read SMS #
[R] Read all SMS
[d] Delete SMS #
[D] Delete all SMS
[s] Send SMS
[u] Send USSD
[y] Enable local time stamp (SIM800/808/70X0)
[Y] Enable NTP time sync (SIM800/808/70X0)
[t] Get network time
[G] Enable cellular data
[g] Disable cellular data
[l] Query GSMLOC (2G)
[w] Read webpage
[W] Post to website
[2] Post to dweet.io - 2G / LTE CAT-M / NB-IoT
[3] Post to dweet.io - 3G / 4G LTE
[O] Turn GPS on (SIM808/5320/7XX0)
[o] Turn GPS off (SIM808/5320/7XX0)
[L] Query GPS location (SIM808/5320/7XX0)
[E] Raw NMEA out (SIM808)
[s] Create serial passthru tunnel
-------------------------------------
Modem>
RDY
+CFUN: 1
+CPIN: READY
SMS Ready
n
---> AT+CGREG?
<--- AT+CGREG?
Network status 0: Not registered
+CGREG: 0,5Modem>
OK
G
---> AT+CIPSHUT
<--- AT+CIPSHUT
---> AT+CGATT=1
<--- AT+CGATT=1
Failed to turn on
OK
Modem>
Hi, thanks for getting back to me and sorry for the late reply.
This is the serial monitor upon uploading LTE_Demo. As it shows, right about when it reads the IMEI of the shield, the shield powers off (LED light turns off). Then after a few seconds, the menu prints out. As you can also see, I tried pressing [n], getting network status, but it cannot find a network and also [G], and could not turn on LTE.
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Post by Botletics on May 11, 2023 1:38:17 GMT
Hmmm that is strange that it wouldn't get past the menu while staying powered on. Have you tried powering it on without connecting it to the Arduino? Connect only the battery to it, then press and hold the PWR button for a couple seconds and let go, and see if it powers on and stays on without doing anything.
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jh
Newbie
Posts: 6
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Post by jh on May 17, 2023 21:24:38 GMT
Hi, sorry for the late response again (classes have been getting really busy). I just did what you recommended (power it on without Arduino) and it stays powered on. Thank you!
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Post by Botletics on May 17, 2023 23:11:52 GMT
No problem. That's also with the SIM card inserted?
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jh
Newbie
Posts: 6
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Post by jh on May 18, 2023 0:34:10 GMT
Yes, that was with the SIM card being inserted
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