Chip-cn-dat/quectel-dat/Quectel_Product_Brochure_V8.1.pdf
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Chip-cn-dat/quectel-dat/quectel-dat.md
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4 4
- [[ec20-dat]]
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+## GNSS
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+
8
+- [[L76-dat]]
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+
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## Info
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@@ -10,4 +14,6 @@
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- [[SIMCOM-AT-DAT]]
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13
-- [[quectel-GNSS-dat]] - [[quectel-gps-dat]]
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\ No newline at end of file
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+- [[quectel-GNSS-dat]] - [[quectel-gps-dat]]
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+
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+- [[Quectel_Product_Brochure_V8.1.pdf]]
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\ No newline at end of file
Chip-cn-dat/quectel-dat/quectel-gps-dat/L76-dat/L76-LB Hardware Design.pdf
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Chip-cn-dat/quectel-dat/quectel-gps-dat/L76-dat/L76-LB.PDF
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Chip-cn-dat/quectel-dat/quectel-gps-dat/L76-dat/L76-dat.md
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@@ -5,7 +5,7 @@
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The module can be connected to a dedicated passive or an active single-band GNSS antenna in order to track the GNSS satellite signals.
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-- [[quectel_l76_series_hardware_design_v3-3.pdf]]
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+- [[quectel_l76_series_hardware_design_v3-3.pdf]] - [[L76-LB Hardware Design.pdf]]
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- [[quectel_l76_seriesl96_gnss_raw_measurements_application_note_v1-0.pdf]]
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@@ -15,8 +15,35 @@ The module can be connected to a dedicated passive or an active single-band GNSS
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## L76 VS L76-L VS L76-B
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+
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+| model | status | systems | channels |
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+| ----- | --------- | --------------------------------------- | ------------- |
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+| L76K | | GPS/GLONASS/BDS/QZSS |
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+| L76-L | available | GPS, GLONASS (or BDS), Galileo and QZSS | 33track/99acq |
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+| L76 | | | |
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+| L76-B | available | GPS/BDS/QZSS | |
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+| L70 | NA | GPS + QZSS | |
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+| L70-R | available | GPS + QZSS | |
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+
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+
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+- [[Quectel_L76B_GNSS_Specification_V1.1.pdf]]
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+- [[L76-LB.pdf]]
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+
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+
18 33
- L76-L supports: Additional LNA, I2C
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+| model | LNA | Vio | extra |
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+| -------- | --- | -------- | ----- |
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+| L76 | x | 2.7-2.9V | |
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+| L76-L | y | 2.7-2.9V | I2C |
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+| L76-L(L) | y | 1.7-1.9V | |
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+
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+
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+- L76L-M33 is L76-L. = 2.7-2.9V Vio
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+- L76LL-M33 is L76-L(L). = 1.7-1.9V Vio
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+
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+https://forums.quectel.com/t/l76-module-naming-and-i-o-voltage-l76l-m33/22934/3
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+
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## block diagram
22 49
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@@ -37,11 +64,15 @@ Sending corresponding command will make the modules enter Standby mode. Sending
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## hardware
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+### antenna design
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+
40 69
1. There is no need to use an additional LNA for L76-L and L76-L(L) modules, because there isalready an embedded LNA inside these two modules.
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2. The selected LNA should support both GPS and GLONASS system. For more information, pleasecontact Quectel technical supports.
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3. The power consumption of the device can be reduced by controlling the LNA ENABLE pin throughthe ANTON pin of the modules. If ANTON function is not used, please connect the LNA ENABLEpin to VCC and keep LNA always on.
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+### version check
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+- $PQVERNO,R*3f
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@@ -50,7 +81,7 @@ Sending corresponding command will make the modules enter Standby mode. Sending
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- [[L76-log-dat]]
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-- [[antenna-dat]] - [[gps-dat]] - [[quectel-gps-dat]]
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+- [[antenna-dat]] - [[gps-dat]] - [[quectel-gps-dat]] - [[quectel-dat]] - [[gnss-dat]]
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- [[GPS-antenna-design-dat]]
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Chip-cn-dat/quectel-dat/quectel-gps-dat/L76-dat/Quectel_L76B_GNSS_Specification_V1.1.pdf
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Chip-cn-dat/quectel-dat/quectel-gps-dat/quectel-gps-dat.md
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@@ -13,9 +13,6 @@ https://www.electrodragon.com/product/quectel-gps-gnss-series-mini-module-versio
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-
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-
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-
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## L70 series
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- L70 EOF
Tech-dat/Network-dat/location-dat/GNSS-dat/GNSS-dat.md
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@@ -5,8 +5,7 @@
5 5
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- GSV - GNSS Satellites in View.
7 7
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-- GSA - GNSS DOP and Active Satellites. GNSS receiver operating mode, satellites used in the navigation
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-solution reported by the GGA sentence, and DOP values.
8
+- GSA - GNSS DOP and Active Satellites. GNSS receiver operating mode, satellites used in the navigation solution reported by the GGA sentence, and DOP values.
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- GLL - Geographic Position – Latitude/Longitude.
12 11
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@@ -14,10 +13,26 @@ solution reported by the GGA sentence, and DOP values.
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- VTG - Course Over Ground & Ground Speed.
16 15
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-- RMC - Recommended Minimum Specific GNSS Data. Time, date, position, course, and speed data provided by
18
-a GNSS receiver.
16
+- RMC - Recommended Minimum Specific GNSS Data. Time, date, position, course, and speed data provided by a GNSS receiver.
19 17
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+## commands examples
20 19
20
+ Search GPS + GLONASS:
21
+ $PMTK353,1,1,0,0,0*2B
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+
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+ Enable GPS, Glonass, Galileo:
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+ $PMTK353,1,1,1,0,0*2A
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+
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+Sets the speed threshold for static navigation.
27
+
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+ $PMTK386,0.4*39
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+ $PMTK001,386,3*3D
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+
31
+Gets whether the GPS/GLONASS/BDS/Galileo satellite seraching is enabled or not.
32
+
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+ $PMTK355*31
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+ $PMTK001,355,3,1,1,0,0*33
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+
21 36
## ref
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- [[GPS-dat]]
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Tech-dat/antenna-dat/antenna-design-dat/GPS-antenna-design-dat/GPS-antenna-design-dat.md
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@@ -2,6 +2,13 @@
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## active antenna
4 4
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+- A passive antenna is recommended if the antenna can be placed close to the modules, for instance, when the distance between the modules and the antenna is less than 1 m.
6
+- Otherwise, use an active antenna, since the insertion loss of RF cable can decrease the CNR of GNSS signal.
7
+
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+
9
+
10
+## examples
11
+
5 12
![](36-19-17-14-03-2023.png)
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C1 = 0R
tools-dat/51-28-15-19-12-2022.png
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tools-dat/mechanical/screw-drivers-dat/2024-10-10-02-29-19.png
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tools-dat/mechanical/screw-drivers-dat/2024-10-10-02-30-32.png
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tools-dat/mechanical/screw-drivers-dat/screw-drivers-dat.md
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@@ -0,0 +1,11 @@
1
+
2
+# screw-drivers-dat
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+
4
+![](2024-10-10-02-29-19.png)
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+
6
+![](2024-10-10-02-30-32.png)
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+
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+
9
+## ref
10
+
11
+- [[screw-drivers]]
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\ No newline at end of file
tools-dat/serial-monitor-dat/51-28-15-19-12-2022.png
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tools-dat/serial-monitor-dat/serial-monitor-dat.md
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@@ -0,0 +1,11 @@
1
+
2
+# serial-monitor-dat
3
+
4
+## demo test for esp32-C2
5
+
6
+1、打开串口工具ThingsTurn_Serial_Tool.exe，默认波特率74880
7
+
8
+![](51-28-15-19-12-2022.png)
9
+
10
+## SSCOM
11
+
tools-dat/serial-monitor.md
... ...
@@ -1,10 +0,0 @@
1
-
2
-
3
-### demo test for esp32-C2
4
-
5
-1、打开串口工具ThingsTurn_Serial_Tool.exe，默认波特率74880
6
-
7
-![](51-28-15-19-12-2022.png)
8
-
9
-
10
-