rp6conrad forum posts in last 60 days

Yesterday, I had a low wind session @ my homespot. I tested 4 PMMA-case ESP-GPS with next configurations :
1. Arm mount, BE182 partly covered, sats limited to 18 in the SW (motion setting)
2. Arm mount, BE182 free sight, sats limited to 18 in the SW (motion setting)
3. Boom mount, BE182 partly covered, unlimited sats (avg 26 sats)
4. Boom mount, BE182, partly covered, unlimited sats (avg 26 sats)
If you look at the HDOP numbers, nr 1 was worst. The other 3 were more or less the same. I am not sure why nr 1 was worst, maybe due to partly covered BE182, maybe because the hard limit of 18 sats. The 3 and 4 did perform the same as nr 1, but they received avg 26 sats. As walways, the speeds were higher with the arm mount units.
In my opinion, it does not make a huge difference if the Beitian is partly covered.

Greetings, Jan.

I did try today with the M10 @ 115 kbaud, it seems to work here with the new firmware. I upload SW5.92 to github with 115k support. I guess the old firmware will not test for 115k. Can you check your serial output when "Autodetect@boot" is set ? It should look like this :
.search SSID2
..ESP32 disconnected to WIFI
...ESP32 disconnected to WIFI
..ESP32 disconnected to WIFI
..ESP32 disconnected to WIFI
.No Wifi connection !
CPU freq 240 ?= 240
CPU freq ?= 80
XTAL freq ?= 40
Serial2 Txd is on pin: 33
Serial2 Rxd is on pin: 32
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Check UBX_MON_VER @9600bd

Check UBX_MON_VER @38400bd
Check UBX_MON_VER @115200bd
SW Ublox=ROM SPG 5.10 (7b202e)
HW Ublox=000A0000
Ublox M10 @115200bd
A
Set ublox M10 NMEA OFF
ACK 6138
Set ublox M10 BEIDOU OFF
ACK 6138
Set ublox M10 GLONAS ON
ACK 6138
Set ublox M10 UBX On
ACK 6138
Set ublox M10 NAV_PVT_ON
ACK 6138
Set ublox M10 NAV_DOP_ON
ACK 6138
Check UBX_MON_VER
SW Ublox=ROM SPG 5.10 (7b202e)
HW Ublox=000A0000
Check MON_GNSS settings
GNSS= :151311
Ask ublox Unique ID ID= :1821711701564
Set ublox M10 to 38400BD
ACK 6138
SW Ublox=ROM SPG 5.10 (7b202e)
HW Ublox=000A0000
Extensions Ublox= FWVER=SPG 5.10, PROTVER=34.10, GPS;GLO;GAL;BDS, SBAS;QZSS, ÷, ,
13
11
Set rate Ublox M10 ACK 6138
Let me now your findings !

Check the reed switch on gpio15, it seems that it is constant active. Normal voltage on gpio15 should be 3.3V, only when the reed switch is activated it should be 0 V.

The first water test of my diy GPS is a succes. My goal was to make a simple low budget GPS logger with a ESP32 as brain. Minimal solderskills are needed, as just the GPS has to be soldered to the right pins. Total budget is around 40?. Some technical details :
ESP32 board with e-paper display (Lilygo TTGO T5, 15$)
Beitian BN220 / BN280 gps (ublox M8n engine), 10$
Lipo 2000 mAh, with protection, 10$
Sealed case, 5$
A log rate of 10 Hz is possible, format UBX NAVPVT.
On my first water test, I had 2 units mounted on each boom side. The actual speed and the actual run is directly visible while surfing. The BN280 is the blue plot, BN220 the red plot. Number of sats was 16 - 20, logged@2 Hz. Fot who is interested, I am willing to share the SW (arduino IDE). Next test, I will log@10 Hz.
Greetings, Jan.