Sailabout
SKSignal K
•Created by Matti Airas on 3/11/2025 in #sensesp
Matti Airas - I have just published SensESP v3....
I forgot to tell that I also encountered problems to load the compiled SensESP v3 application on my ESP32 device. I found out that the speed under [env] upload_speed = 2000000 in the template platformio.ini file is too high and I had to reduce it.
6 replies
SKSignal K
•Created by Matti Airas on 3/11/2025 in #sensesp
Matti Airas - I have just published SensESP v3....
Experience on using sensesp v3 (by a non-coder, just a copy & paste guy).
I have a BME280 sensor connected to a ESP32 dev. kit that has been running the sensesp v1 app for a while. I decided to try sensesp v3.1 by following the information found on https://signalk.org/SensESP/pages/migration/ . I encountered a few problems and found solutions on Internet but it took me a lot of time.
First difficulty was the esp_websocked_client but it was solved by looking at the latest platformio.ini file pointed above by @Tony and adding -D USE_ESP_IDF_WEBSOCKED_CLIENT to the build_flags in the platformio.ini file.
Second difficulty was ReactESP. ReactESP seems to be included into SensESP but I found out that it is not, at least my version of platformio (on Bookworm OS on a Raspberry Pi 4) does not recognise it. I had to add the mairas/ReactESP library and include it in the lib-dep in the ini file.
Final difficulty: the compiled size was much larger than with the previous version of sensESP (Error: The program size (1604112 bytes) is greater than maximum allowed (1310720 bytes)). Using the following build-flags -Os (optimize for size), -D DISABLE_SENSESP_OTA and -D DISABLE_SENSESP_DEBUG did not help. The only way was to modify the partitions by creating a partitions.csv file with the following content:
Name, Type, SubType, Offset, Size, Flags
nvs, data, nvs, 0x9000, 0x5000,
otadata, data, ota, 0xe000, 0x2000,
app0, app, ota_0, 0x10000, 0x300000,
app1, app, ota_1, 0x310000,0x300000,
spiffs, data, spiffs, 0x610000,0x1F0000,
put the file in the project directory and add the following line in the platformio.ini file:
board_build.partitions = partitions.csv
6 replies
SKSignal K
•Created by petsi on 10/29/2024 in #plugins-and-webapps
petsi - bt-sensors-plugin-sk This plugin cand d...
There is also this European Bluetooth BMS, 123SmartBMS (https://123electric.eu) that I am considering for my conversion to LiFePO4 next year. I guess it is not popular enough to warrant efforts to have it covered in a SK plugin but there is some information here: https://github.com/123electric/smartbms-thingspeak
8 replies
SKSignal K
•Created by Sailabout on 7/18/2024 in #questions
World Coastal Map for Freeboard
Thank you for the quick answer. I shall try when my boat Raspberry Pi 4 with OpenPlotter 3 (8GB and 250 GB SSD) has a good Internet connectivity. At home, on Windows 10 and with several downloader softs, the download always stops near the end with a 401 error.
7 replies
SKSignal K
•Created by Sailabout on 6/25/2024 in #server
Sailabout - Wanting to create a gauge with zone...
Thanks (by the way, it is more like kΩ in this specific BME680 case)
6 replies
SKSignal K
•Created by Sailabout on 2/25/2024 in #questions
Connection between only 2 NMEA2000 devices
@Matti. Thank you for the confirmation. A N2K network starter kit (cables, one T and two terminal resistors) cost more than the module I want to connect to my plotter.
6 replies
SKSignal K
•Created by Sailabout on 2/25/2024 in #questions
Connection between only 2 NMEA2000 devices
I found that people in labs, for the ease, simply use 2 wires (usually a twisted pair), shorted with a single 60 Ohm resistor, to connect 2 (or sometimes more) CANbus modules. This works as long as the length of the connection(s) is very short. I shall test it when I go to the boat in the spring.
6 replies
SKSignal K
•Created by Sailabout on 2/25/2024 in #sensors
Sailabout - Has somebody any experience with th...
Thank you. I think to try first the sensesp way as shown on "digitize an older engine" on https://forum.openmarine.net/showthread.php?tid=3958
6 replies
SKSignal K
•Created by Sailabout on 2/25/2024 in #sensors
Sailabout - Has somebody any experience with th...
sorry, it is a N2K hub
6 replies