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Signal K

Signal K is an ecosystem for free and open source universal marine data exchange and software.

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Caribsailor - Lost all Victron BLE data after s...

Lost all Victron BLE data after signalk-victron-ble update. Is it possible to roll back version?

motamman - When using an I2C multiplexor, how d...

When using an I2C multiplexor, how do the pull up resistors affect the board? The microcontroller? I am connecting 8 INA260s to a TCA9548A multiplexor to an ESP32-C6. Individually, the INA260s work as expected but when all installed, they are a bit flaky. Is there a rule of thumb for calculating the total pull-up resistance threshold for a system?...

Gaston - There are rudder position sensors / ru...

There are rudder position sensors / rudder angle transducers from Raymarine and other brands. Most of them are based upon a potentiometer. You have to install them next to your rudder connecting them with a stud. Sometimes there isn't much space to mount it, and when your rudder is hanging on your transom it's probably fragile. Did anyone ever think of mounting a (3 axis) compass sensor on the rudder and, calculate the rudder angle by comparing it to another compass sensor mounted on the boat? These sensors aren't expensive, small, easy to mount, and there are no moving parts that can get stuck. Or is the potentiometer still more reliable and accurate?...

motamman - I posted this on the Arduino group b...

I posted this I2C MPU9250/imu Q on the Arduino group, but maybe some folks here might be able to help: I have a device that has the following components: 1. Beetle esp32-c6 (programmatically set SDA to GPIO 20, SCL to 19. RX to 21 and TX to 22.) 2. Beitain BE880 GPS connected to RX and TX pins. I am NOT using the internal compass. (TinyGPSPlus library: https://github.com/mikalhart/TinyGPSPlus)...

big__col - Me Halmet and SH-WG are both trying ...

Me Halmet and SH-WG are both trying to connect to my Venus instance of SignalK, and not the usual instance. How can i stop this happening please??

mgrouch - I designed a boat heave sensor. It us...

I designed a boat heave sensor. It uses accelerometer and gyroscope and runs on esp32. https://github.com/bareboat-necessities/bbn-wave-period-esp32....
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motamman - I have been happily coding various s...

I have been happily coding various sensors with Arduino IDE using various flavors of the esp32-c6. I had originally intended to use micro or circuit python but they didn't work with the new esp32s when I started. (And I am not sure they do now.) But that's besides the point. I was very pleased with my signalk integration this sailing season. Recently, however, I thought I would give sensesp a looksee now that I was comfortable in the c++ sorta/Arduino world. So I ported some code over to platformio using vs code, only to discover the esp32-c6s that I use aren't supported by Arduino with platformio. ...

Chris BHR - I hope its ok to post this question...

I hope its ok to post this question here (please let me know if there is somewhere more suitable). I have purchased ad Halmet and trying to use Visual Studio Code to programme it but its not detecting the serial port (via USB). When i plug it in i get a a red light, flashing blue light and 2 x green lights but i dont see any new devices appearing in Device Manager. I have tried several different cables. Is there a driver i need to install?

Gaston - I am working on a water sensor (to che...

I am working on a water sensor (to check if there is any water in the bilge). What I have read is that water sensor corrode because of electrolysis (which occurs when you set 3v on a water sensor). To reduce the corrosion you can use a digital out pin to power the sensor and turn it on when you want to take a measurement (you could measure every minute). An alternative is to use a capacitive sensor to prevent electrolysis. I am not sure if we can use one of the 'touch' pins of an ESP32 for that. Any suggestions or experiences that someone cares to share about the issue above or water sensors in general?...

Gaston - In previous versions of SensESP I used...

In previous versions of SensESP I used the sensesp/OneWire library for Dallas temperature sensors. It seems that the latest version (2.0.0) does not work with SensESP 3.0.0. Does anyone have an example how to use a Dallas temperature sensor with SensESP 3.0.0?...

Gaston - Hi all,I am trying to build the sense...

Hi all, I am trying to build the sense_template code for a lolin_s2_mini (Wemos S2 mini). I get build errors. The only thing I changed is the [env] settings in the platformio file. The error is related to the LED_BUILTIN = 15; code (see image). Is there anyone that can help me out here? My coding experience is limited....
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ab19 - Hi… I have a newbie question.. If I conn...

Hi… I have a newbie question.. If I connect HALMET to my circa '95 Yanmar engine’s senders, do I risk breaking signals to existing gauges? Is there amplification or signal boosting required? Trying to be cautious. Maybe overly so. Any advice would be greatly appreciated.

DWinchester - I have an sensesp coding question...

I have an sensesp coding question. I started this project using hatlabs HALMET firmware code considerably modified only using the tank part of code that used the analog converter modual. In the original code a constant scale factor was set before the statement:...

barnaclebill - Has anyone found a flow meter th...

Has anyone found a flow meter that works on small (10HP/7.5kW) outboards (for fuel)? Most I've seen have a minimum LPM that's a lot higher than a small outboard consumes.

big__col - Is this error anything to be concern...

Is this error anything to be concerned about?? Resolving esp32dev dependencies... Platform Manager: Installing espressif32 Downloading 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Unpacking 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Platform Manager: espressif32@6.8.1 has been installed!...

big__col - Bilge counter setup question. Hi al...

Bilge counter setup question. Hi all, I'm using Halmet digital inputs to read when our bilge pumps activate. I have this data in SK and written out to an InfuxDB. I'm interested in other peoples solutions, but I also have these questions for my current solution please. Q1, how do i count the number of times the bilge runs and display in a graph, date vs times activated? Q2, the database seems to record the state of the bilge switch several times per second. I really only want to know when it activates and for how long Q3, what do people use for external alerting, SMS/EMAIL/push, and how you configured? i have permanent internet aboard Thanks, Colin...

juans#0046 - Hi, I bought this tachometer for m...

Hi, I bought this tachometer for my YANMAR 2GM20, everything works but the value is always 0. I connect one wire to D4 and the other to GND. I followed the example in SENSESP repository. The signal of the tachometer is sinusoidal. Acabo de encontrar este increíble artículo en AliExpress. ¡Échale un vistazo! ...

DWinchester - Can someone point me to example s...

Can someone point me to example sensor code that uses multiple dallastemperature sensors.

ray_sabado - We have a generator that only has ...

We have a generator that only has shutdown sensors for exhaust temp, water temp, and oil pressure. What is the easiest way to get actual values for those parameters into Signalk?

mshulman - Does anyone have a CAN to USB device...

Does anyone have a CAN to USB device that they like with good linux drivers? I thought I had one, but I can't build the ubuntu drivers for it.