FailStix
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
R2 for 40°C is 260Ohm and R2 for 60°C is 134Ohm
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
My Vin is 14V and my R1 is 155Ohm
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
I've now measured R1 for the gauges as well as the Vin when the engine is running.
But now I have stumbled across the ADS1115 GAIN setting. Based on the data I've collected, when my VDO temperature gauge is reading 40°C I should measure a Vout of 8.77V and at 60° a Vout of 4.52V. Can someone help me understand how I should set my ADS1115 GAIN setting for this case?
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
That’s my challenge as well. I will proceed as Jason outlined above for now. Will keep you all in the loop how that is working.
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
I've reviewed your wiring diagram and that is in line with what I would like to do on our boat. However, when looking into your source code I've noticed that you calculate the resistance of your temperature and oil pressure sensor using kMeasurementCurrent. From what I understand this would require the option (b) setup as outlined in the manual. Or am I missing something?
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
I will give measuring a go when I get access to the gauge again. Thanks for the input - will keep you in the loop.
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
For a 12V gauge is it correct to assume that Vin is 12V? And how do you measure R1?
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
If I understood the documentation correctly resistance measurement is only possible when there is no gauge installed in the circuit as HALMET will provide a constant current to measure the resistance: https://docs.hatlabs.fi/halmet/docs/usage/
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
So I guess I will just set up a curve for the voltage I am able to measure with the HALMET and the temperatures I can observe on the VDO gauge. However, this will not be accurate and will rely heavily on the data points I am able to collect.
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
I have found the specifications for the resistance of the sender. With the HALMET I am able to measure the voltage. In the snippets I found online I need to define the R1 and Vin, but here I can only guess what they are.
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
With the interpolation I‘m having issues converting the voltage to the resistance. I‘m unable to figure out what the provided voltage and internal resistance from the VDO gauges are.
31 replies
SKSignal K
•Created by FailStix on 4/11/2025 in #sensesp
FailStix - I recently purchased a HAMLET and am...
I would like to maintain the VDO gauges.
31 replies
SKSignal K
•Created by Captain on 3/5/2025 in #questions
IP Camera in Freeboard
@Captain Would be interested in which model you are going with. Thanks
7 replies
SKSignal K
•Created by jetkit on 3/11/2025 in #questions
freeboard-SK offline charts
in case you moved them to a folder (i.e FOLDER_NAME) within the charts folder you need to specify the whole path "/home/pi/.signalk/charts/FOLDER_NAME"
12 replies
SKSignal K
•Created by jetkit on 3/11/2025 in #questions
freeboard-SK offline charts
if you move your chart files to the default folder "~/.signalk/charts" you don't need to set any paths
12 replies