Hello i need some help for connect 2 power sensor att the same time for read 2 batteries
where plug the second power sensor and if is needed how to setup
Hi @adurix,
Both the Pixhawk and the Navigator flight controller boards only have a single port that’s intended for battery monitoring (with one pin for current, and one pin for voltage). Both boards do technically have at least two additional ADC pins that it should be possible to manually configure as BATT2 inputs, but they’re not in the standard “power sensor port” orientation, so you’ll need to make a custom cable to be able to use them for that purpose. I believe the Pixhawk 4 has two power ports, if that’s relevant / of interest.
If you’ve got a particular flight controller and power sensor in mind then we can help provide the additional information you’ll need to configure a second battery monitor.
Hello Eliot thanks for your fast response .
I m assembling new bluerov2 with navigator board and 2 power sense module
I m plitt the the terminal block and feed with 2 batteries half thruster and light and other side navigation camera thruster etc.
can you help me with the pin out for make mi wire and dont burn mi board.
The additional ADC pins on the Navigator are in the two connectors in the top left, and are labelled with their signal ranges. As shown on the PCB silkscreen, the signal wires are the middle ones, and the ground wires go on the right.
You might want to consider a wiring setup like this:
in which case I believe the relevant parameter values would be:
| Parameter | Value |
|---|---|
BATT2_MONITOR |
Analog Voltage and Current (4) |
BATT2_VOLT_PIN |
2 |
BATT2_CURR_PIN |
3 |
BATT2_VOLT_MULT |
22.0[1] |
BATT2_AMP_PERVOLT |
37.8788 |
BATT2_AMP_OFFSET |
0.330 |
The 6.6V input gets halved onboard to be measured by a 3.3 V ADC pin, so the normal ratio of 11.0 V of input per 1 V of output becomes 22.0 V of input per 1 V of output instead ↩︎
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Thanks a lot Eliot your solution work
But i have 3 rov with this set up and the volt meter show me the same read value like is only one power sensor connected.
I go to factory default new firmware etc same issue.
What do you mean by this?
I tried setting these parameters and when clicking on the battery indicator in QGC it shows two batteries, and their voltages are reported independently.
A question. Is it necessary to connect the 5V for this second Power sensor to port ADC0 and ADC1 from the power sensor itself?
Or at all? Thanks!
If you’re using our Power Sense Module then no - those pins are not connected internally anyway (as specified in the Technical Details section).
I likely just included them on the diagram for the convenience of not having loose wires hanging around, assuming the original cable was being modified for the new connection.
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