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Hi guys,
maybe some of you also wanted to achieve this in the past and have probably a technical solution for this task.
I intend to use Norbert Brüggen's pitch- / depth controller LTR as well as his ballast tank switch BTS.
My approach is the following:
For my impression, the pitch- / depth controller with its integrated pressure sensor needs to "talk" to the ballast module in order to maintain neutral buoyancy at the selected depth.
It is this real-time control loop that is required and I am pretty sure that the two BTS relais will be "quite active".
In case it turns out that this relais-based solution is not the solution, one can substitude this stage by an analogue version, e.g. an OpAmp-based comparator (small hysteresis around zero), followed by a motor driver (bridge).
Question: Has anyone done this before ?
Thanks in advance for any hint !
Cheers
Volker
maybe some of you also wanted to achieve this in the past and have probably a technical solution for this task.
I intend to use Norbert Brüggen's pitch- / depth controller LTR as well as his ballast tank switch BTS.
My approach is the following:
- Trimming the sub (ballast) for neutral buoyancy (dive tank filled to some 75%). This volume for safe return in case of emergency, failsafe, etc. .
- Using a linear slider on the transmitter for depth selection.
- Sub shall dive to this selected depth and shall stay there (control loop).
For my impression, the pitch- / depth controller with its integrated pressure sensor needs to "talk" to the ballast module in order to maintain neutral buoyancy at the selected depth.
It is this real-time control loop that is required and I am pretty sure that the two BTS relais will be "quite active".
In case it turns out that this relais-based solution is not the solution, one can substitude this stage by an analogue version, e.g. an OpAmp-based comparator (small hysteresis around zero), followed by a motor driver (bridge).
Question: Has anyone done this before ?
Thanks in advance for any hint !
Cheers
Volker