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Post by vasko on Dec 31, 2016 10:09:51 GMT
simple control - as described by sailbleu - thoughts : battery : I will suggest use 78x18650 x 2600mah - connect first in parallel next in series and get to 12.6 volts - to by the cells best option is to buy cells from old laptops or if cannot find the same this much - buy from here - quality is guaranteed and price is good also : www.ev-power.eu/Li-Ion-18650-cells/with amount of batteries you will get 67ah - usable - which will give you about 2 hours+ pottering about with your dinghy charging : you need to get something of the shelf or build yourself - the trick is to not allow the voltage when charging to NEVER go over 12.6v-12.7v - you may be able to use some solar charge controller which allow voltage regulation - or build a simple one using arduino and single channel h-bridge + volt and amp meter discharging : you should limit to 9.6 - under 9.6 for more then 5 sec - should stop the engine and under 9.0 no matter for how long stop the engine also - or you will ruin the battery pack balancing : don't worry if connect first in parallel next in series the cell will equalise themselves propellers: when using two engines - you will need to charge the propellers - e.g put 3 blade props from 24v motors to your 50lbs 12v motors - as in the other case you endup with a lot of power but the boat is not moving fast. I'm not sure abut how you can control two controls with one ... the simpler option for e is a cpu and software - but I'm a software engineer and everything that involves hardware scares me
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Post by vasko on Dec 31, 2016 10:14:52 GMT
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Post by vasko on Jun 30, 2017 3:52:21 GMT
Finally GPS guided and remote controlled electric dinghy engine - with "Tap to Sail" mode and all little extras as promised :
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Post by MickeyB on Jun 30, 2017 7:16:57 GMT
I love the way it does 180's....really looking forward to this one!
Very well done Vasko! Can we have close ups and a run by of everything of is that under the covers still?
Mike
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Post by vasko on Jun 30, 2017 12:47:14 GMT
Will do some close ups with the drone (when find a calm weather) and with my garmin virb action cam also
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Post by vasko on Jun 30, 2017 14:04:17 GMT
Electric engine on the davits
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Post by vasko on Jul 2, 2017 11:51:13 GMT
Close video of person been in the actual dinghy :
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Post by sailbleu on Jul 3, 2017 4:48:44 GMT
Still following the project , happy you're continuing the development. But something came to mind . Have you also designed an emergency tiller just in case the electronics fail and the steering is gone ?
Any view on the max speed and range ? What battery pack is in now ?
Regards
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Post by vasko on Jul 3, 2017 22:40:36 GMT
emergency tiller is currently 2 buttons on the box - that controls the motors individually - little bit rudimentary , but does the job - will be changed with 5 buttons set - forward, backward, left , right, stop
battery - two sets are tested : 78ah from 18650 cells , 12.6v- last about 1h on max speed and 40ah lifepo4 14.8v
max speed : 12.6v - 5.2kts, 14.8v - 7.1 kts
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Post by MickeyB on Jul 4, 2017 7:02:12 GMT
So the 12.6v lasts about an hour.
How long does the 14 last for, doing roughly the same speed (I know it is faster but assuming both at say 3kts?)
Having a bit more speed for 'those times' can be a life saver (getting cold wine to the boat for example).
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Post by vasko on Jul 4, 2017 7:53:33 GMT
haven't tested how long the LiFePo4 kit lasts but it is roughly about 2/3 of the AH of the 12.6 ( 18650 pack) should last about 2/3 of the time of the 12.6 pack ( currently I'm using the 12.6 pack and changing is quite a big job with the prototype open and reseal the box - something that I plan to improve a lot in the final product)
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Post by sailbleu on Mar 28, 2019 5:34:03 GMT
Vasco ,
would like to revive this topic with a question concerning lithium batteries . I have decided to keep my 12 volt electric outboard but in context of reducing the weight on my boat I intent to replace the lead/acid batteries I have for this outboard , 2 x 50Ah , into a single Li-ion or lipo battery that can meet up with the 2 lead acids in parallel . I have found that 100 Ah is sufficient for average use , so by switching to lithium I will be able to get quite some weight down . What combination would you suggest vasko , preferably with a plug & play charger ?
Thanks already
Regards
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Post by vasko on Mar 30, 2019 3:14:38 GMT
Vasco , would like to revive this topic with a question concerning lithium batteries . I have decided to keep my 12 volt electric outboard but in context of reducing the weight on my boat I intent to replace the lead/acid batteries I have for this outboard , 2 x 50Ah , into a single Li-ion or lipo battery that can meet up with the 2 lead acids in parallel . I have found that 100 Ah is sufficient for average use , so by switching to lithium I will be able to get quite some weight down . What combination would you suggest vasko , preferably with a plug & play charger ? Thanks already Regards million of options of course the easier to fit the scenario that you describer is to use 2x or 3 x the following type and just charge them from the normal boat 12v system : www.ev-power.eu/LiFeYPO4-batteries-12V-1-1/Lithium-Battery-LiFePO4-12V-20Ah.htmlyou can also choose any of this also : www.ev-power.eu/LiFeYPO4-batteries-12V-1-1/another good option will be to put in the bin the old lead-acid one and buy a completely new hi-power very light Li-Po set for hobbyking - (choose the right type depending on your outboard voltage) and also a charger from hobbyking for the set ( it usually connects from one side to the 12v system and from the other to the battery) you will need number of pack connected in parallel - if I'm on your place I will bundle all this in a box with chargers etc. inside - one charger per pack - and just have a socket on the box that is plugged when when need charging. for me the most annoying part will be to remove the outboard and/or batteries every 2-3 trips to shore and bring them on the boat and charge them etc. in all scenarios I will prefer the batteries to be in some box permanently fixed to the dinghy and have some long enough cables from the boat to connect and charge them while the dinghy in on the davits - and never take the outboard and batteries of the dinghy...- just plug a socket when charging.
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Post by sailbleu on Apr 3, 2019 5:20:45 GMT
Thanks Vasko , will go for a plug and play type , still fairly expensive though , but I absolutely need to get the weight down. Also looking forward to some updates of your project .
Regards
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Post by vasko on Apr 3, 2019 14:00:10 GMT
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Post by sailbleu on Dec 17, 2019 10:34:47 GMT
Vasco , what would be your take on this combo for the electric outboard ? : For the Atlantic jump next year I need to take a lot of stuff to the boat ( and off !) ( stationed on the Canaries) and therefor was trying to find an excuse to get there by car & ferry in April , return home ( with full car trunk ) in August and finally fly back in December. That way we also have a car for the 3-4 months we spend on the islands . The Lifepo4 unit(s) would swing the balance to the car as it's absolutely prohibited to carry/transport these batteries on a commercial flight. I've also heard/read some horror stories on import to the Canaries and absurd shipping rates. Regards EDIT: any developments / progress on your E-outboard ?
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Post by vasko on Dec 17, 2019 14:12:14 GMT
Vasco , what would be your take on this combo for the electric outboard ? : For the Atlantic jump next year I need to take a lot of stuff to the boat ( and off !) ( stationed on the Canaries) and therefor was trying to find an excuse to get there by car & ferry in April , return home ( with full car trunk ) in August and finally fly back in December. That way we also have a car for the 3-4 months we spend on the islands . The Lifepo4 unit(s) would swing the balance to the car as it's absolutely prohibited to carry/transport these batteries on a commercial flight. I've also heard/read some horror stories on import to the Canaries and absurd shipping rates. Regards EDIT: any developments / progress on your E-outboard ? The link is to a Electric Bicycle ? - if you need transport my preference is Xiaomi M365 Pro ( Pro is VERY important) re: electric engine - moved to esp32 control board and 24v motors - currently experimenting with the software using a small 2 prop toy boat
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Post by Trevor on Dec 18, 2019 12:38:56 GMT
Vasko,
Wonderful project and congratulations on getting the product working and being refined.
A small software addition that may have been mentioned. Distance to go under existing conditions. Distance to go changes depending upon current etc but if distance being travelled is compared to energy consumed and extrapolated to dead battery distance it could display how for to go on this battery.
Great project and a very interesting thread.
Regards
Trevor
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Post by sailbleu on Dec 18, 2019 15:45:34 GMT
Vasco , what would be your take on this combo for the electric outboard ? : For the Atlantic jump next year I need to take a lot of stuff to the boat ( and off !) ( stationed on the Canaries) and therefor was trying to find an excuse to get there by car & ferry in April , return home ( with full car trunk ) in August and finally fly back in December. That way we also have a car for the 3-4 months we spend on the islands . The Lifepo4 unit(s) would swing the balance to the car as it's absolutely prohibited to carry/transport these batteries on a commercial flight. I've also heard/read some horror stories on import to the Canaries and absurd shipping rates. Regards EDIT: any developments / progress on your E-outboard ? The link is to a Electric Bicycle ? - if you need transport my preference is Xiaomi M365 Pro ( Pro is VERY important) re: electric engine - moved to esp32 control board and 24v motors - currently experimenting with the software using a small 2 prop toy boat Don't know what went wrong , is this any better ? www.aliexpress.com/item/33049769245.html?spm=a2g0s.8937460.0.0.5a162e0eFOR5IuRegards
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Post by vasko on Dec 19, 2019 14:20:58 GMT
looks good on description - what you are planing to use it for ?
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Post by vasko on Dec 19, 2019 16:21:07 GMT
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Post by sailbleu on Dec 19, 2019 16:38:21 GMT
looks good on description - what you are planing to use it for ? Hi Vasco , this would be for my electric outboard , that way I could take two heavy (weight) 40 AH lead-acid batteries out of the boat . Regards
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Post by vasko on Dec 19, 2019 17:19:47 GMT
looks good on description - what you are planing to use it for ? Hi Vasco , this would be for my electric outboard , that way I could take two heavy (weight) 40 AH lead-acid batteries out of the boat . Regards for electric outboard looks PERFECT ! you should be able to charge it directly from the engine/solars no need for the external charger take a look at this ones also - they are fine balanced with no BMS need : www.ev-power.eu/LiFeYPO4-batteries-12V-1-1/Winston-12V/
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Post by sailbleu on Dec 24, 2019 11:22:09 GMT
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