Search found 383 matches
- Dec 29th, 2015, 6:15 pm
- Forum: Control Systems and Tethers
- Topic: Neub questions
- Replies: 10
- Views: 5969
Re: Neub questions
On the L293 shield, remove the jumper marked "PWR". The circuit diagram that I referred to shows that leaving this in will apply your motor supply (the terminal block next to the jumper) to the Arduino, thus destroying the Arduino. I used a 9 volt plugpack as supply. Double-check the polar...
- Dec 29th, 2015, 4:52 pm
- Forum: Control Systems and Tethers
- Topic: Neub questions
- Replies: 10
- Views: 5969
Re: Neub questions
Hi SSN626B and Rich. Good point about the seals, though I must say I've never used bilge pump cartridges, just brushless motors. Nick's code may well be very good, but for those who want to learn for themselves, and start with something more basic, I don't think it is too difficult to send 4 numbers...
- Dec 28th, 2015, 3:43 pm
- Forum: Control Systems and Tethers
- Topic: Neub questions
- Replies: 10
- Views: 5969
Re: Neub questions
Checked out your site. I like the look of those enclosures, and that 5 amp hour battery. Simpler than Li-Po. Make sure that the current rating of your motor drive board is up to running whatever pump motors you have. If not high enough, maybe use lower voltage supply to reduce the current, or use so...
- Dec 27th, 2015, 4:38 pm
- Forum: Control Systems and Tethers
- Topic: Arduino and Fiber Optic Communication?
- Replies: 2
- Views: 3336
Re: Arduino and Fiber Optic Communication?
"resident geniuses" dunno about that :lol: In summary, there are 2 converters: One type converts separate control and video data and sends that over the FO and converts back again at the other end. These are primarily used in CCTV applications, but ideal for ROVers. The cheaper sets, which...
- Dec 27th, 2015, 3:50 pm
- Forum: Control Systems and Tethers
- Topic: Neub questions
- Replies: 10
- Views: 5969
Re: Neub questions
Hi Rich. Just reading "N.C. Machinist" suggests to me that you have much in your favour for building an Arduino-based ROV. Motors: Personally i would say that brushless motors and controllers (ESCs) are the go, provided you have a lathe handy to make oil-filled pressure-compensated motor h...
- Dec 26th, 2015, 4:22 pm
- Forum: Control Systems and Tethers
- Topic: Topside Battery
- Replies: 12
- Views: 10070
Re: Topside Battery
Unless the hobbyist is an electrical or electronics engineer or technician possessing appropriate design expertise then mains power tethers are not practical. To be safe enough to use they would simply cost too much by the the time the safety mechanisms are designed, built, tested and implemented. D...
- Dec 26th, 2015, 4:04 pm
- Forum: Thrusters
- Topic: Can a brushless DC motor run on lead acid battery?
- Replies: 3
- Views: 6376
Re: Can a brushless DC motor run on lead acid battery?
Hi Randy. I have run ESC and motor off a 12 volt lead-acid battery on the bench. No worries if the ESC is designed to handle the voltage. Motors and ESCs usually have the specs listed. Refer links. I do not like lead-acid for ROV because of the potential for explosive gas build-up inside a sealed hu...
- Dec 17th, 2015, 4:06 pm
- Forum: Frames, Hulls, & Bouyancy
- Topic: Why so few hydrodynamic hulls?
- Replies: 2
- Views: 3829
Re: Why so few hydrodynamic hulls?
Welcome johzac. Yes, what Jaman42 said, but streamlined ROV would be good in strong currents. Additionally, the "wet compartments" inside the streamlined shroud contribute mass to the vehicle. This means more inertia, and more power to overcome it, and sluggish control response. Filling th...
- Dec 15th, 2015, 3:25 pm
- Forum: Introductions
- Topic: Hello Everyone
- Replies: 1
- Views: 2057
Re: Hello Everyone
Welcome MadROVpilot. Your dive experience will be invaluable in your new venture, and to the forum as well.
- Dec 6th, 2015, 2:34 pm
- Forum: Electronics
- Topic: Using a Load Cell as a Depth Sensor
- Replies: 12
- Views: 22227
Re: Using a Load Cell as a Depth Sensor
If you think corrosion may be a problem then a small oil bladder will stop water getting in. http://www.homebuiltrovs.com/rovforum/viewtopic.php?f=16&t=879&p=7348&hilit=glove#p7348 Attaching the finger to the sensor could be a bit tricky. Maybe glue a small diameter tube onto the outside...