Seaperch V1.1 Schematic

Seaperch V1.1 Schematic
Posted by jeff gedgaud at 2011-01-26 23:04:48
I am working with a 4-H group in Clay County Minnesota on a set of 3 Seaperch using the new circuit board. We wired the board according to the picture but there was definitely not enough instructions with the kit in the PDF to get things done correctly. All three of our circuit boards are having problems with the fuses blowing and the cat 5 connector melting wires. Is there a schematic diagram and maybe some better instructions for the cat 5 cable and wiring to help us get this solved.
Re: Seaperch V1.1 Schematic
Posted by Chris Hansen at 2011-01-27 09:06:13
Check out the version of the manual posted here:
http://www.seaperch.org/forum_topic?forum_id=467&topic_id=630
Re: Seaperch V1.1 Schematic
Posted by at 2011-02-07 19:41:59

A new SeaPerch ROV Construction Manual, with detailed instructions and more graphics, should be posted at this webiste soon. 

In the meantime, be sure to check your circuit boards for solder bridges between closely spaced connections.  That is often the reason for blown fuses, and a solder-bridge short-circuit could cause a tether cable wire to become a "fuse" (melt) as well. 

Also, it is helpful to check for short circuits with an ohmmeter or continuity checker (placed across the two power leads that normally connect to the battery) before actually connecting the battery for the first time.

jeff gedgaud wrote on 2011-01-26 23:04:48:
I am working with a 4-H group in Clay County Minnesota on a set of 3 Seaperch using the new circuit board. We wired the board according to the picture but there was definitely not enough instructions with the kit in the PDF to get things done correctly. All three of our circuit boards are having problems with the fuses blowing and the cat 5 connector melting wires. Is there a schematic diagram and maybe some better instructions for the cat 5 cable and wiring to help us get this solved.


Re: Seaperch V1.1 Schematic
Posted by at 2011-02-22 16:20:17

A similar tether-cable short-circuit problem occurred recently during a SeaPerch ROV training session.  The problem was that two adjacent wires had shorted together within the RJ45 connector plug during the crimping process, resulting in a blown fuse whenever one of the horizontal trusters was energized at the same time as one of the vertical thrusters. 

Repair for this problem is easy: simply re-terminate the CAT-5 tether cable with a new RJ45 connector plug (many hardware stores now carry the inexpensive RJ45 plugs, and spares may be provided in the SeaPerch kits).

It is a good idea to inspect the end of the RJ45 plug after crimping it onto the tether cable, before applying power, to confirm that all of the individual wire ends appear to be spaced properly, centered on their respective plug contacts, and that the wires have been properly pierced by the plug contacts. 

Note that there are two types of RJ45 connector plugs, one suited for solid copper wire and another suited for stranded copper wire.  If the plug type used does not match the wire type used, the RJ45 connector plug may not be properly crimped onto the CAT-5 cable.

In the short-circuit problem noted above from the training session, the green and white striped wire had somehow crossed over from the 3rd wire slot to the second slot, just at the front end of the RJ45 connector plug.  So the green and white striped (#3) wire was pierced by both the rear prong of the 3rd contact and the front prong of the 2nd contact, while the orange (#2) wire was pierced only by rear prong of the 2nd contact.  That created a short circuit between the orange wire and the green and white striped wire.


 

jeff gedgaud wrote on 2011-01-26 23:04:48:
I am working with a 4-H group in Clay County Minnesota on a set of 3 Seaperch using the new circuit board. We wired the board according to the picture but there was definitely not enough instructions with the kit in the PDF to get things done correctly. All three of our circuit boards are having problems with the fuses blowing and the cat 5 connector melting wires. Is there a schematic diagram and maybe some better instructions for the cat 5 cable and wiring to help us get this solved.


Re: Seaperch V1.1 Schematic
Posted by Rich at 2011-02-22 16:44:23
Attached is a photo of the miss-crimped RJ45 connector plug, showing the source of the short circuit caused when the #3 wire crossed over to be pierced by the #2 plug contact.
wrote on 2011-02-22 16:20:17:

A similar tether-cable short-circuit problem occurred recently during a SeaPerch ROV training session.  The problem was that two adjacent wires had shorted together within the RJ45 connector plug during the crimping process, resulting in a blown fuse whenever one of the horizontal trusters was energized at the same time as one of the vertical thrusters. 

Repair for this problem is easy: simply re-terminate the CAT-5 tether cable with a new RJ45 connector plug (many hardware stores now carry the inexpensive RJ45 plugs, and spares may be provided in the SeaPerch kits).

It is a good idea to inspect the end of the RJ45 plug after crimping it onto the tether cable, before applying power, to confirm that all of the individual wire ends appear to be spaced properly, centered on their respective plug contacts, and that the wires have been properly pierced by the plug contacts. 

Note that there are two types of RJ45 connector plugs, one suited for solid copper wire and another suited for stranded copper wire.  If the plug type used does not match the wire type used, the RJ45 connector plug may not be properly crimped onto the CAT-5 cable.

In the short-circuit problem noted above from the training session, the green and white striped wire had somehow crossed over from the 3rd wire slot to the second slot, just at the front end of the RJ45 connector plug.  So the green and white striped (#3) wire was pierced by both the rear prong of the 3rd contact and the front prong of the 2nd contact, while the orange (#2) wire was pierced only by rear prong of the 2nd contact.  That created a short circuit between the orange wire and the green and white striped wire.


 

jeff gedgaud wrote on 2011-01-26 23:04:48:
I am working with a 4-H group in Clay County Minnesota on a set of 3 Seaperch using the new circuit board. We wired the board according to the picture but there was definitely not enough instructions with the kit in the PDF to get things done correctly. All three of our circuit boards are having problems with the fuses blowing and the cat 5 connector melting wires. Is there a schematic diagram and maybe some better instructions for the cat 5 cable and wiring to help us get this solved.




Attachments

Icon RJ45 CRIMPING PROBLEM - PINS 2 & 3 SHORTED.jpg  (108KB)
Re: Seaperch V1.1 Schematic
Posted by Rich at 2011-03-10 02:59:43
The attached photo does not fully download for some reason (only 1 KB is downloaded, instead of the 108 KB originally uploaded).  Trying again here....
Rich wrote on 2011-02-22 16:44:23:
Attached is a photo of the miss-crimped RJ45 connector plug, showing the source of the short circuit caused when the #3 wire crossed over to be pierced by the #2 plug contact.
wrote on 2011-02-22 16:20:17:

A similar tether-cable short-circuit problem occurred recently during a SeaPerch ROV training session.  The problem was that two adjacent wires had shorted together within the RJ45 connector plug during the crimping process, resulting in a blown fuse whenever one of the horizontal trusters was energized at the same time as one of the vertical thrusters. 

Repair for this problem is easy: simply re-terminate the CAT-5 tether cable with a new RJ45 connector plug (many hardware stores now carry the inexpensive RJ45 plugs, and spares may be provided in the SeaPerch kits).

It is a good idea to inspect the end of the RJ45 plug after crimping it onto the tether cable, before applying power, to confirm that all of the individual wire ends appear to be spaced properly, centered on their respective plug contacts, and that the wires have been properly pierced by the plug contacts. 

Note that there are two types of RJ45 connector plugs, one suited for solid copper wire and another suited for stranded copper wire.  If the plug type used does not match the wire type used, the RJ45 connector plug may not be properly crimped onto the CAT-5 cable.

In the short-circuit problem noted above from the training session, the green and white striped wire had somehow crossed over from the 3rd wire slot to the second slot, just at the front end of the RJ45 connector plug.  So the green and white striped (#3) wire was pierced by both the rear prong of the 3rd contact and the front prong of the 2nd contact, while the orange (#2) wire was pierced only by rear prong of the 2nd contact.  That created a short circuit between the orange wire and the green and white striped wire.


 

jeff gedgaud wrote on 2011-01-26 23:04:48:
I am working with a 4-H group in Clay County Minnesota on a set of 3 Seaperch using the new circuit board. We wired the board according to the picture but there was definitely not enough instructions with the kit in the PDF to get things done correctly. All three of our circuit boards are having problems with the fuses blowing and the cat 5 connector melting wires. Is there a schematic diagram and maybe some better instructions for the cat 5 cable and wiring to help us get this solved.






Attachments

Icon Tether Cable Short Circuit Example.ppt  (242KB)
Here is the Seaperch PCB V1.1 Schematic Diagram
Posted by Rich at 2011-08-17 15:22:38

Attachments

Icon PCB CONTROL BOX SCHEMATIC - V1.1.JPG  (104KB)
Re: Seaperch V1.1 Schematic
Posted by Roy Randolph at 2012-02-21 13:31:02
Looking at the schematic that was presented, Where are the capacitors? I don't see them in this schematic.
jeff gedgaud wrote on 2011-01-26 23:04:48:
I am working with a 4-H group in Clay County Minnesota on a set of 3 Seaperch using the new circuit board. We wired the board according to the picture but there was definitely not enough instructions with the kit in the PDF to get things done correctly. All three of our circuit boards are having problems with the fuses blowing and the cat 5 connector melting wires. Is there a schematic diagram and maybe some better instructions for the cat 5 cable and wiring to help us get this solved.


Re: Seaperch V1.1 Schematic
Posted by Rich at 2012-03-02 21:56:14

For SeaPerch ROV builders, the presence of printed circuit board (PCB) pads and markings for "C1" and "C2" can be a bit confusing.  There are no capacitors in the schematic diagram because no capacitors are used in the standard SeaPerch ROV control box circuitry. 

The schematic is intended to show how the SeaPerch ROV's electrical components are interconnected, using the PCB's metal traces (in place of wires, as in a hand-wired control box), but it does not show a few unused pads and traces that happen to be on the actual circuit boards provided.  In industry, PCBs used in electronic devices frequently have spaces for extra components that may not be used in some applications.  That's the case here as well.

Fortunately, the SeaPerch ROV Construction Manual can help to clarify the situation, as its parts lists and instructions make no mention of capacitors, and there are no capacitors included in the standard SeaPerch ROV kit.    

Re: Seaperch V1.1 Schematic
Posted by Arianna Christian at 2012-11-07 05:42:01
I can not understand your query. please explain me in brief i can handle your problem.

Android jelly bean application Development

Re: Seaperch V1.1 Schematic
Posted by renee moreset at 2015-04-01 05:43:41

My friend  that is working from http://eatmywords.com/, also referred me to this, and he really adviced me that among other good brand name, this one in seaperch is the best.

Please report website issues to info@seaperch.org

The SeaPerch logo is a Registered Trademark of the AUVSI Foundation.

Terms of Use & Privacy | Copyright 2013. All Rights Reserved.