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by johndough
Thu Apr 03, 2014 5:20 pm
Forum: Off topic discussion
Topic: VibeWrite
Replies: 2
Views: 915

Re: VibeWrite

thanks.
by johndough
Thu Apr 03, 2014 5:01 pm
Forum: Automation, sensing and robotics
Topic: Actuator motor and board
Replies: 1
Views: 708

Re: Actuator motor and board

Hiya

Most obvious is a timed water sprinkler, Automated Lawn watering system.

Ambitious - connected in place of a door handle to open when you approach, (gearing or travel limit need attention.)
by johndough
Thu Mar 27, 2014 10:50 am
Forum: General discussion
Topic: Solenoid Locking Project - HELP
Replies: 11
Views: 4941

Re: Solenoid Locking Project - HELP

After a lot more research, it turns out that some relays are simply configured for AC and some aren't. I have no idea why the DC ones are only available from china and the USA though. I'm awaiting a response concerning the ampere input for the relay. Hi All the relay coils will work on AC or DC, ho...
by johndough
Wed Mar 26, 2014 9:37 am
Forum: Other projects
Topic: Relay for motorized valve
Replies: 13
Views: 3007

Re: Relay for motorized valve

Hello Johndough -- Thanks for you reply. I am planning to use a 12V DC power supply. Also, it is a 3 wire valve. Here is a little diagram and some instructions: Thanks for any help. Hi The instructions are magic. RD connects to the POSITIVE. BK and GR are NEGATIVE If the GR is negative and SW close...
by johndough
Tue Mar 25, 2014 4:34 pm
Forum: Other projects
Topic: Relay for motorized valve
Replies: 13
Views: 3007

Re: Relay for motorized valve

Hi This crude diagram will show that applying a live to one wire on the motor how it would track through the capacitor and make the other side 'live' as well. Therefore relays with physical as well as electrical isolation are my preferred option, rather than a SSD which simplifies connections. Motor...
by johndough
Tue Mar 25, 2014 3:55 pm
Forum: Other projects
Topic: Relay for motorized valve
Replies: 13
Views: 3007

Re: Relay for motorized valve

Hello everybody -- I am new to raspberry pi (absolutely loving it), and electronics. I think I am starting to understand little better but still needs a lot of validation. I write programs for living. I am also a homebrewer and wanted to utilize my newfound toy -- Raspberry Pi -- for my automated b...
by johndough
Tue Mar 25, 2014 3:43 pm
Forum: Automation, sensing and robotics
Topic: Linear Actuator for Door Lock Demo
Replies: 30
Views: 13332

Re: Linear Actuator for Door Lock Demo

use car lock door motor (door lock actuator), price $5 http://www.ebay.com/bhp/universal-door-lock-actuator +1 for that. Hi well the solenoid in the data sheet had a spring so it only needs to be energised for a second to release/actuate. it don't need reversal of polarity. so connect one wire to g...
by johndough
Mon Mar 24, 2014 10:49 am
Forum: Off topic discussion
Topic: VibeWrite
Replies: 2
Views: 915

VibeWrite

Hi

Hope this is a good place to post arf arf.

VibeWrite

A vibrating pen, a PI, a Laptop.
Lots of clever software and 'spacial awareness'.

Educational tool, soon to be seen on these shores.
by johndough
Mon Mar 24, 2014 10:21 am
Forum: Networking and servers
Topic: Remote Connections, VPNs and Proxies
Replies: 25
Views: 31118

Re: Remote Connections, VPNs and Proxies

Hi

Perhaps you mean

NAT & PAT

Network Address Translation
Port Address Translation

for assigning internet packets.
by johndough
Sat Mar 22, 2014 11:59 am
Forum: Beginners
Topic: Cleaning up double OS partition mess
Replies: 8
Views: 1247

Re: Cleaning up double OS partition mess

### Thank you. I believe that wouldn't change anything about the problem I had, though - the boot partition cannot be moved on the SD card. By no means am I a specialist, but I read on a Gentoo board somewhere (and will go crazy and assume the concept is the same here) that the system expects the bo...
by johndough
Fri Mar 21, 2014 10:39 am
Forum: Beginners
Topic: Cleaning up double OS partition mess
Replies: 8
Views: 1247

Re: Cleaning up double OS partition mess

SteveB wrote:If there is no other way of getting to what I want (by now I'm "invested") I will definitely look into that, thanks!

Hi

Not sure of your circumstances, but my preferred choice is XP and Paragon Partition manager 2014, free for personal use.

This will make, resize etc on your SD card, simples.
by johndough
Tue Mar 18, 2014 10:28 am
Forum: Graphics, sound and multimedia
Topic: Samsung Display
Replies: 3
Views: 2817

Re: Samsung Display

Hi Thanks for that. I have looked around and there is quite a long PCB directly attached to the back of the panel, Fabrique en Chine. The ribbon cable cable coming from it seems to correspond with 19 Vss Ground 18 ClkIN+ LVDS Differential Clock INPUT Positive 17 ClkIN- LVDS Differential Clock INPUT ...
by johndough
Mon Mar 17, 2014 5:46 pm
Forum: Graphics, sound and multimedia
Topic: Samsung Display
Replies: 3
Views: 2817

Samsung Display

Hi I have a Samsung LTN154X3-L09 LCD screen from a Defunct Dell laptop. Also found a 30 page 'datasheet' for LTN154X3-L01. So can I expect to be able to use it with my Pi? The motherboard is showing as a dead short tripping out 3 different power supplies, with most things removed, even a CPU. So cou...
by johndough
Mon Mar 17, 2014 8:59 am
Forum: Troubleshooting
Topic: Raspbian takes up all my sd card and can not install anythin
Replies: 11
Views: 1562

Re: Raspbian takes up all my sd card and can not install any

[quote=]
Can I do that with Raspbian or a Windows utility?[/quote]

Hi

I use Paragon Partition Manager 2014 to view and adjust the partitions. Like shrinking the boot sector area slightly.
by johndough
Sun Mar 16, 2014 10:33 am
Forum: Automation, sensing and robotics
Topic: Linear Actuator for Door Lock Demo
Replies: 30
Views: 13332

Re: Linear Actuator for Door Lock Demo

Yes I know that but I don't want just the linear motion of the nut alone. I want some type of motion in which a cylindrical pipe kind of thing also moves, like the latch of a door. Hi Well if you want to unlock a door, buy a cheap and large door lock. Put a small motor and cam in place of the key. ...
by johndough
Sat Mar 15, 2014 6:36 pm
Forum: Automation, sensing and robotics
Topic: Linear Actuator for Door Lock Demo
Replies: 30
Views: 13332

Re: Linear Actuator for Door Lock Demo

The arrangement that I made is here: Linear Actuator 4.JPG How do I get a linear motion using this? I have to fix both ends. The nut will move linearly in that case. I want a little more clear and observable motion. Just the nut moving isn't good enough for me. Hi Mount the motor. The output shaft ...
by johndough
Sat Mar 15, 2014 8:20 am
Forum: Automation, sensing and robotics
Topic: Driving a DC to DC SSR for Solenoid Valve-Voltage leak issue
Replies: 24
Views: 4122

Re: Driving a DC to DC SSR for Solenoid Valve-Voltage leak i

[quote= I did a PLC control on a paint chop, The omron relay didn't last more than 3 month. I change them for SSR. They were all operational after 10 years of usage.[/quote] Hi Mechanical Relays etc. I used to build control panels, and the guarantee was for 1 year or 100,00 cycles on an industrial d...
by johndough
Fri Mar 14, 2014 1:17 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: [Announcement] New USB chip-solution
Replies: 12
Views: 2793

Re: [Announcement] New USB chip-solution

Hiya

Certainly an impressive spec, with built in simplicity.

A winner in my book.
by johndough
Fri Mar 14, 2014 1:11 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15562

Re: Relay to Switch 220v

Pfiew, thanks for the answers, but the most of these info sounds like chinese for me. I thought this would be a simple thing to test with the Raspberry Pi. I fear that I better begin to learn more basics off electronics. Hiya Mine isn't electronics, it's more choo choo trains. The electricity goes ...
by johndough
Thu Mar 13, 2014 3:03 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15562

Re: Relay to Switch 220v

Hiya Still with me? Really tricky step/concept next. Local control of each motor, when priority permits. Dealing with just Motor 1, which I expect to have 4 wires. A Green/Yellow for earth which connects to the common earthing area, likewise a BLUE wire that connects to the common Neutral area. The ...
by johndough
Wed Mar 12, 2014 3:23 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15562

Re: Relay to Switch 220v

NEXT in this jigsaw of dis-jointed jottings. RLY 1 terminal 4 (12) to Relay 2 terminal 1 (11) RLY 2 terminal 4 (12) to terminal strip 11 RLY 1 terminal 5 (22) to Relay 2 terminal 6 (21) RLY 2 terminal 5 (22) to terminal strip14 RLY 1 terminal 8 (32) to Relay 2 terminal 11 (31) RLY 2 terminal 8 (32) ...
by johndough
Wed Mar 12, 2014 3:03 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15562

Re: Relay to Switch 220v

Hi Step one is to mount the bases and a terminal block, (separate block for relay coils if wanted). As this is daisy chained the assumption is for raised/retracted to have priority as for an external awning. The supply connects to terminals 1 for an EARTH, 8 for the incoming NEUTRAL and 9 for the in...
by johndough
Wed Mar 12, 2014 2:46 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15562

Re: Relay to Switch 220v

Why endure the clicky-clack of relays? Get a solid state relay. Why? 1 - opto isolated 2 - silent 3 - interfaces directly to the 3 volt gpio ports 4 - Handles 240+ volts and up to 40 amps. Sometimes on resistance and heat dissipation are issues. If cycle time is slow, I still prefer mechanicals for...
by johndough
Wed Mar 12, 2014 12:39 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15562

Re: Relay to Switch 220v

Hi Any more info on the make or type of shutter please, and how its currently controlled. Meanwhile..... TRIPLE POLE Motor Relay – DAISY CHAINED with LOCAL Switching Control 2 off FINDER - 60.13.9.012.0040 - RELAY, 3PCO, 10A, 12VDC 2 off FINDER - 90.27SMA - SOCKET, DIN/SURFACE, 11 PIN, RELAY Triple ...

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