RMweb Gold 5BarVT Posted August 14, 2021 RMweb Gold Share Posted August 14, 2021 Consequence is also a factor. If stuffing the wrong supply in causes (expensive) damage then physical difference is more of a requirement, if it ‘just doesn’t work’ then ‘so what’. (Says he who has destroyed boards by stuffing 12V into 5V I/O connectors etc etc.) Paul. 1 3 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 14, 2021 Author RMweb Gold Share Posted August 14, 2021 More good progress today, two more Cobalts added & wired in. I've also sorted the wiring so the 15-pin D connector is now at the proper r/h end. Also had a delivery of the 9-pin D's, so the Yard Control Panel can be completed, the double 8-wire cable to the baseboard can be made and the plugs for the two Walkabout controllers changed to suit. 7 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 15, 2021 Author RMweb Gold Share Posted August 15, 2021 The Yard panel is now finished, and a 4th Cobalt is in place, but not wired up. Not long before testing can take place. 12 2 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 15, 2021 Author RMweb Gold Share Posted August 15, 2021 Photos of the ends of the control panel: 12 7 Link to post Share on other sites More sharing options...
Andrew P Posted August 15, 2021 Share Posted August 15, 2021 Some really neat stuff going on here Stubby. 4 1 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 16, 2021 Author RMweb Gold Share Posted August 16, 2021 In order to document the cabling, I've created a little spreadsheet table, which I've printed off and can manually update as each wire is connected. The two bold boxes represent the two 9-pin D connections on the panel, then the Pin will be the 15-pin D connector on the layout. ('Baseboard' above is the name of that end of the panel). Meanwhile, I've been testing the motors with a 9v battery, as suggested. This is strong enough to drive 2 motors at once, and doesn't cause over running over the motor when the movement is complete. So I'll test the actual voltage from the 12v DC output from the H&M Clipper. This same supply is currently also used for the uncouplers, so I might need either a separate supply, or some sort of voltage step-down. 7 1 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 16, 2021 Author RMweb Gold Share Posted August 16, 2021 Meanwhile, there is good news and not-so-good news. The good news: My O2 and grey Road van have been despatched by KMRC, so I would expect delivery tomorrow morning. The not-so-good news: Due to a member of staff testing positive last week at the shop where Son #1 volunteers, Son #1 will not be at the shop tomorrow morning , so SWMBO will now not be in town when the O2 and Road Van are to be delivered... 12 Link to post Share on other sites More sharing options...
RMweb Gold NHY 581 Posted August 16, 2021 RMweb Gold Share Posted August 16, 2021 1 hour ago, Stubby47 said: In order to document the cabling, I've created a little spreadsheet table, which I've printed off and can manually update as each wire is connected. The two bold boxes represent the two 9-pin D connections on the panel, then the Pin will be the 15-pin D connector on the layout. ('Baseboard' above is the name of that end of the panel). Meanwhile, I've been testing the motors with a 9v battery, as suggested. This is strong enough to drive 2 motors at once, and doesn't cause over running over the motor when the movement is complete. So I'll test the actual voltage from the 12v DC output from the H&M Clipper. This same supply is currently also used for the uncouplers, so I might need either a separate supply, or some sort of voltage step-down. Nope. Don't get it. 3 Link to post Share on other sites More sharing options...
RMweb Gold NHY 581 Posted August 16, 2021 RMweb Gold Share Posted August 16, 2021 15 minutes ago, Stubby47 said: Meanwhile, there is good news and not-so-good news. The good news: My O2 and grey Road van have been despatched by KMRC, so I would expect delivery tomorrow morning. The not-so-good news: Due to a member of staff testing positive last week at the shop where Son #1 volunteers, Son #1 will not be at the shop tomorrow morning , so SWMBO will now not be in town when the O2 and Road Van are to be delivered... Go sick. 1 3 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 16, 2021 Author RMweb Gold Share Posted August 16, 2021 1 minute ago, NHY 581 said: Nope. Don't get it. Just as long as I do... 1 3 1 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 16, 2021 Author RMweb Gold Share Posted August 16, 2021 (edited) 2 minutes ago, NHY 581 said: Go sick. I'm already WFH, just that I can't sneak it in as SWMBO will get to the door first... Edited August 16, 2021 by Stubby47 2 1 2 Link to post Share on other sites More sharing options...
RMweb Gold NHY 581 Posted August 16, 2021 RMweb Gold Share Posted August 16, 2021 I have that issue. When my 03 arrived, The Memsahib was out. Result !! Unboxed, stored and box disposed off. Memsahib arrived home. Noticed the door knocker had moved ( !!!!) and asked what I'd had delivered as the Postman wouldn't need to knock for a letter.............. 12 4 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 16, 2021 Author RMweb Gold Share Posted August 16, 2021 (edited) Following @St Enodoc's idea of a voltage regulator for his uncouplers, I've ordered these from Amazon: https://www.amazon.co.uk/gp/product/B08DKQB1L6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I can install one in each control panel, though I might knock out a couple more cable holes to help with cooling. This is interesting (and a bit scary!) https://www.themodelrailwayclub.org/controlling-electromagnetic-uncouplers/ Edited August 16, 2021 by Stubby47 3 1 2 Link to post Share on other sites More sharing options...
bgman Posted August 16, 2021 Share Posted August 16, 2021 2 hours ago, NHY 581 said: I have that issue. When my 03 arrived, The Memsahib was out. Result !! Unboxed, stored and box disposed off. Memsahib arrived home. Noticed the door knocker had moved ( !!!!) and asked what I'd had delivered as the Postman wouldn't need to knock for a letter.............. Wasn't it a windy day Rob, that might have shifted the knocker ! 3 1 Link to post Share on other sites More sharing options...
RMweb Gold Graham T Posted August 16, 2021 RMweb Gold Share Posted August 16, 2021 2 hours ago, NHY 581 said: I have that issue. When my 03 arrived, The Memsahib was out. Result !! Unboxed, stored and box disposed off. Memsahib arrived home. Noticed the door knocker had moved ( !!!!) and asked what I'd had delivered as the Postman wouldn't need to knock for a letter.............. The female of the species truly is deadlier than the male! 1 3 Link to post Share on other sites More sharing options...
RMweb Premium 2ManySpams Posted August 16, 2021 RMweb Premium Share Posted August 16, 2021 4 hours ago, Stubby47 said: I'm already WFH, just that I can't sneak it in as SWMBO will get to the door first... Nail the door shut? 1 2 1 1 Link to post Share on other sites More sharing options...
Andrew P Posted August 16, 2021 Share Posted August 16, 2021 6 hours ago, Stubby47 said: I'm already WFH, just that I can't sneak it in as SWMBO will get to the door first... Mow the front lawn,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,s l o w l e y every day 3 4 3 Link to post Share on other sites More sharing options...
RMweb Premium 2ManySpams Posted August 16, 2021 RMweb Premium Share Posted August 16, 2021 6 hours ago, Stubby47 said: This is interesting (and a bit scary!) https://www.themodelrailwayclub.org/controlling-electromagnetic-uncouplers/ Nothing like over complicating matters. I like the response in the comments section saying that a fixed magnet raised and lowered on a servo is an easier solution. 5 3 2 Link to post Share on other sites More sharing options...
RMweb Premium St Enodoc Posted August 16, 2021 RMweb Premium Share Posted August 16, 2021 8 hours ago, Stubby47 said: Following @St Enodoc's idea of a voltage regulator for his uncouplers, I've ordered these from Amazon: https://www.amazon.co.uk/gp/product/B08DKQB1L6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I can install one in each control panel, though I might knock out a couple more cable holes to help with cooling. This is interesting (and a bit scary!) https://www.themodelrailwayclub.org/controlling-electromagnetic-uncouplers/ That looks far too complicated. Rule 1 - don't use cheap push-buttons. Either the contacts will weld together (bad) or the buttons will physically fall apart (not quite so bad). Used biased (sprung) toggle switches. Rule 2 - connect a diode across the coli in the reverse direction to the normal current flow. This will reduce or even eliminate any arcing at the switch contacts when you turn the uncoupler off. 1 3 8 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 17, 2021 Author RMweb Gold Share Posted August 17, 2021 (edited) I have got some biased (on)-off-(on) DPDT switches, but as they look the same as the point and loop isolation switches I opted for the push button ones. I don't have any diodes. Apart from one push button switch breaking on TF, I've not had any problems (so far). Edited August 17, 2021 by Stubby47 1 3 Link to post Share on other sites More sharing options...
RMweb Gold 5BarVT Posted August 17, 2021 RMweb Gold Share Posted August 17, 2021 7 minutes ago, Stubby47 said: I don't have any diodes Strongly recommend you get some! I know they said 1N40xx series weren’t fully effective but they are cheap and taking out 90% of the voltage surge will significantly protect switches. I would go for 1N4002 or 4003 for the increased reverse voltage protection. A solution for toggle switches is to get coloured covers for the uncouplers. Yellow ones are available! And one final thought: the scare parts of the article were based on multiple (and possibly less skilled) operators being less aware of the risks and thus more likely to leave on for a longer time. HTH, Paul. 2 1 1 2 1 Link to post Share on other sites More sharing options...
37Oban Posted August 17, 2021 Share Posted August 17, 2021 19 hours ago, Stubby47 said: This is interesting (and a bit scary!) https://www.themodelrailwayclub.org/controlling-electromagnetic-uncouplers/ Now, I'm not anywhere near being an electronics guru, and I hate wiring with a passion, but it makes me wonder why a timed auto cut-off circuit wasn't used? Roja 1 1 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 17, 2021 Author RMweb Gold Share Posted August 17, 2021 Meanwhile, Operation Sneak-it-in has both succeeded and failed.... Failed, as due to being in a Teams meeting I was unable to intercept the Postman. Succeeded, as the package was left downstairs for me with no questions asked. And the O2 looks very good, without any warped running plates. 5 4 Link to post Share on other sites More sharing options...
bgman Posted August 17, 2021 Share Posted August 17, 2021 5 minutes ago, Stubby47 said: Operation Sneak-it-in You'll be asked to be in the next James Bond film soon ! 6 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted August 17, 2021 Author RMweb Gold Share Posted August 17, 2021 6 hours ago, bgman said: You'll be asked to be in the next James Bond film soon ! Dr Kananga, The Solar Plexus voltage reduction units have arrived, ready for Operation Main Strike. 1 5 Link to post Share on other sites More sharing options...
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