---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 06/05/17: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:18 AM - AW: AW: Automatic header tank filling (Peter Sokolowski) 2. 12:17 PM - Re: AW: AW: Automatic header tank filling (nuckollsr) 3. 05:07 PM - Schematic Diagram Software (Bill Steer) 4. 06:07 PM - Re: Schematic Diagram Software (Robert L. Nuckolls, III) 5. 11:13 PM - Re: Schematic Diagram Software (Rob Turk) ________________________________ Message 1 _____________________________________ Time: 09:18:24 AM PST US From: Peter Sokolowski Subject: AW: AW: AeroElectric-List: Automatic header tank filling Thanks Bob, I will go first with the analog comparator approach - having the relevant voltages confirmed I will get the c ordered. BTW - what would be the price ? Looking on the schematic - at least to the comparator one - there is no hysteresis - right ? Iaw - the pump runs "all the time" the full limit is not reached. Will the c one have such a hysteresis in the SW ? Br Peter -----Ursprngliche Nachricht----- Von: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] Im Auftrag von C&K Gesendet: Sonntag, 4. Juni 2017 18:18 An: aeroelectric-list@matronics.com Betreff: Re: AW: AeroElectric-List: Automatic header tank filling That surprises me. Even in my high wing aircraft the header tank vents back to a main tank in the wing Ken On 04/06/2017 9:21 AM, Robert L. Nuckolls, III wrote: > At 09:01 PM 6/2/2017, you wrote: >>> >>> Also there is a drain (standard for Lancair header tanks) in case >>> you overfill it just goes overboard. >>> >>> Would you mind sharing the schematic you already invented ? >>> >>> Thanks in advance, >>> >>> Peter >> > > Here's a couple of approaches to a fuel > transfer controller applicable to your > project. > > http://tinyurl.com/yc4754vw > > The first page shows ship's wiring for > power, switch, relay, pump and over-fill > warning light. > > The second page illustrates a micro-controller > based control module. Input signal voltage > from the fuel gate is watched. The pump and > warning light are activated based on numbers > stored in the uC memory at the time software > is loaded to the controller. This is the > lowest parts count approach and very compact. > All the electronics would fit into the backshell > of a 15-pin d-sub connector. > > The third page illustrates an analog comparator > approach to the same task. Potentiometers allow > you to 'tune' the switch points for pump operation > and illumination of the warning light. > > In both cases, the warning light can be left > out if deemed unnecessary. Page 3 lends itself > to a DIY approach. If fuel gage voltages are > known, the uC approach would also work as a DIY > project. We can supply the uC with the target > voltages in situ. Those values are easily altered > as experience dictates. Just order up another chip > with revised calibration. The 'bad' chip isn't even > worth returning . . . they're about 80 cents. > > > Bob . . . > ________________________________ Message 2 _____________________________________ Time: 12:17:35 PM PST US Subject: AeroElectric-List: Re: AW: AW: Automatic header tank filling From: "nuckollsr" You can have the uC . . . need feedback on your success/problems. There is hysteresis on both comparators. Those values are not calculated . . . I can expand on that now that I know which way you want to go. It would help to know the target switching voltages . . . does your cap-fuel gage span 0-5 volts for empty-full? That uC version is compatible with my 'do-lots' board layout designed to fit into the d-sub back shell. http://www.aeroelectric.com/Catalog/AEC/9024/9024_FOOTPRINT.pdf So once you've deduce the voltages for fill and overfill, we'll be able to supply a ready-to-install control module . . . you can be the beta-test airframe. My office computer boot-drive went TU this morning. I'm scrambling around to be a new drive installed . . . old COA is illegible . . . will have to order a new one off eBay . . . at the same time, Nvidia ap on Dr. Dee's computer refuses to talk to the third monitor . . . #$%#$*!!! . . . ain't 'lectronics wunderful? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=469830#469830 ________________________________ Message 3 _____________________________________ Time: 05:07:12 PM PST US From: Bill Steer Subject: AeroElectric-List: Schematic Diagram Software I'm making some changes to the wiring in my Zenith 601HD, so need to update the schematic diagram, which is similar to those in the back of the Aeroelectric book. I have a .sch file, created in 2007, that contains the original schematic diagram. Unfortunately, after two changes of computers, the application that created that file has been lost. What's worse, I don't remember the name of that application. I've looked online for appropriate applications, and even tried a few of them (e.g., KiCAD, EAGLE), but none of them recognizes the file. Can anybody give me any pointers? Thanks very much. Bill ________________________________ Message 4 _____________________________________ Time: 06:07:10 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Schematic Diagram Software At 07:06 PM 6/5/2017, you wrote: > >I'm making some changes to the wiring in my Zenith 601HD, so need to >update the schematic diagram, which is similar to those in the back >of the Aeroelectric book. I have a .sch file, created in 2007, that >contains the original schematic diagram. Unfortunately, after two >changes of computers, the application that created that file has >been lost. What's worse, I don't remember the name of that application. > >I've looked online for appropriate applications, and even tried a >few of them (e.g., KiCAD, EAGLE), but none of them recognizes the file. > >Can anybody give me any pointers? Thanks very much. I think the .sch extension is unique to ExperessPCB software. https://www.expresspcb.com/free-cad-software/ Bob . . . ________________________________ Message 5 _____________________________________ Time: 11:13:32 PM PST US Subject: Re: AeroElectric-List: Schematic Diagram Software From: Rob Turk There's another schematic drawing program using .sch as extension. Abacom sPlan: http://www.abacom-online.de/uk/html/produkte.html On 6/6/2017 3:05 AM, Robert L. Nuckolls, III wrote: > At 07:06 PM 6/5/2017, you wrote: >> >> >> I'm making some changes to the wiring in my Zenith 601HD, so need to >> update the schematic diagram, which is similar to those in the back >> of the Aeroelectric book. I have a .sch file, created in 2007, that >> contains the original schematic diagram. Unfortunately, after two >> changes of computers, the application that created that file has been >> lost. What's worse, I don't remember the name of that application. >> >> I've looked online for appropriate applications, and even tried a few >> of them (e.g., KiCAD, EAGLE), but none of them recognizes the file. >> >> Can anybody give me any pointers? Thanks very much. > > I think the .sch extension is unique to > ExperessPCB software. > > > https://www.expresspcb.com/free-cad-software/ > > > > > Bob . . . > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.