Re: [EVDL] Momentary Pulse Switch
> reed switch with a magnet on the fuel door would do the trick. > > Phil That's a great idea. Setup the reed so the magnet closes it when the door is 1/2 way open. That way you get the 'pulse' without any other components and the reed isn't spending large amounts of time in the magnetic field. Long term exposure to magnetic fields can magnetize reed switches and they will get stuck closed. ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Re: [EVDL] Momentary Pulse Switch
That would be one option. Another option is for the magnet to hold the reed switch closed when the door is closed. Thus your application could turn on the screen if the signal is interrupted and turn off the screen if the circuit is complete. If you are running the signal to an input pin, you just need a current limit resistor and two wires and a 5v source. Phil On Tue, Oct 5, 2021 at 5:08 PM Cor van de Water via EV wrote: > Phil, > You mean when the magnet is mounted in a way that is passes by the > reed relay while opening/closing the fuel door, so that with the door > open and closed, the reed relay does not make contact, only while > opening/closing when the magnet passes by the relay? > Cor. > > On Tue, Oct 5, 2021 at 5:02 PM Phil Hochstetler via EV > wrote: > > > > reed switch with a magnet on the fuel door would do the trick. > > > > Phil > > > > On Tue, Oct 5, 2021 at 2:25 PM Bill Dennis via EV > wrote: > > > > > Thanks. The application is not critical, just turning on a screen. > So I'd > > > like to stick with a simple, non-powered switch. > > > > > > Bill > > > > > > -Original Message- > > > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peri Hartman > via > > > EV > > > Sent: Tuesday, October 5, 2021 3:16 PM > > > To: Electric Vehicle Discussion List > > > Cc: Peri Hartman > > > Subject: Re: [EVDL] Momentary Pulse Switch > > > > > > That sounds like a fail prone solution. If you get noise or somehow > lose > > > a pulse, you'll be out of synch. Wouldn't it be better to simply poll > > > the sensor once in a while ? Or have both: a pulse when the state > > > changes and a method to poll to confirm the state ? > > > > > > Peri > > > > > > << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> > > > > > > -- Original Message -- > > > From: "Bill Dennis via EV" > > > To: "'Electric Vehicle Discussion List'" > > > Cc: "Bill Dennis" > > > Sent: 05-Oct-21 13:16:07 > > > Subject: [EVDL] Momentary Pulse Switch > > > > > > >Can someone recommend a small, momentary pulse switch for 5 volts? > When > > > the car's fuel door is opened, I want a the switch to close to send a > quick > > > pulse, then turn off. Same when the fuel door is closed. The switch > > > doesn't have to handle anything more than milliamps. > > > > > > > >Thanks, > > > > > > > >Bill Dennis > > > > > > > >___ > > > >Address messages to ev@lists.evdl.org > > > >No other addresses in TO and CC fields > > > >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > > >ARCHIVE: http://www.evdl.org/archive/ > > > >LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > > > ___ > > > Address messages to ev@lists.evdl.org > > > No other addresses in TO and CC fields > > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > > ARCHIVE: http://www.evdl.org/archive/ > > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > > > ___ > > > Address messages to ev@lists.evdl.org > > > No other addresses in TO and CC fields > > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > > ARCHIVE: http://www.evdl.org/archive/ > > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > > -- next part -- > > An HTML attachment was scrubbed... > > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20211005/42a14fe4/attachment.html > > > > ___ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/ > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > ___ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20211005/a3bf0937/attachment.html> ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Re: [EVDL] Momentary Pulse Switch
Phil, You mean when the magnet is mounted in a way that is passes by the reed relay while opening/closing the fuel door, so that with the door open and closed, the reed relay does not make contact, only while opening/closing when the magnet passes by the relay? Cor. On Tue, Oct 5, 2021 at 5:02 PM Phil Hochstetler via EV wrote: > > reed switch with a magnet on the fuel door would do the trick. > > Phil > > On Tue, Oct 5, 2021 at 2:25 PM Bill Dennis via EV wrote: > > > Thanks. The application is not critical, just turning on a screen. So I'd > > like to stick with a simple, non-powered switch. > > > > Bill > > > > -Original Message- > > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peri Hartman via > > EV > > Sent: Tuesday, October 5, 2021 3:16 PM > > To: Electric Vehicle Discussion List > > Cc: Peri Hartman > > Subject: Re: [EVDL] Momentary Pulse Switch > > > > That sounds like a fail prone solution. If you get noise or somehow lose > > a pulse, you'll be out of synch. Wouldn't it be better to simply poll > > the sensor once in a while ? Or have both: a pulse when the state > > changes and a method to poll to confirm the state ? > > > > Peri > > > > << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> > > > > -- Original Message -- > > From: "Bill Dennis via EV" > > To: "'Electric Vehicle Discussion List'" > > Cc: "Bill Dennis" > > Sent: 05-Oct-21 13:16:07 > > Subject: [EVDL] Momentary Pulse Switch > > > > >Can someone recommend a small, momentary pulse switch for 5 volts? When > > the car's fuel door is opened, I want a the switch to close to send a quick > > pulse, then turn off. Same when the fuel door is closed. The switch > > doesn't have to handle anything more than milliamps. > > > > > >Thanks, > > > > > >Bill Dennis > > > > > >___ > > >Address messages to ev@lists.evdl.org > > >No other addresses in TO and CC fields > > >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > >ARCHIVE: http://www.evdl.org/archive/ > > >LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > ___ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/ > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > ___ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/ > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > -- next part -- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20211005/42a14fe4/attachment.html> > ___ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Re: [EVDL] Momentary Pulse Switch
reed switch with a magnet on the fuel door would do the trick. Phil On Tue, Oct 5, 2021 at 2:25 PM Bill Dennis via EV wrote: > Thanks. The application is not critical, just turning on a screen. So I'd > like to stick with a simple, non-powered switch. > > Bill > > -Original Message- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peri Hartman via > EV > Sent: Tuesday, October 5, 2021 3:16 PM > To: Electric Vehicle Discussion List > Cc: Peri Hartman > Subject: Re: [EVDL] Momentary Pulse Switch > > That sounds like a fail prone solution. If you get noise or somehow lose > a pulse, you'll be out of synch. Wouldn't it be better to simply poll > the sensor once in a while ? Or have both: a pulse when the state > changes and a method to poll to confirm the state ? > > Peri > > << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> > > -- Original Message -- > From: "Bill Dennis via EV" > To: "'Electric Vehicle Discussion List'" > Cc: "Bill Dennis" > Sent: 05-Oct-21 13:16:07 > Subject: [EVDL] Momentary Pulse Switch > > >Can someone recommend a small, momentary pulse switch for 5 volts? When > the car's fuel door is opened, I want a the switch to close to send a quick > pulse, then turn off. Same when the fuel door is closed. The switch > doesn't have to handle anything more than milliamps. > > > >Thanks, > > > >Bill Dennis > > > >___ > >Address messages to ev@lists.evdl.org > >No other addresses in TO and CC fields > >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >ARCHIVE: http://www.evdl.org/archive/ > >LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > ___ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > ___ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20211005/42a14fe4/attachment.html> ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Re: [EVDL] Momentary Pulse Switch
Thanks. The application is not critical, just turning on a screen. So I'd like to stick with a simple, non-powered switch. Bill -Original Message- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peri Hartman via EV Sent: Tuesday, October 5, 2021 3:16 PM To: Electric Vehicle Discussion List Cc: Peri Hartman Subject: Re: [EVDL] Momentary Pulse Switch That sounds like a fail prone solution. If you get noise or somehow lose a pulse, you'll be out of synch. Wouldn't it be better to simply poll the sensor once in a while ? Or have both: a pulse when the state changes and a method to poll to confirm the state ? Peri << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Bill Dennis via EV" To: "'Electric Vehicle Discussion List'" Cc: "Bill Dennis" Sent: 05-Oct-21 13:16:07 Subject: [EVDL] Momentary Pulse Switch >Can someone recommend a small, momentary pulse switch for 5 volts? When the car's fuel door is opened, I want a the switch to close to send a quick pulse, then turn off. Same when the fuel door is closed. The switch doesn't have to handle anything more than milliamps. > >Thanks, > >Bill Dennis > >___ >Address messages to ev@lists.evdl.org >No other addresses in TO and CC fields >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >ARCHIVE: http://www.evdl.org/archive/ >LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Re: [EVDL] Momentary Pulse Switch
That sounds like a fail prone solution. If you get noise or somehow lose a pulse, you'll be out of synch. Wouldn't it be better to simply poll the sensor once in a while ? Or have both: a pulse when the state changes and a method to poll to confirm the state ? Peri << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Bill Dennis via EV" To: "'Electric Vehicle Discussion List'" Cc: "Bill Dennis" Sent: 05-Oct-21 13:16:07 Subject: [EVDL] Momentary Pulse Switch Can someone recommend a small, momentary pulse switch for 5 volts? When the car's fuel door is opened, I want a the switch to close to send a quick pulse, then turn off. Same when the fuel door is closed. The switch doesn't have to handle anything more than milliamps. Thanks, Bill Dennis ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org ___ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
