Hi folks, This is a *VERY* simple modification I'm making to the PIR sensors on my clocks. I was going to add this as a response to Edwards build thread but thought it might be of more general interest... The mod is simple and I'm finding it quite useful.
I've added a center-off SPDT toggle switch on my Passive IR sensor modules with positions for "On", "PIR controlled" and "Off". The switch allows me to put clocks in my shop space to sleep when I'm working for a time with my back to the clocks... allows me to easily test PIR response on controllers, etc. See the attached photo for the details. Label added for clarity. Note that the PV Electronics PIR module case top piece shown has an extra hole added above the second PIR module trim pot to allow me to adjust the module hold-on time. I've retrofit some of my clocks with HV power supply disable lines under PIR control. These modified clocks need the PIR module to control on-time when activated. I also change a cap from 10 nF to 100 nF on the PIR module I use extending the max hold-on time to about 42 minutes... the cap is connected to pin 4 of the BIS0001 IC. Modules differ in layout so I won't post a photo showing the cap location... The BIS0001 data sheet details the function of this cap. Best regards, Bob -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a107b6ac-9fef-4871-b350-818ddf8772ad%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
