tag:blogger.com,1999:blog-4359208343555922820.post5094488931671138728..comments2024-01-12T06:26:30.504+00:00Comments on Random Tech Stuff: Lidl PIR nightlight teardown and hackJoeDhttp://www.blogger.com/profile/02413638198679968289noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-4359208343555922820.post-15858321496779825302017-01-07T02:49:49.596+00:002017-01-07T02:49:49.596+00:00Here is the datasheet for the HS0001. It's not...Here is the datasheet for the HS0001. It's not in English:<br /><br />http://www.icpdf.com/icpdf_datasheet_6_datasheet/HS0001_pdf_6921485/Anonymoushttps://www.blogger.com/profile/13950935654082454353noreply@blogger.comtag:blogger.com,1999:blog-4359208343555922820.post-10974256976897847382016-12-04T12:22:55.474+00:002016-12-04T12:22:55.474+00:00By the way: I've subsequently become aware of ...By the way: I've subsequently become aware of very low cost PIR modules eg HC-SR501 (typically costing in the order of $1 / €1 from EBay). I believe it uses the same IC and schematic as described in this blog post. I've put relevant docs and datasheets here: https://github.com/jdesbonnet/HC-SR501Joe Desbonnethttps://www.blogger.com/profile/01861293299381288570noreply@blogger.comtag:blogger.com,1999:blog-4359208343555922820.post-59170311867769629732016-12-04T11:04:18.955+00:002016-12-04T11:04:18.955+00:00Thnx ! So ... can I add a 12Volt (8 batteries x 1,...Thnx ! So ... can I add a 12Volt (8 batteries x 1,5 Volt) to the board?<br />And attach a <a href="https://nl.aliexpress.com/item/5m-5050-RGB-led-strip-fita-de-led-tape-150-LEDs-diode-feed-tiras-lampada-non/32501443935.html>LED strip</a> to it?Harryhttps://www.blogger.com/profile/12952145302065892538noreply@blogger.comtag:blogger.com,1999:blog-4359208343555922820.post-44471865429134972382016-01-10T16:20:40.695+00:002016-01-10T16:20:40.695+00:00Typically you would just connect a Digital Input t...Typically you would just connect a Digital Input to Pin 2/VO (Output). It goes to the 1K resistor and then the J3Y NPN transistor on the right of the chip. That's the stable Motion Detected output.cdehttps://www.blogger.com/profile/02720857763992865433noreply@blogger.comtag:blogger.com,1999:blog-4359208343555922820.post-4351210174483725332015-05-05T00:25:51.022+01:002015-05-05T00:25:51.022+01:00Sorry: I didn't get that far yet.
It seems t...Sorry: I didn't get that far yet. <br /><br />It seems the OUT2 signal settles at exactly half the supply voltage during periods of no motion, ie about 1.5V with a 3V supply (2xAA cells battery). <br /><br />I was hoping (but haven't tried yet) to feed that directly into a digital input and configure that to trigger interrupts. But thinking about it now, that voltage level is right in the middle of an logic ambiguous zone, so it may not work so well.<br /><br />Let me experiment and get back to you.<br /><br />An alternative (if one is available) is to use a comparator. An ADC will obviously work too, but will be a power inefficient.<br /><br />Joe.Joe Desbonnethttps://www.blogger.com/profile/01861293299381288570noreply@blogger.comtag:blogger.com,1999:blog-4359208343555922820.post-34580373953280786072015-05-04T02:54:41.703+01:002015-05-04T02:54:41.703+01:00Did you use the connection from opamp out2 to trig...Did you use the connection from opamp out2 to trigger an interupt on a digital input or did you use analog? I had looked at using this signal to trigger an interrupton an arduino but was stymied by the erratic voltage swing and was curious if you successfully used it and how you wired or coded it together.Dwalthttps://www.blogger.com/profile/10739440037377706674noreply@blogger.com