Hello.
My poor vision cannot reverse engineer now this $1 non-contact AC detector probe from Aliexpress.
----> https://www.aliexpress.com/item/3256804179002546.html?spm=a2g0o.productlist.0.0.b7a676aaPvFuj1&algo_pvid=333a1c52-53be-40e8-a0fc-24db71ce29a8&algo_exp_id=333a1c52-53be-40e8-a0fc-24db71ce29a8-22&pdp_ext_f={"sku_id":"12000028920452873"}&[email protected][email protected]!12000028920452873!sea
It beeps like at 2Hz, would like to modify to 1 beep/chime every 60 seconds. Inside there is a 74HC14, a DC buzzer, bunch of dividing? resistors and 2 AAA cells; cannot follow tiny traces to make its schematic :-( Any help will be appreciated.
It works like the video in here if you want to see it ----> https://www.amazon.com/Mr-Electrica...jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==
(Ignore its flashlight feature)
My poor vision cannot reverse engineer now this $1 non-contact AC detector probe from Aliexpress.
----> https://www.aliexpress.com/item/3256804179002546.html?spm=a2g0o.productlist.0.0.b7a676aaPvFuj1&algo_pvid=333a1c52-53be-40e8-a0fc-24db71ce29a8&algo_exp_id=333a1c52-53be-40e8-a0fc-24db71ce29a8-22&pdp_ext_f={"sku_id":"12000028920452873"}&[email protected][email protected]!12000028920452873!sea
It beeps like at 2Hz, would like to modify to 1 beep/chime every 60 seconds. Inside there is a 74HC14, a DC buzzer, bunch of dividing? resistors and 2 AAA cells; cannot follow tiny traces to make its schematic :-( Any help will be appreciated.
It works like the video in here if you want to see it ----> https://www.amazon.com/Mr-Electrica...jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==
(Ignore its flashlight feature)
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