2022-06-26 10:42:49 <KipIngram   > I wonder if this gadget would actually work as advertised:
2022-06-26 10:42:52 <KipIngram   > https://www.amazon.com/Walfront-Frequency-PLJ-6LED-H-Measuring-Resistance/dp/B07NNG7ZV4/ref=sr_1_1?crid=3KLABKLKNSZQG&keywords=frequency+counter+chip&qid=1656254244&sprefix=frequency+counter+chip%2Caps%2C81&sr=8-1
2022-06-26 10:43:03 <KipIngram   > That seems quite inexpensive for what it purports to do.
2022-06-26 10:45:35 <KipIngram   > Given the stuff I'm tinkering with right now, a direct frequency readout would be useful.  I ordered one - we'll see.
2022-06-26 10:46:23 <KipIngram   > I was already planning to make a "dip meter" with a little 50 uA needle indicator - if I put that guy in there with it then I'd know exactly what frequency I was on.
2022-06-26 13:26:16 <KipIngram   > Here's the circuit I'm eyeing for the dip meter:
2022-06-26 13:26:21 <KipIngram   > https://circuitdigest.com/sites/default/files/inlineimages/u2/BAsic-TDO-Circuit.png
2022-06-26 13:27:27 <KipIngram   > I've got an air variable capacitor I can use; it doesn't go all the way down to 5 pF, but it gets decently close.  And it goes all the way up to nearly 400 pF.
2022-06-26 13:28:43 <KipIngram   > P2 is mis-labeled; that should read D2.
2022-06-26 13:31:25 <KipIngram   > I'll use a 2N2222A instead of a BC107; I've got a bag of a couple of hundred of those.