DIY Metering
I usually check Worldradiohistory.com everyday to see what is new: http://www.americanradiohistory.com/American-Radio-History-Updates.htm Today I saw an issue of Budget Electronics magazine: https://www.worldradiohistory.com/Archive-Elementary-Electronics/Elementary-Electronics-Budget-Electronics-1978.pdf This was published by the same people who produced the yearly 101 Electronic Projects series (mentioned before): https://wb9kzy.blogspot.com/2022/02/101-electronic-projects-magazine.html Budget Electronics had fewer than 101 circuits in an issue but each one was presented more in depth rather than just a schematic and a parts list. The one that caught my eye today was this light meter on page 79: Not so much for this particular design but just the idea of building a light meter rather than buying one. Why would I want or need a light meter ? I have a Nikon D40 digital SLR camera which is quite nice. Originally I bought just the used body on Ebay and was planning to...