Couple of tips: A grinding bit in a Dremel (or even by hand) will give nice, clean holes. Far less likely to tear/deform the metal than a drill bit. https://www.dremel.com/productimages/x84922lg.jpg.pagespeed.ic.uo5-PvvABx.jpg Also, a diamond grit file will be much, much quieter for filing out the ...

If any other Canadians found a source other than eBay/China (i.e. a Canadian supplier) for the 20mm 8Ohm 0.5W speaker - please let me know! It's now exactly 6 weeks since I placed an order for it on eBay, and I'm losing hope :( I'm still waiting for mine too, i'm at about the 6 week time now too (o...

If any other Canadians found a source other than eBay/China (i.e. a Canadian supplier) for the 20mm 8Ohm 0.5W speaker - please let me know! It's now exactly 6 weeks since I placed an order for it on eBay, and I'm losing hope

A diode of any kind really can be used but if possible get fast recovery diodes like this : https://www.taydaelectronics.com/diodes/fast-recovery/1n4936-fast-rectifiers-diode-1a-400v.html Hi, thanks for giving an example! This is one that's available from a local retailer (for me) - would this work...