magnus wrote:Hi,
Does anyone know if 74HC595N can be replaced by 75HC595? One of my ICs heats up like crazy and my x0xb0x won't produce sounds. I can't find a 74HC595 for a reasonable price in England, but the guy at Maplin told me to order a 75HC595, which they sell very cheap. Any thoughts? Cheers
Re: 4-Turn trimmer substitute for VCO tune & width adjustmen
bcbox wrote:I'm using some very nice 4-turn trimmers for my x0xi0 mod for VCO Tune and Width adjustements. I'm using them because it has two VCO's and it's more critical to have fine adjustments but I have also found it can be hard to get an exact setting with the single turn trimmers in the stock x0xb0x (or TB-303 for that matter). The part is also a standard drop-in replacement. They're not cheap but well worth it....
Digikey Part #'s
3339P-503LF-ND
3339P-502LF-ND
Mouser Part #'s
652-3339P-1-503LF
652-3339P-1-502LF
(they're significantly cheaper at Digikey)