Mike - K8LH
Well-Known Member
Colin55,
Since your Talking Electronics site is pretty much "one way", where you get to make all the comments and criticism without any method for readers to make queries or provide feedback, I hope you don't mind an open-ended question placed here.
As I was browsing through your site today I noticed your critique of Jose Pino's ANP (almost no parts) Clock on the Spot The Mistakes (page 11) page (near the bottom of the page). The original Jose Pino page can be found here; Jose Pino's Amost No Parts Clock
Your complaints were (1) no segment current limiting resistors, and (2) no digit driver transistors. I believe the first issue is subjective. I myself omit current limiting resistors in favor of software current limiting. Your other complaint is confusing to me since Jose is only lighting one segment at a time on this Charlieplexed display and so there's no need for digit driver transistors. Jose confirmed this when I asked him about it a few years ago, which brings me to my question.
Did you ever consider asking Jose about his circuit before criticizing it unfairly based on a faulty assumption?
Regards, Mike
Since your Talking Electronics site is pretty much "one way", where you get to make all the comments and criticism without any method for readers to make queries or provide feedback, I hope you don't mind an open-ended question placed here.
As I was browsing through your site today I noticed your critique of Jose Pino's ANP (almost no parts) Clock on the Spot The Mistakes (page 11) page (near the bottom of the page). The original Jose Pino page can be found here; Jose Pino's Amost No Parts Clock
Your complaints were (1) no segment current limiting resistors, and (2) no digit driver transistors. I believe the first issue is subjective. I myself omit current limiting resistors in favor of software current limiting. Your other complaint is confusing to me since Jose is only lighting one segment at a time on this Charlieplexed display and so there's no need for digit driver transistors. Jose confirmed this when I asked him about it a few years ago, which brings me to my question.
Did you ever consider asking Jose about his circuit before criticizing it unfairly based on a faulty assumption?
Regards, Mike