Also, put 100n capacitors between supply (5v or 3v3) and gnd near each and every IC.
On Mon, Sep 22, 2025 at 8:00 PM Adrian Godwin <[email protected]> wrote: > Thanks for the pdf. Yes, the schematic wasn't usable. > > The first problem I've found is that SCLK and SDATA are connected to 3v3 > and then have resistors in line. I'm pretty sure you had the right idea but > made an error on the wiring, but if it's not obvious the resistors should > be between 3v3 and the clk/data lines. > > You will likely need a pullup resistor on the light sensor., unless the Pi > has one internally that can be enabled on analog inputs. They normally just > measure voltages and you want to measure resistance. > > Overall, it's pretty good for a first try ! > > > On Mon, Sep 22, 2025 at 7:48 PM Mac Doktor <[email protected]> wrote: > >> >> On Sep 22, 2025, at 2:43 PM, Florian van der Dussen < >> [email protected]> wrote: >> >> Current schematic: >> >> The schematic is too small to read. Please share a larger copy. >> >> >> Terry Bowman, KA4HJH >> "The Mac Doctor" >> >> https://www.astarcloseup.com >> >> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade >> Runner* >> >> -- >> You received this message because you are subscribed to the Google Groups >> "neonixie-l" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion, visit >> https://groups.google.com/d/msgid/neonixie-l/33D10011-0F75-49D6-81B7-8049459EDE45%40gmail.com >> <https://groups.google.com/d/msgid/neonixie-l/33D10011-0F75-49D6-81B7-8049459EDE45%40gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/CALiMYru8bK%3DF2H2ZB%3D1gFMk0KovvktZmac%3DFCyZnr5ZHsRAq_w%40mail.gmail.com.
