| Electronics > Beginners |
| Can't get SSD1306 OLED working on custom PCB |
| << < (5/5) |
| Nusa:
--- Quote from: Majek Ondrovic on April 07, 2019, 07:24:43 pm --- --- Quote from: Nusa on April 07, 2019, 05:16:11 am --- --- Quote from: Majek Ondrovic on April 07, 2019, 02:56:27 am --- --- Quote from: Nusa on April 07, 2019, 02:36:16 am ---RST needs to be held low long enough to be recognized when power is first applied, and then allowed to go high. The capacitor is more than just a filter in this case. --- End quote --- Aha! very interesting, thank you. I'm glad I asked --- End quote --- For extra credit, see if you can figure out what the diode is for. --- End quote --- Hmm I'm not sure.. Does it discharge the cap quickly but allow it to charge up slowly, or something like that? :-// --- End quote --- Yup, but only in the power-off situation. That ensures the power-on reset circuit gets reset. |
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