▲ 110 r/yerbamate
Anyone tried mate in a siphon?
Video is not mine and I don’t speak Portuguese, but it looks very good. I have the siphon like in the video, anyone tried brewing mate this way?
u/ItsPassiveDepressive — 8 days ago
u/ItsPassiveDepressive
Innovation or a crime against pour over?😂
I can't tell if this is coffee innovation or a crime against pour over. 😂
Does using a frother during brewing actually improve extraction, or is it more likely to over-agitate the coffee?
u/ItsPassiveDepressive — 13 days ago
▲ 1 r/diyelectronics
ESP32-S3 dual SPI displays glitch when 12V supply is on. Need fixes before PCB
Setup: ESP32-S3 driving 2× GC9A01 SPI displays (animated eyes), 3× SHT31 sensors via TCA9548A mux, IRF520 MOSFETs for 12V fan + 5V pump (LM2596 buck), 12V 10A switching supply.
Layout: Two separate breadboards. BB1 (USB-powered): ESP32, displays, sensors. BB2 (12V): MOSFETs, buck, terminal blocks. Only 4 wires cross between them (2 MOSFET signals + 2 grounds). Decoupling caps on both rails. Ferrites on 12V leads.
Problem: Displays render perfectly on USB alone. Plug in the 12V supply and both displays show color corruption and glitching. Fan and pump work fine — only SPI displays are affected.
Already tried: 1000µF / 100µF / 0.1µF caps on rails, ferrites on 12V, 100Ω series resistors on SPI lines, physically separating the breadboards, lowering SPI clock (screens went black), dual-core task separation.
Question: Glitching is reduced but never gone. What else can I try at the breadboard level to fix it?
u/ItsPassiveDepressive — 3 months ago
▲ 1 r/AskElectronics
ESP32-S3 dual SPI displays glitch when 12V supply is on. Need fixes before PCB.
Setup: ESP32-S3 driving 2× GC9A01 SPI displays (animated eyes), 3× SHT31 sensors via TCA9548A mux, IRF520 MOSFETs for 12V fan + 5V pump (LM2596 buck), 12V 10A switching supply.
Layout: Two separate breadboards. BB1 (USB-powered): ESP32, displays, sensors. BB2 (12V): MOSFETs, buck, terminal blocks. Only 4 wires cross between them (2 MOSFET signals + 2 grounds). Decoupling caps on both rails. Ferrites on 12V leads.
Problem: Displays render perfectly on USB alone. Plug in the 12V supply and both displays show color corruption and glitching. Fan and pump work fine — only SPI displays are affected.
Already tried: 1000µF / 100µF / 0.1µF caps on rails, ferrites on 12V, 100Ω series resistors on SPI lines, physically separating the breadboards, lowering SPI clock (screens went black), dual-core task separation.
Question: Glitching is reduced but never gone. What else can I try at the breadboard level to fix it?
u/ItsPassiveDepressive — 3 months ago