Hey,
I am trying to make a pcb for a motion detector.
Here is the link of the project: https://easyeda.com/RubenNanda/bewegings-melder
the 4 pin female header is a power regulator: https://nl.aliexpress.com/item/Ultra-Kleine-Size-DC-DC-Step-Down-Voedingsmodule-3A-Buck-Converter-Verstelbare-1-8-V-2/32880983608.html?spm=a2g0s.9042311.0.0.32874c4dy28M0C
And the 3 pin female header is a motion detector: https://nl.aliexpress.com/item/Good-H-quality-human-Body-Infrared-PIR-Motion-Sensor-Detector-Module-HC-SR501/32536393041.html?spm=a2g0s.9042311.0.0.32874c4dy28M0C
I am wondering if this pcb is good. It works on a breadboard but maybe I need some more components, but since im quite new to this I don't know what.
Just ask me if you need more information.
Could someone please help me?
Robin Camfferman
Usually you would add a proper reset circuit - 10k from RESET pin to +3.3v and 0.1 uF to GND.
I'd personally use a linear regulator - LT1117-33 or similar. But if you stick with the regulator you have check the output capacitor is at least 10uF as WiFi modules can take quite large peak currents. I'd put the holes in the board for one from VCC to GND close to the ESP even if you don't actually end up using it.