wilsonmaker
@wilson-m · Joined July 2025
Maker · home automation · Nottingham · new to IoT
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The Sonoff Basic has an ESP8266 inside. You can flash your own sketch on it through the 4-pin header with a USB-serial adapter (3.3 V, not 5 V!). Then it’s just another Hermetry device.
What’s a single channel gateway vs a normal one? Is it just cheaper?
Did 1 to 4 today. Wi-Fi/BT/HDMI off, GPS off between fixes, 30 s when moving, 30 min when parked, sending every 5 min. Meter now reads about 95 mA average. Should be roughly four days. Also had to switch the profile to Recent message, it was flipping to offline every night, which I thought was a bug. TPL5110 ordered for the next version.
Yes, both on. The script is a loop with time.sleep(30), nothing clever.
Did the SG90 mod first because I’m stubborn: it spins, stop value was 1.47 ms on mine. It could barely lift the blind though, so I switched to the 28BYJ-48 like Laura said, with a microswitch at the top for homing. Slider works, Current value follows blind_pct. The SG90 now spins a paper windmill on my desk.
Serial.write + flush and the meter answered first time! 9 bytes, 233.1 V. I had no idea print turned it into text. Writing power (register 0x000C) next, then it goes over to the ESP32.
Checked the meter menu, 2400 8N1 and my Serial.begin(2400, SERIAL_8N1). So that’s not it.
Ha, so the Wi-Fi was asleep, not the Pi. Checking mine now.
I think there’s a screen blanking option in raspi-config, maybe that’s putting it to sleep? Mine turns the HDMI off after 10 min.
following, I want this for my intercom thing too lol