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Hi forum, even though it turned out to be a simple code at the end - I was thrilled that after many hours of investigation and testing I finally got my Mailbox notifier to work. It wakes from deep sleep triggered by a reed switch. Now I hooked it to a battery (I have tried both 3xAAA and 1x18650) but now it does not wake up from deep sleep. What am I missing? #define BLYNK_PRINT Serial #include <WiFi.h> #include <WiFiClient.h> #include <BlynkSimpleEsp32.h> char auth[] = "blynk code"; ch
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ESP32 Powering Issue - ESPHome - Home Assistant Community
We've built multisensor hardware specifically for ESPHome and HomeAssistant : r/homeassistant
ESP32 Mailbox works on USB power but not battery - Need Help With My Project - Blynk Community
Easy battery powered Mailbox Door IoT sensor using ESP32 ← ABrandão.com
ESP32-DevKitC's DeepSleep is consuming quite a bit of current, so I investigated the cause.
Another Wi-Fi Mailbox Sensor Request - Hardware - Home Assistant Community
I'm trying to power a LoRa ESP32 board (SX1276) for a letterbox sensor. The board is in deep sleep until triggered by a pin change (door sensor), sends LoRa message, then returns to deep sleep. However, the batteries only last 12hrs. In theory, these
Make a power supply circuit (step-up/step-down DCDC converter) to run ESP32 on about two batteries.
ESP32 Low Power Device Design - Part 1 - Squix - TechBlog