I need a fully-working prototype that can pick up wMBus S, T and C-mode frames from household utility meters, decode the consumption values only, and push them straight into my Tuya account so they show up in the standard Tuya Smart / Smart-Life app on both Android and iOS. Hardware I want to stick with: • ESP8266 or ESP32 for Wi-Fi and Tuya connectivity • CC1101 (868 MHz) as the RF front end for wMBus Your job is to design the firmware and, if necessary, a minimal reference schematic so I can have the board assembled locally. The device has to stay OTA-upgradable through Tuya, publish the consumption data at user-defined intervals, and appear as a normal energy-type device inside the existing Tuya app—no custom mobile development required. Deliverables 1. Source code for ESP8266/32 and CC1101 showing clean separation between wMBus decoding and Tuya IoT SDK calls. 2. Pinout / BOM and a one-page wiring diagram suitable for a quick PCB spin. 3. Instructions for flashing, pairing with Tuya, and verifying that live consumption values update in the app. 4. Confirmation test report based on at least two real wMBus meters. Acceptance will be based on my ability to compile, flash, pair and read accurate consumption figures in the Tuya app without additional tools.