Firmware

Custom ESP32 Firmware

Custom firmware for a clearly scoped hobby project

Custom ESP32/ESP8266 firmware in C++ (Arduino/PlatformIO) for a clearly scoped hobby project. Base package: up to 3 sensors or actuators, WiFi + MQTT, OTA updates.

Included

Custom C++ firmware (up to 3 sensors/actuators)
PlatformIO project (complete)
WiFi + MQTT integration
OTA update capability
Simple config webpage (set WiFi/MQTT credentials) — no custom UI
Source code + documentation
30 days email support

Bonus — included for free

Home Assistant MQTT discovery for free if it fits your setup

Add-on options

BLE client/server

+80€

LoRa communication

+120€

Display integration (TFT/OLED)

+60€

Home Assistant MQTT discovery

+40€

Deep sleep + battery operation

+50€

Good to know

Complex IoT gateways, BLE mesh, safety-critical controls or real-time regulation are not part of this package — please inquire as a separate project.
A service alongside my main job — the stated delivery time is a guideline, not a committed deadline (see Terms for details).

Summary

Base package239€

Total

239€

No VAT charged (§19 UStG)

Delivery: approx. 1-2 weeks

Estimate. Delays due to missing input (specs, access, hardware) extend the timeframe.

I request immediate execution. I am aware: for digital content (source code, firmware, configurations) my right of withdrawal expires once delivery begins; for pure services I owe pro-rata compensation for work already performed in case of withdrawal.I accept the Terms and the Cancellation Policy.

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14-day withdrawal right

Direct contact — no call center