# Hardware interfaces and APIs

> APIs and interfaces that connect your hardware to software systems and cloud platforms via MQTT, REST, UDP or HTTP, without touching the running system.

Source: https://1x1it.de/en/hardware-entwicklung-programmierung/schnittstellen/

A circuit board on its own rarely solves a problem. We develop the APIs and interfaces your hardware uses to deliver data to software systems and cloud platforms, and to act on signals coming back from them.

[Discuss an interface project](https://1x1it.de/en/kontakt/#anfrage)
[All hardware services](https://1x1it.de/en/hardware-entwicklung-programmierung/)

APIs & interfaces Service

- **Network:** MQTT, REST, UDP, HTTP
- **Bus:** I²C, SPI, CAN
- **Firmware:** C/C++ for STM32, ESP32
- **Target:** Software systems, cloud platforms

## What we connect

Because we write the board design, firmware and software ourselves, both sides of an interface fit together from the start.

- Hardware to software: Your devices deliver data to existing programs, servers or cloud platforms and accept signals from them.
- Bridges between systems: We connect systems that the manufacturer never connected, with our own hardware in between if needed.
- Protocol to suit the environment: Depending on the use case, communication runs over MQTT, REST, UDP or HTTP.
- On the board: We connect sensors and components to the microcontroller via I²C, SPI and CAN.
- Without touching the running system: Where possible, we dock onto existing interfaces instead of having the existing platform rebuilt.
- On the software side: Between programs we build interfaces with REST, GraphQL, SOAP or EDI.

## From practice: the 1x1-Bridge

For a large LED screen on Kurfürstendamm, real light and smoke effects were to fire in sync with the advert, without touching the running playout system.

- Signal from the platform: The playout platform sends a signal when the advert starts, integrated without any special extension to the platform.
- 1x1-Bridge: Our own circuit board with firmware receives the signal via UDP, MQTT or HTTP and acts on it in real time.
- Actuators: Spotlights and fog machines react frame-accurately. Each stage stays replaceable, and failures stay limited to one stage.

[See the project in our references](https://1x1it.de/en/referenzen/#streaming)

## Related

[IoT and sensors Capture readings in real time](https://1x1it.de/en/hardware-entwicklung-programmierung/iot-sensorik/)
[Special electronics Devices you cannot buy](https://1x1it.de/en/hardware-entwicklung-programmierung/spezialelektronik/)
[Software development Custom software and interfaces](https://1x1it.de/en/softwareentwicklung/)
[Electronics & embedded All hardware services](https://1x1it.de/en/hardware-entwicklung-programmierung/)

## Two systems that do not talk to each other?

Tell us what needs to be connected. We build the bridge, in hardware and software.

[0173 644 22 17](tel:+491736442217)

[Discuss a hardware project](https://1x1it.de/en/kontakt/#anfrage)