MicroBCU2

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MicroBCU2
MicroBCU2 V00 11 soldered top.jpg
MicroBCU2 V00 11 soldered bot.jpg
Developer SirSydom
Status beta
Version V00.20
Microcontroller/Board universal


Description

A a compact bus coupling unit for KNX building automation based on the NCN5120 knx transceiver. It serves as a power supply and UART access to KNX bus.

Hardware

  • IC: NCN5120 (ready for NCN5121 / 5130)
  • Size: 23 x 19 x 9 mm
  • Weight: about 4g
  • Voltage 1: 3.3V
  • Voltage 2 (optional): 5V (default), can be changed: 3.3V - 21V
  • Ripple at VCC1+2: about 50mV
  • Max. current: up to 100mA
  • UART: 19200bps 8E1 / 3.3V

User Documentation

Please refer to MicroBCU2 Project on Gitlab

Links

Vorstellungs- / Entwicklunsthread im KNX User Forum

1. Sammelbestellung im KNX User Forum

OnSemi NCN5120 Datasheet

MicroBCU2 on GitLab