View source for MicroBCU

{| class="wikitable" style="float:right;margin-left: 15px;margin-top: 15px; margin-bottom: 15px;"
! colspan="2"|MicroBCU
|-
! colspan="2"|[[File:MicroBCU_top.png|300px|thumb|center]]
|-
! colspan="2"|[[File:MicroBCU_bottom.png|300px|thumb|center]]
|-
! Developer
| Eugen Burkowski
|-
! Status
| released
|-
! Microcontroller/Board
| universal
|}


== Description ==
A little Bus Coupler Unit with an UART interface

== Hardware ==
*IC: NCN5120
*Size: 23 x 19 x 5.4 (10.3) mm
*Voltage 1: 3.3V
*Voltage 2 (optinal): 5V (default), can be changed: 3.3V - 21V
*Max. current: up to 100mA
*UART: 19200bps 8E1

== User Documentation ==
the new version (R1.2) has to connectors:
* 7x pin 2.54mm THT
* 2x4 or 2x5 pin 1.27 SMD
[[File:MicroBCU_pins.png|378px]]

Attention: MicroBCU has no dedicated pins for WAGO terminal (Red/Grey)!

== Developer Documentation ==

== Build It ==
If you solder the MicroBCU yourself, be carefull:
On (some?) PCV Rev 1.2 the solder print on the top (NCN-) side is wrong.
The two capacitors C5 and C6 in the top right corner are switched - here you can see the correct soldering:

https://github.com/KONNEKTING/KonnektingHardware/blob/master/MicroBCU/R1.2/Board_top.pdf

Also be carefull wenn soldering the big capacitor C2:
The solder print marks the + side of the capacitor, because this is the standard for tantalum capacitors. If you use aluminium capacitors, the - side is marked.

== Links ==
[https://github.com/KONNEKTING/KonnektingHardware/tree/master/MicroBCU]
[https://knx-user-forum.de/forum/projektforen/konnekting/1045398-microbcu-sehr-kleiner-knx-transceiver]

[[Category:Device/Kits]]