RUMBA32 V1.1 User Manual – Rev A
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12
EXP3
–
G
ENERAL
E
XPANSION
H
EADER
12.1
O
VERVIEW
EXP3 is an expansion header consisting of two rows of seven pins. The EXP3 header is a consistent
header pinout that has been present on all RUMBA32, RUMBA+ and RUMBA boards.
EXP3 provides access to power from the 5V and 12V rails, along with several IO, including PWM
outputs, analog inputs, I2C and UART.
Figure 12: EXP3 Connector
12.2
EXP3
M
ODULES
EXP3 is a convenient way to attach add-on modules to the RUMBA family of boards. There are
currently two EXP3 modules developed by Aus3D.
12.2.1
RUMBA WiFi Adaptor
This module integrates an ESP8266 WiFi module into a plug-and-play module that can be connected
directly to RUMBA boards, without the need for any additional wiring. It can be used to access and
control the printer using a web interface over WiFi. The printer firmware needs to be configured to
support this (typically be enabling serial on USART1).
For more information on this adaptor, visit:
https://github.com/Aus3D/RUMBA-WIFI
12.2.2
RUMBA MKS-TFT Adaptor
This is an adaptor that makes it possible to connect a range of TFT displays from Makerbase. The
printer firmware needs to be configured to support this (typically be enabling serial on USART1).
For more information on this adaptor, visit:
https://github.com/Aus3D/RUMBA-TFT
