beaglebone-black - Flipbook - Page 78
BeagleBone Black
Table 7.3: J1 Serial Header Pins
PIN NUMBER
SIGNAL
1
4
5
Ground
Receive
Transmit
Fig. 7.7: Serial Header
7.6 HDMI
Access to the HDMI interface is through the HDMI connector that is located on the bottom side of the board as
shown in Figure 57 below.
The connector is microHDMI connector. This was done due to the space limitations we had in 昀椀nding a place
to 昀椀t the connector. It requires a microHDMI to HDMI cable as shown in Figure 58 below. The cable can be
purchased from several di昀昀erent sources.
7.7 microSD
A microSD connector is located on the back or bottom side of the board as shown in Figure 59 below. The
microSD card is not supplied with the board.
When plugging in the SD card, the writing on the card should be up. Align the card with the connector and
push to insert. Then release. There should be a click and the card will start to eject slightly, but it then should
latch into the connector. To eject the card, push the SD card in and then remove your 昀椀nger. The SD card will
be ejected from the connector.
Do not pull the SD card out or you could damage the connector.
7.6. HDMI
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