Can you see ground? I can't

Thread Starter

Merlysys

Joined Nov 17, 2013
23
I bought these little boards but cannot see the ground connection, can you?
There are 4 level shifters, input/output pins and Vcc for 5 and 3.3 I can see but where is the ground connection?

The instructions say
...an example when Arduino is interfaced with an 3.3V device
HV : high voltage level (connect to Arduino's 5V supply)
LV : low voltage level (connect to Arduino's 3.3V supply)
L1-L4 / H1-H4 : low and high level IO lines, connect 5V IO lines of Arduino to H1-H4 and IO lines of 3.3V device to L1-L4

The listing is at http://www.ebay.ca/itm/181275880556
 

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