I have a 4-channel logic level converter (it says
Level Converter MH on its back and seems to be a very common one for Raspberry Pi and Arduino usage) and wanted to test it's functionality. I don't have a data sheet for it, but its this thing: Link to the product at mepits.com.
Here are images of my board:
I use a 545043 YwRobot breadboard power supply, which provides 5v on one side and 3.3v on the other of my breadboard.
low-voltage side of my converter I connected
+ of the 3.3v side of the power supply and
high-voltage side I did the same but to the 5v +/- on the power supply.
I then connected
LV1 to +3.3v (directly from the power supply), to simulate HIGH, and expected to measure +5V on
HV1 against the GND on the high-voltage side, but my multimeter only showed 2.9v.
The negatives are already connected together on the power supply on the left side, but I added a direct connection to double-check anyways. The upper side is the 5V side, the lower the 3.3V side.
So my question is, did I understand something wrong and wired it up wrongly?