Re: Introduction / Newbie Questions


Hey Mark,

   The HiLetGo display has a 3.3V 3-pin voltage regulator on the board (U1), but by default it is not in circuit.  There's a small pair of pads (looks like a regular SMD pad) labeled J1.  If you jump the pads with a solder blob, you can run the display from 5V.


On Sun, Nov 8, 2020 at 02:47 PM, Mark Erbaugh wrote:




I located a display on Amazon (


that appears to be very similar. However, the docs say that it only runs on 3.3V, not 5V and that level shifters are required. I don’t see those on the schematic. Is this display being run at 5v?




Join to automatically receive all group messages.