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Q: what is the unpopulated IC pads for?

尋ねた joea32 に 2020-08-14 10:50:57

Greg The one with 2 pads is for an external battery. The one with 3 pads is for an external speaker. github.com sharebrained portapack-hackrf blob master hardware portapack_h1 portapack_h1.pdf

2020-08-14 03:57:27 役に立つ (1)
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Q: hi, is it compatible with LTN140AT35-301 ?

尋ねた BG172339333 に 2020-07-09 02:19:02

Greg Hi, that particular panel is not listed at panelook.com. There are very similar ones on there however, so as an educated guess I would say it is a 30 pin, 6 bit panel at 3.3 volts. It should be compatible, but you may need to put the correct file on a USB stick to correctly configure the driver board and change the settings in the menu.

2020-07-09 02:33:01 役に立つ (0)
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Q: what the 3-pin connector on the back is for??

尋ねた Sr_qq1 に 2020-01-26 08:12:43

Greg The white 3 pin connector is for either stereo line output or speaker amp positive output pin. Pin 1 is SPP (Speaker amp positive), pin 2 is ground and pin 3 is SPN (speaker amp negative). You could connect a small speaker across pins 1 and 3 for mono audio out, however installing the metal shell will mean you cannot hear the speaker.

2020-04-10 08:41:13 役に立つ (1)
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