Anyone use Handheld Legend PCB Kit?

[VeteranGamer]

What’s the 2nd little pcb and ribbon cable for anyways?

the 2nd PCB and ribbon cable are a really good addition (in theory)....
(its something I've also done something very similar on some previous builds)

however...
the execution on this kit is really poor/shoddy (IMHO)....
this kit has been knocked up (ripped off) by someone that hasn't built any by the looks of it...
(or they would have come up with something a bit more practical)


the idea of the is to make the build a little "easier" and cleaner by just having a ribbon cable connected between the button PCB and the RPi
obviously, you'll have to solder ribbon connects on both PCBs and solder the second PCB directly to the RPi


where this kit fall short....
is which GPIO they've used for the buttons (which limits you a little when putting a build together)....
but more importantly they havent bothered supplying the people that buy these kits with the GPIO layout, which means most novice builders have been put off by using it and just solder wires from button PCB to RPi
(which kinda makes this addition a bit pointless and a bit of a waste)
and then you also have the length of the ribbon cable (but you can get a shorter one)


NB: anyone wanting to use the 2nd PCB and ribbon cable and isnt sure about where everything goes (GPIO).....
just use a multi meter and test the continuity from the button PCB to the 2 PCB/RPi (it isnt rocket science)







.

[kingraa777]

so can anyone make a write up on how to use this board ? GPIO pin outs etc ? like a guide ?
im sure alot of people would appreciate it ?

[infinitLoop]

What’s the 2nd little pcb and ribbon cable for anyways?

you use it to connect the button board to the pie. solder the little board to the whole gpio, then use the ribbon cable to connect the two.

[infinitLoop]

i mapped out the pins they all went to somewhere, if someone really wants to use that and needs it. but, like veteran says, they're not great - poor layout, etc. the little "thumbstick" thing they give you seems pretty terrible too.

in a nutshell -> most of the "kit" is useless. i have no idea what they think you're supposed to do with those rails. i guess, use them in testing? the joystick sucks, and where they want you to mount the special key, right in the middle of the front, under the screen, sucks too.

also, if you aren't really confident in soldering, then trying to do the ribbon connectors is going to be frustrating, at best. you are better off just wiring up a common ground to the gpio without the little breakout board, as everyone says. i /guess/ the ribbon cable saves you room, but you can get pretty low-profile cable on its own.