I'm using a 4x4 NeoTrellis with a Feather RP2040.
Nothing is soldered or bread-boarded. The RP2040 is connected to the NeoTrellis with a 4-pin JST PH to JST SH Cable. I have tried replacing this cable. The RP2040 is powered over USB-C. I have tried using a different USB-C cable, different source of USB power, and powering it via LiPo battery. None of these things have changed the outcome.
The leftmost column of buttons on the NeoTrellis (so LEDs 1, 5, 9, 13) are all much more difficult to actuate than the rest. To the point where they usually do not actuate unless I push unreasonably hard. It's always the same 4, even if I rotate the silicone pad or just manually hold a single button on the pad above buttons on the NeoTrellis one at a time. So I don't think the issue is something like the silicone cover interacting physically with the board in a different way on that column.
I'm using the neotrellis_simpletest example from the 7.x library bundle with no modifications, in case this is some sort of known result of that example.
FIrst column of NeoTrellis is very difficult to actuate.
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- kcook90
- Posts: 2
- Joined: Mon Mar 19, 2018 7:21 am
- danhalbert
- Posts: 4612
- Joined: Tue Aug 08, 2017 12:37 pm
Re: FIrst column of NeoTrellis is very difficult to actuate.
I am inquiring about this, since it's a head-scratcher. In the meantime could you take clear pictures of the front and back of the board so we can look for corrosion and parts-placement issues?
If you measure the on-board regulated 3.3V, what do you get? You should be able to measure it from the upper part of the Vi2c jumper, which is in the upper-left quadrant of the board? Did you change any of the jumpers?
THanks.
If you measure the on-board regulated 3.3V, what do you get? You should be able to measure it from the upper part of the Vi2c jumper, which is in the upper-left quadrant of the board? Did you change any of the jumpers?
THanks.
- adafruit2
- Posts: 22111
- Joined: Fri Mar 11, 2005 7:36 pm
Re: FIrst column of NeoTrellis is very difficult to actuate.
make sure the elastomer is well alighted, if its still being an issue lets send you another neotrellis
email support@adafruit for a new one.
email support@adafruit for a new one.
- kcook90
- Posts: 2
- Joined: Mon Mar 19, 2018 7:21 am
Re: FIrst column of NeoTrellis is very difficult to actuate.
I haven't done anything to permanently change the board, so no jumpers modified. I left my multimeter outside so I unfortunately can't measure that, but here are some photos:danhalbert wrote:I am inquiring about this, since it's a head-scratcher. In the meantime could you take clear pictures of the front and back of the board so we can look for corrosion and parts-placement issues?
If you measure the on-board regulated 3.3V, what do you get? You should be able to measure it from the upper part of the Vi2c jumper, which is in the upper-left quadrant of the board? Did you change any of the jumpers?
THanks.
https://imgur.com/a/FuPag8d
I did a most scientific test I could think of to quantify the problem, so I put the trellis and silicone pad on a scale, and measured the lowest reading there the LED would still light up from the button being pushed. The whole left column takes about 290-320g, while all the other ones take less than 150g. I doubt this is very accurate, and the numbers themselves are probably wildly wrong, but the ratio between them should be somewhat accurate.
Please be positive and constructive with your questions and comments.