A bit related but maybe not so much: as you may have seen in my workshop presentation, I'm working on a tiny BLE mouse using BlackBerry trackpad sensor, based on the nRF52832. As part of this, I built a Feather Wing format board just for the sensor:
https://twitter.com/protobits/status/1303733534931197953 I have a NuttX driver mostly complete for it. If there's interest I could contribute it to mainline (as it is mostly reverse engineering a sensor I was unsure if that was appropriate for mainline). It basically behaves as an SPI ADNS3530 sensor to most extent. I don't really have a Feather board with me but it would pair really well with the Bluefruit LE. I will publish the design soon, if you're interested in that as well (the BOM is really small). Best, Matias On Fri, Sep 11, 2020, at 14:24, Gregory Nutt wrote: > > > I actually just got one of these FeatherWing boards. I was thinking > > about using it with the nRF52 Bluefruit LE - nRF52832. Seemed like a > > cool way to add a UX for interacting with the bluetooth stuff. > > Cool! That could be useful if you need a complete handheld UI. There are > already an ILI9341 and STMP811 drivers. I suppose it will need a custom > keyboard driver over I2C. There is also a GPIO expander, Neopixel, > microSD. I don't know which GPIO expander is on the board. GPIO > expanders are a nuisance because you can't get off the ground without > first having the GPIO exander. The LCD backlight, touchscreen, microSD > and keyboard all depend on the GPIO expander. Not for people who need > immediate gratification. > > I had originally though to use this with the Giant Board that Adam has > been working with. I am having motivational problems, however, and > getting things shipped to Costa Rica is slow and/or expensive. > > > >
