403 Results for "feather"

Training the HelpMe! for each user
Log from HelpMe! Trigger using EMG
What's the problem?Unfortunately, whilst the voltages for fist-clenched and non fist-clenched (relaxed hand) are likely to be significantly different. The voltages for other hand actions (e.g. shaking hands, holding a pen, gripping a mouse) might not...

Wearable Prototype Schematics and Simplifying the Hardware Design
Log from EmotiGlass
The schematics for the wearable prototype have been uploaded, with each sheet corresponding to a small PCB with a portion of the EmotiGlass circuitry. Sheet 1 shows the right side PCB, which makes the connections between the Feather and the rest...

OLED first runtime result
Log from Home environment monitor
OLED display runtime was 52.3hrs to hitting the wall of not dropping voltage, and 54.3hrs till last serial data. I'm not sure if the significance of it, but the OLED was still displaying the last image (meaning it was running fine when the Feather ARM...

Test Jig Built
Log from OctoSonar FeatherWing
I made a new test jig to replicate the function of the old one - a much tidier build this time. It is again configured as an Arduino shield so I can swap it onto the same Arduino without reprogramming. I used one of the scrap OshPark boards for the top...

Polaroid Transparency Light Box Frame
Log from Barb Makes Things
For this project, I teamed up with Jay Jacobs to create a frame/light box for some of his instant transparencies. It has 81 neopixels inside, and is currently powered by an Arduino Uno, though Jay wants to eventually control it with a Bluefruit Feather.This...

Simulating the transducer with a DAC
Log from Murgen: open source ultrasound imaging
Using a Feather WICED (had it in my stuff): upon a pulse, the DAC sends a waveform:which gets amplified properlyand gives a nice enveloppe!Throw in a few diods to clip the signal at 1.5V before it gets to the PRUDAQ... and you have an emulated transducer...

Pushing the STM32 acquisition
Log from Murgen: open source ultrasound imaging
As I'm trying to get a signal around 1MHz, I'm also trying to get a proper acquisition.. the Feather WICED, sporting a STM32F205, should do the trick. I've been using two interleaved ADCs, and this is not so bad.. it gives the following results for the...

Overview of a ultrasound system
Log from Murgen: open source ultrasound imaging
I realized I was missing an overview of the system that was being designed. All in all, here it is summarized, the usual architecture found in the literature:The microcontroler is at the moment a Feather WICED, the transducer one found on eBay, and the...

Featherwing Format
Log from HC-SR04 I2C Octopus "octosonar"
SOme time ago I updated the design to featherwing format. It is still usable via a cable connection, but now it can also be plugged directly onto a Feather format controller. I also turned the camera on while making the most recent batch. While I do...

PewPew FeatherWing
Log from D1 Mini Matrix Deluxe Shields
Apart from making those breakout boards for the D1 Mini (and the corresponding libraries), I also decided to use the IS31FL3733 chip in an expansion board for the Adafruit Feather boards, turning them into a simple game console. However, since that's...

First impressions
Log from Earthquake validation gadget
The device is built up with an Adafruit Feather HUZZAH and a Mercury Tilt Switch Module for Arduino. They are programmed to detect if an earthquake is occurring based on vibration recorded and tweets by people next to you. A push button was mounted on...

ULTiM8x8 + FastLED + ESP8266 Web Server
Log from ULTiM8x8
Jason Coon from the FastLED team , used three ULTiM8x8 panels and a Adafruit Feather ESP8266 running FastLED for this quick demo video.Source code and more details: https://github.com/jasoncoon/esp8266-fastled-webserver/tree/ultim8x8

First Production Boards
Log from PewPew FeatherWing
The PCBs arrived, and I assemble the first four kits already:A single kit is 4 pieces: the PCB with all the SMD parts soldered, the two pin headers, and the LED matrix. You will have to solder them all together yourself.This is for two reasons. FIrst,...

Feathers
Log from ESPresso Scale
Cheap, checkEasy to solder, checkCompatible with I2C wings, checkCompatible with (most? ) SPI wings, check (not using SPI pins for ADC)Compatible even with ESP8266 feather, check (solder jumper for speed control needed) If you need it urgently for a...

Stream Announcement!
Log from Keyboard FeatherWing
We're in the endgame now. I'll live stream on Wednesday, May 29th at 8PM CEST, this might be the final @kicad_pcb stream for this project! Sub here to get a notification, don't forget to 🔔https://www.youtube.com/arturo182 Progress so far available...

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