#nRF52840

[adafruit]

PCB of the day! Bluetooth + TFT = nRF52840 Sense Feather with TFT display 🛠️🔄🎚️

We have to redesign the Feather Sense https://www.adafruit.com/product/4516 - almost all the sensors went EOL over the last few years, but we're slowly getting to doing a refresh. Meanwhile…we're thinking of maybe making a product much like our Feather ESP32-S2 or S3 TFT boards https://www.adafruit.com/product/5483 but this time with an nRF52840. We made some low-power choices and stuck a BME280, PDM mic, LSM6DS3, and MMC5603 for environmental and motion sensing.

#adafruit #electronics #pcb #opensource #opensourcehardware #pcboftheday #bluetooth #tft #nrf52840 #feather #display #bme280 #pdm #microphone #lsm6ds3 #mmc5603 #nordicsemi #nordic #sensorsrefresh #newdesign #lowpower #environmentsensing #motionsensing #electronicsengineering #sensefeather #productinnovation #wirelesstechnology #innovation

[alexmotechblog]

NRF52840 Xiao Sense

Happy Manic Maker Monday!

For two upcoming projects, I'm going to be using two flavors of the Seeed Studios Xiao boards based on the NRF52840. These little boards are really something.

For one upcoming project, it has one of each of the exact things I need:

BLE to connect to another project on which I'm working

UART for chatpad input

SPI for eink display

I2C for a GPS

A few GPIO for a soft power button, an indicator LED, and maybe a vibration motor for haptics

Battery power and charging

An internal IMU (on the Sense flavor)

The only difference between the Sense and the non-Sense is that the former has a built-in IMU and microphone which are meant for tinyML projects since ML is all the rage (think of being in ultra-low power and performing inferences on audio samples but sleeping and collecting in-between).

In fact, for this Learn-a-Thon, there are a few things I totally want to investigate: the Embedded Template Library (for exploration on C++ to really object-orient the project), nRF Connect SDK, Zephyr OS (I'm late to jump on the bus here but there's good talk about this Linux-like take on RTOS), BLE, and TinyML.

nRF Connect SDK - It will be nice to get into the APIs provided by Nordic without any layers inbetween. A simple bare-metal eventloop will be lovely here.

ZephyrOS - I'll probably only be using this one of the projects since for the other one, bare metal will be just fine and I'd like to just get into the direct nRF Connect SDK for the hell of it. They say this abstracts away drivers which is an interesting prospect included in an RTOS! I've heard it's 80% configuration and 20% coding but, if it's good code running the drivers, why not just leverage it!

Embedded Template Library - generally I don't code in C++ besides for work, but I love the idea that it is possible to code something that uses primarily static data and has a low footprint. I've read reviews on ETL, heard about it on podcasts, and just gotta try it. There is a solid reason for using C++ in these projects and that is that I want to create a common base class that outlines capabilities of each of these devices.

BLE - I've done lots with wifi, written wifi drivers, wifi managers, connectivity managers, etc, but never BLE! I totally feel like I need to try it out! Especially since one of the projects is purely a sensor arm that transmits over BLE. Eventually, something else that would be really interesting would be OTA over BLE which I've never had to manage.

TinyML - I also haven't jumped into the ML/AI with both feet really. I've used pre-compiled models and hardware acceleration and some tangential TVM stuff but I want to create the model and see it with my own destructive hands >:) I'm also interested how much optimization is in control of the model developer.

Low Power Mode - I've done some of this already at work but it's a good idea to get in the weeds on a different micro. Especially, I'd like to understand how Zephyr might abstract this, how I can optimize packet offloads, etc.

I've got kind of a slew of experiments I want to try:

Zephyr OS Emulation - No hardware way to get started upper level programming. I would love to code around in Zephyr and get emulated results. Always a handy tool.

Zephyr OS - Get hello world on Xiao (sanity, familiarity, etc)

Zephyr OS + BLE - I've seen demos, I think it's easy to get started. Attaching a button or sensor should be pretty easy from there.

TinyML + IMU + BLE (https://blog.tensorflow.org/2021/05/building-tinyml-application-with-tf-micro-and-sensiml.html)

#xiao sense #nrf52840 #ble

[raytaccorp]

How to Get nRF52840 & nRF52833 Zephyr Project Started

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#BLE #bluetooth #BT5.2 #BT5.3 #BT5.4 #Demo Board #Dev #IOT #MDBT50Q #Module #Nordic #nRF52 #nRF52833 #nRF52840 #NT5.4 #Raytac

[futureelectronic1527]

Panasonic: New Product Introduction: PAN1770 Series Bluetooth Low Energy RF Module

https://www.futureelectronics.com/m/panasonic . Panasonic PAN1770 Series is based on the Nordic nRF52840 single-chip controller that allows you to attach an external antenna via uFL. With the Cortex®-M4F processor, 256 kB RAM, and the built-in 1 MB flash memory, the PAN1770 Series can easily be used in standalone mode, eliminating the need for an external processor saving complexity, space, and cost. https://youtu.be/8Ur-bFMieHw

#Panasonic #PAN1770 #Bluetooth Low Energy #RF Module #Nordic nRF52840 #single-chip controller #external antenna #uFL #Bluetooth 5.3 #LE 2M PHY #LE-coded PHY #Cortex-M4F processor #256 kB RAM #Panasonic single-chip controller #Youtube

[millenniumsemi]

#Nordicsemi nRF52 #Nordic nRF52840

[flyingthingz]

air guitar with circuitpython synthio ! @adafruit circuitplayground bluefruit on the paws and feather nrf52840 inside the head

#electronics #fursuit #furry #circuitpython

[human-south-of-north-pole]

whats your favorite type of computer 🖥

I like the computers best that have just enough computation power to get their respective job done.

In the past I've worked with a marvelous little SoC, the nRF52840 (iirc apple air tags use the nRF52832) which was a lot of fun (and also very well documented). That was probably the coolest hardware I ever got my hands on.

On a very close second place, another amazing device I got my hands on is an old programmable pocket calculator, the Sharp PC-1401.

My laptop is a thinkpad (not saying which one, don't want to dox myself that hard) and my desktop pc I built myself.

These are probably the favorite computers which I interacted with. I image I'd also be quite fond of big supercomputers, unfortunately they don't let me near those (yet).

[y2fear]

New Products 1/17/24 Featuring the Adafruit Feather nRF52840 Sense! « Adafruit Industries – Makers, hackers, artists, designers and engineers!

[ozrobotics]

2PCS RF-star nRF52840 USB Dongle BLE 5 Mesh NFC Thread ZigBee Eval Grab Tool for nRF Connect The nRF52840 Dongle is a small, low-cost USB dongle

[rixtronix]

nRF52840 HRM UART ANT MSG Stable Easy

#youtube

[hackernewsrobot]

Make a low-cost Bluetooth LE packet sniffer with Wireshark

https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/guides/ble-sniffer/

[adafruit]

nRF52840 CLUE revision coming soon

Another revision! This time, it's the CLUE! (https://www.adafruit.com/product/4500) This board had a ton of unavailable sensors: the LSM6DS33 was discontinued, then the LIS3MDL price went up to $5 each, the BMP280 also went EOL, and finally, the APDS9960 was last-time-buy. We have enough to get these back in stock by swapping the LSM6DS3 for the DS33.

#adafruit #clue #microbit #nordic #nRF52840 #electronics #techupdate #gadgetrevamp #sensorupdate #circuitboard #hardwarenews #engineering #diyelectronics #techinnovation #smarttechnology

[gerrypez]

Bookmarking this product LILYGO® TTGO SoftRF T-Echo NRF52840 LoRa SX1262 -- a Flarm transmitter for $61.

[raytaccorp]

Raytac Extents Digi-Key's Product Listing and Shipping Destination

Raytac Extents Digi-Key’s Product Listing and Shipping Destination

Digi-Key is the most well known channel for developers to access the sample during project planning and evaluation stage. To provide a speedy, easy sample purchase experience is really a committed promise Raytac persist in. Raytac is glad to announce we have successfully listed most of Raytac products in Digi-Key. Moreover, excepting US, and Asia, to included Europe in the available shipping…

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#amazon #BLE #bluetooth #digi-key #eBay #Module #Nordic #nRF52 #nRF52832 #nRF52833 #nRF52840 #nRF5340 #Raytac #Tindie

[diyprojectslabs]

Boost Your IoT Projects: Meet the Powerful Wio-WM1110 LoRa Wireless Module

Introducing the Wio-WM1110: An all-purpose module for creating long-range IoT applications with low power consumption. This module combines LoRa technology with Semtech LR1110 and Nordic nRF52840 chips. It also includes GNSS, Wi-Fi, and Bluetooth capabilities for accurate location-tracking services. Unleash the Power of the Wio-WM1110 Module and Seeed Fusion PCBA Service The Seeed Studio…

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#Meet the Powerful Wio-WM1110 LoRa Wireless Module #SeedStudio #Wio-WM1110 #Wio-WM1110 LoRa Wireless Module

[millenniumsemi]

#Nordicsemi nRF52 #Nordic nRF52840