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I decided that for my Holiday Special 20 shopping cart that I would get myself an RPi 400 kit since it was in stock at Newark and cost an even $100 .   A great belated Christmas present! Raspberry Pi - Pi400 - All in One Raspberry Pi, Keyboard and Mouse Computer   The package arrived Wednesday - thanks Tariq and Element14!     The kit includes the RPi 400, a power adapter, RPi mouse, SD card and micro HDMI to HDMI cable.   Here's the setup as I'm installing ...
I just saw the sad news that electronics retailer Fry's Electronics is going out of business after 36 years: https://www.usatoday.com/story/tech/2021/02/24/frys-electronics-has-gone-out-business-after-36-years/4572429001/   Fry's is is probably only well known on the West Coast although they had an online presence.  They started in Sunnyvale, CA and I used to go to the stores in Southern California when I lived down there and then continued to shop in the Wilsonville store when I mov ...
I recently saw that Electronic Goldmine is selling new old stock of Signetics NE564N PLL ICs https://www.goldmine-elec-products.com/G25530 .   This brought back memories of my early career in electronics working at the University of Hawaii from 1971-1973. That was a period of time when integrated circuits were just becoming more common and most everything was bipolar.  FETs were only available as discretes and were quite costly, so we didn't use them.  Motorola introduced their h ...
Last week I received a couple of boxes from Newark that turned out to be the Multicomp Toolkit bundle that I won in the Holiday Special 20 competition - Thanks Tariq and Element14 !   One of the tools included was a USB oscilloscope MP720016-US  that's been road tested on Element14.   I'll have to admit that I'm one of those guys that does as much hardware work at my desk as I do on my workbench.  Probably because I don't have as organized a workbench as others have shown.. ...
I want to start doing data collection "untethered", so I've been looking at how SensiML has implemented data capture over WiFi and BLE.   In order to do data capture over WiFi, SensiML uses a ESP32 UART to HTTP bridge.  Instructions for doing this are located here: https://github.com/sensiml/esp32_simple_http_uart . This uses the Adafruit HUZZAH32 ESP32 Feather board as the WiFi bridge https://www.adafruit.com/product/3405 .   This is a learning experience for me because I've n ...
This is a continuation of my previous post Using SensiML with Arduino Nano 33 BLE Sense - Additional Model Testing .   Now that a model has been built and tested, it's time to deploy it to the device.   Start within Analytics Studio using Download Model:     Need to specify the correct HW Platform.  Here are the targets available in the pulldown menu:     This downloads a zip file that includes a knowledgepack directory with 2 subdirectories - knowledge ...
This is a continuation of my previous post Using SensiML with Arduino Nano 33 BLE Sense - Model Development .   I had suggested in my previous post that I thought the poor performance of my model was due to trying to classify multiple items within a single data sample which might be sensitive to the size and movement of the classification window across the data sample.   Here are is the Confusion Matrix from those tests:   It seemed like a simple test would be to produce tes ...
This is a continuation of my previous post Using SensiML with Arduino Nano 33 BLE Sense - Data Capture .   In preparation to building a model in Analytics Studio, I needed to capture a larger dataset using Data Capture Lab.  I am going to try to recognize motion along each accelerometer axis using data from the accelerometers and gyros.   I have 4 data classes that I showed previously: Idle - no motion UpDown - motion along the Z-axis LeftRight - motion along the Y-axis Forw ...
This is a continuation of my previous post SensiML Toolkit for TinyML .   I watched all of the 10 videos of the Quick Start Tutorial Series  and while they were informative, I found them to be a bit disjointed because they did not follow a single project through all of the steps.  That being said, they have a lot of documentation and some good project examples.  The problem, as always, is being able to find the answers that you need specifically in the documentation . & ...
While I've been recuperating from a back injury, I found an interesting tutorial series for SensiML on YouTube: Quick Start Tutorial Series . The 10 videos take about an hour total.  A good binge watch with the dog .   SensiML, a subsidiary of QuickLogic, has an Analytics Toolkit software suite https://sensiml.com/products/#process that enables building and deploying TinyML (they don't use this term, so possibly I might be incorrect in using it generically).  The toolkit suppo ...