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Step 4: Firmware about LTE
Log from Weather Station With A7670 -- Remote Monitoring
Using HTTP(S) AT Commands, accessing to HTTP server,SerialUSB.println("Maduino Zero 4G LTE CAT1 Test Start!"); SerialUSB.println("Wait a few minutes for 4G star"); delay(3000); sendData("AT", 1000, DEBUG); delay(5000); sendData("AT+CICCID", 1000, DEBUG);...

It All Comes to A Head Soon
Log from Longer LK5 Pro Delirium Build
I'm currently missing two components: My linear rails and a custom-cut bracket to hold everything together. The linear rails arrive in 3 days, but I have no clue how I'm gonna handle the bracket I need CNC'd. If only PCBWay wasn't so expensive...Funny...

Nowhere Near the End
Log from Longer LK5 Pro Delirium Build
My linear rail shipment got delayed by 10 days. I ordered the wrong M3 T-nuts and needed to get non-rotating ones. Luckily those arrive today.I'm missing 9 screws and 8 washers and am currently waiting to ask a friend to get them.I still don't have...

Schematic
Log from "Perpetual" Wristwatch
It's have simple schematic, for save pins I used Charlieplexing(35 components in total): https://en.wikipedia.org/wiki/CharlieplexingIn this project i use for charging 12 light sensor BPW34S, on clear sun one cell make 0.5-0.6 V and ~2 mA, connect its...

Simple plan and next steps
Log from TinyML meets dog training
I will soon reveal what the purpose of the end product is supposed to be, however, for now the journey is the goal. I've become fascinated by machine learning and then about the idea of using it on microcontrollers only about 6 months ago, so it...

Hardware and libs
Log from TinyML meets dog training
For my first trials I decided to use the TinyML kit: which contains Arduino Nano 33 BLE Sense and the OV7675 camera (kit). I use the following libraries on arduino IDE:Arduino Mbed OS Nano Boards v3.0.1Arduino_OV767X v0.0.2Arduino_TensorFlowLite (from...

basic protocol structure
Log from VEVOR diesel heater protocol
Some days ago a friend told me about the heaters from Vevor and after some search I found this page very promising: http://afterburner.mrjones.id.au/ So I hoped the Vevor ones have the same protocol structure and things would be quite easy....

python prototype
Log from VEVOR diesel heater protocol
Today I started to connect the bus to my PC. A USB/USART adapter from FTDI was my choice since I got tons and various PCB's laying around. The FTDI can be configured for RS485 to enable a IO when you're sending data. I tried the interface with the two...

What is an egg?
Log from Wobble
Starting project by learning more about eggs.. I'd like to figure out how to create a nice 3D printed egg shape that can hold a circuit board, battery, and motor assembly. I'll start by printing off some free variants from thingiverse. Ultimately I want...

Egg #1
Log from Wobble
I used this great tutorial to make a threaded egg in Fusion360. I made mine about 5 inches around with an egg-shaped volume inside rather than the cylindrical volume in the video. The 50% scaled test print turned out great and looks like an egg....

Block Diagram
Log from Wobble
The system block diagram is relatively simple. The egg moves using a stepper motor and there is a microcontroller and motor controller used to generate the PWM signals for the stepper. A USB interface allows for re-programming of the microcontroller....

Development boards and wobbling madness!
Log from Wobble
I started writing some programs to control the DRV8825 using a few small embedded boards I had lying around - the Metro by Adafruit and Arduino Uno both of which are based on the ATMEGA328P processor. I went with these because I wanted something...

First egg print!
Log from Wobble
The first full size egg finished printing after 40 hours. This was a fun first attempt and my son loves to kick it around the house. I ordered some rainbow colored filament for the next attempt. Things to change: Decrease wall thickness to no more than...

1080 LEDs in the Palm of Your Hand!
Log from MiniSphere
We're starting to finalize some of the bigger pieces of this project, so we're excited to start sharing our progress! We've got the geometry and LED arrangement set, now we're testing our electrical design and getting started on writing some animations....

Video
Log from Kuk-bot

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