arduino

Hey all,...

I needed some LEDs so that I could track what my data lines were doing. I started with a bunch of LEDs and resistors on a breadboard....

This little power supply board plugs into a ProMini shield stack or the ProMini Backplane boards that I designed. It’s basic but it has a couple of nice features....

I’m using this really nice board, it has a RP2040, a round touchscreen and a Gyro/Acc module all in one (plus a RTC and Battery management). My issue is with the IMU, the QMI8658 is supposed to have a fusion algorithm embedded but I can’t seem to get it to work. Anyone else has tried this? I’m looked at the chip...

I’m trying to use an LIS2MDL ic with an Arduino nano on a custom PCB designed in KiCad. I tried the Arduino example compass script for the ic and it didn’t work. It just prints “Magnetometer Test” and nothing else happens

I got some bread boards and a kit full of resistors, caps, LEDs, etc. On Amazon, and 3 esp32s (dfRobot boards) from digikey. Very exciting! I already blew an LED (current limiting resistor? Never heard of her!)

I had a gap in the wall from where an old monitor mount used to be attached so wanted to make something to cover it up....

cross-posted from laser cutting community !lasercutting : lemm.ee/post/896795...

This is an early version of the board that I created because I was irritated by the fact that there were no shields available for the ProMini. It includes the ability to plug in one of those cheap, Chinese breadboard power supply boards and I stuck a DS1307 real time clock under it. The ProMini goes in the center then you can...

This is the big daddy of Pro Minis. I have a bunch of these in my Arduino bin and in my biggest project, the Maple Syrup machine room that I call the SapMaster....

I have a boat load of these in my Arduino bin and spread around in various projects....

There are a bunch of these in my Arduino bin and in one project or another. My maple syrup machine started on an UNO but ran on a NANO V3 for several years before moving to a MEGA2560 Pro Mini....

I have a few of these in my Arduino bin....

I have a few of these in my Arduino bin....

I was working on a number of projects that used the ProMini as the microcontroller. I was irritated by the lack of shields specifically for the ProMini....

ESP8266 and a 2.4 inch touch screen. The button turns on and off the LED backlight on the screen....

Most of the projects I design start out on solderless breadboards. The one in the bottom of this picture is a ROM switcher and reset circuit for a Commodore 64 that I’m working on. This circuit will fit inside the footprint of a 27256 ROM chip in a 2364 to 27256 ROM adapter....

Help point a noobie in some interesting directions....

cross-posted from: lemmy.ca/post/703695...

This is the machine that runs my maple syrup machine room. The PLC (the large grey box on the left in the second section from the top) runs a MEGA2560 Pro Mini with an ESP32 as a WiFi modem. There are more than 4,000 lines of BascomAVR running on the MEGA2560 and around 800 lines of Sketch on the ESP32....

If your circuit is behaving weirdly, switching on when you touch a wire or move your hand over the circuit you almost certainly have a floating input. You can solve this problem with a pull-up resistor. Many AVRs have built-in pull-up resistors that you can turn on using code....

I built these a few years ago to let me use UNO shields with Pro Minis to speed up prototyping. This was an early version. Later versions had more and more features added until I didn’t need the shields anymore. That’s when my Pro Mini Backplane was born.