InEquilibrio01 is a compact self-balancing robot that maintains its upright position using a PID control loop.
It is built around an ATmega328 microcontroller running at 8 MHz using its internal oscillator, and uses two inexpensive DC gear motors for actuation. An MPU6050 sensor, which integrates a 3-axis gyroscope and accelerometer, provides real-time feedback on the robot’s orientation.
A lightweight PID library enables real-time tuning of control parameters, allowing the robot to adjust its posture dynamically. PID coefficients can be programmed via PC using a bluetooth adapter (such as the HC-05) and a simple host-side library.
Although the motors are quite basic and relatively slow, making smooth balancing a challenge, the system performs reliably and demonstrates the core principles effectively.
Power is supplied by a 7.4 V LiPo battery, regulated by a DC-DC buck converter that steps the voltage down to 5 V for the microcontroller and electronics.
The DOD FX-17 is a compact pedal that functions as both a wah and volume pedal, with the added bonus of an expression output. Unlike typical treadle designs, this pedal features a proprietary control system, giving it a sleek, low-profile footprint and a smooth, responsive feel underfoot.
A friend of mine gives me this pedal cause it suffers of a mechanical noise issue.
In this particular case, the unit emitted a noticeable squeaking sound when the pedal was rocked back and forth.
The fix was surprisingly simple. After inspecting the pedal’s mechanics, it was clear the pedal joint lacked lubrication, leading to friction and the resulting noise. I've try with some drop of oil without solving this. I have to disassembly the join and give it a small application of grease at the pivot points of the pedal. This immediately resolved the issue. The motion is now silent and smooth, restoring the pedal to full working condition without impacting its tone or optical response.
MIDI adapters are essential tools for musicians and audio enthusiasts. They act as bridges between MIDI devices, allowing seamless communication.
In this project, I’ll share the schematic of the adapter design along with a custom PCB I’ve developed. The goal is to create a compact, functional MIDI adapter suitable for studio and live environments.
It features:
MIDI In: For receiving signals from external devices.
MIDI Out: For sending processed MIDI signals.
MIDI Through: To pass MIDI signals directly to other devices, with an optional splitting mechanism for multiple outputs.
MIDI though can be cut away if you want.
It can be drawn at 3.3V or 5V and it will helps you connecting your microcontroller to a MIDI device.
Find below a quick guide to enable copy & paste on Windows O.S. installed as VM on Proxmox.
On you Proxmox hypervisor shell you have to install the Spice VD Agent
apt install spice-vdagent
Then you have to enable it
systemctl enable spice-vdagent
systemctl start spice-vdagent
Then you have to set the Display option as Standard VGA, with clipboard VNC copy, you can do this by the Proxmox gui, or via command line using the following command:
I've a MacBook Pro A1278 that I don't use that much.
Last time I've power it on it has a strange issue with the display. It turn off after a while. And after a couple of days of usage it also start to do weird things. Like if it's distorted.
So I decide to open it and luckily I've find it just a little bit of crust on a component next the display connector.
It just takes a little bit of isopropyl alcohol and time to clean this and make this MacBook working again.
Not a big repair, but still one. So maybe if some other has this same issue, you can go and check for that component.
One of the thing I was missing is sending email from it, so I decide to setup postfix (https://www.postfix.org/) to do this.
The smtp mail service I've used for this is Google gmail. But you can use any other smtp server.
All the commands shown below has to be run from the node shell.
First you have to install some packages:
apt install -y libsasl2-modules mailutils rsyslog
Then you have to add a password file
nano /etc/postfix/sasl_passwd
Inside the file we are going to put the relay host, a username, and a password. As for the password, you are using google gmail you have to enable 2-Step-Verification and then add an App Password, find the guide here: https://support.google.com/accounts/answer/185833?hl=en We are going to use the created app password for our credential. Note that this password usually contains spaces that we must remove on the sasl password file.
The content of the file should look something like this, here you should replace with your credentials
