@HexFud

Devlog #03

Finally the PCB is completely routed and i also mad the 3d model for my project. Now i need to upload everything on github and write a BOM

Devlog #02

I have done the final checks of the shematic and now it is all set to become a pcb! I did some changes in the meanwhile.

• In the first place I have added a 40 pin flat display connector and a 4 pin one for the touch
• I added loop stabilizing
• I fixed the anti-aliasing filter to bring the cut at 33MHz

I did some important changes regarding the power supply. Before I used 10V for some components but that tension have vould burned them! So i added a new label that brings 5V into the cricuit

Devlog #01

This is my brand new (and by far most complex) hardware project. This is a Digital Storage Oscilloscope on a single PCB and powered entirely by USB-C.
I have almost finished designing the schematic but it surely needs improvments!

Key Specifications

• Analog Bandwidth: 20 MHz (-3dB).
• Real-Time Sampling: 100 MS/s at 8 Bit
• Full Analog Front-End (AFE): Standard 1 MΩ // 30 pF BNC input with ESD diode clamps, high-Z FET input buffer (ADA4817), programmable gain amplifier for Volts/Div scaling (OPA820 + Mux), DC offset injection, and a 30 MHz Sallen-Key anti-aliasing filter.
• Hardware Capture Engine: A dedicated 100 MSPS pipeline that wirtes samples as fast as 10ns async SRAM.
• MCU & UI: An STM32H7 (480 MHz Cortex-M7) reads the captured data via an FMC bus, handling waveform math, rotary encoders, and rendering to a 7-inch touchscreen display.
• Clean Power Delivery: All dual low-noise analog rails (+10V / -10V) and digital rails (3.3V and 1.2V core) are generated on-board from a single 5V USB-C input.

Now I need to do some final checks on the shcematic and then straight to the PCB

Yippie ! Now the PCB looks more “filled”, I implemented new security measures and checked every connection to be sure it will work after fabbricating it

Big update! I thought about the project and I dind’t really like it that much so I did an upgrade: now the bench power supply is smart ! I added an esp32, removed standard potentiometers and replaced them with rotary encoders. I sitll need to complete the shcematic and organize it but this is a big step ahead!

Checked the final schematic and PCB and made some modifications. I also designed the case for it (entirely 3d printable.

I am working on a simple and low cost bench power supply that can be affordable and safe to use. I started to make the schematic and the pcb.

Devlog #07

Wrote the complete documentation and uploaded all the files on github. I worte a very detailed description about this project and also the technical limits. If I will be able to gain all the materials to build the project the readme will have significant improvments like testing single components, their correct waveforms with an oscilloscope and then a full firmware for the arm. I also added more serigraphy manually to the PCB to make connectors simpler to find

Devlog #06

After many hours of work in CAD, the 3D model of the 6-axis robotic arm is finally done. I carefully chose the motors based on the weight they need to lift, making sure the arm has enough power while staying balanced. I also added key safety features, like rotation limits on each joint to prevent collisions and an integrated base that holds the custom PCB with a cooling fan.

Devlog #05

The PCB is FINISHED ! Finally after 3 hours of cabling the components it is ready. Now i need to start 3D modelling for the effective robotic arm and maybe later add and expasion to the board so people can add their own things to it.

Devlog #04

New update. Just finished placing all the component on the PCB but now it comes the hard work, also i am trying to keep things as smaller as possible but i think that this size is good. Now i will start wiring up the components and i think this will take a lot of time but we’ll se soon !

Devlog #03

Big update !!! Finally finished the schematic, it has been a long journey assuring every connection and improving the safety of the circuit. I just finished assining the footprints, so now it comes the PCB ! Here’s a little sneak peek at my MCU

Devlog #01

Started to wire up some components in the Power and MCU fields. I am also trying to make the schematic a lot cleaner than my other projects because this is a big one :) Stay tuned for more devlogs!

Devlog #00

This is the start of my new project ! I am going to build a full 6 axis robotic arm completely from scratch developing my own PCB with my own 3d design. My arm will have a lot of features like ai recognition, auto calibration, quick swap for tools and many others !

Devlog #01

Added new commands and fixed the weather bug that wasn’t fetching the correct details

Hex Bot is a Slack bot running in Socket Mode that responds to a set of slash commands. It can check if it’s online, tell a random joke or cat fact, share a fun fact or inspirational quote, fetch the current weather for a given city, roll a dice, and list all available commands.

Devlog #11

Finally added more applications!
What i added so far:

1. Calendar
2. Media Player where you can upload media (video included) and see them into the webos
3. Paint, if you feel creative than you can draw something :)
4. Clock

I fixed some bugs with the windows drag and the drag and drop system between folders, also added more wallpaper styles