Electronics

WLED Digital Clock: Firmware Mods

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Preface While surfing on Thingiverse I found a lot of interesting 7 Segment style Digital Clock projects based on Neopixel strips. All of them was extremely detailed on the hardware side but a little bit poor on the firmware side. Someone added support for an I2C RTC module, someone else was connecting to the web … Read more

[GUIDE] Fysetc S6 v1.2 + Octoprint – Fixing USB power problem

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Preface I’m used to leave my Pi permanently powered and connected to the board and then I (smart) switch on the power supply only when I’ve to print something.Since I received this board, I immediatly noticed that was not present a simple jumper in order to select which 5V should be used for the logic: … Read more

HW-CAN: A Highly integrated USB-CAN Sniffer based on STM32

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I had been looking for this kind of products for a long time without so many good results (maybe I’m not so good in searching :P). Tha main key-features that I was looking for were: Being based on STM32, that is where I have more experience and I can customize and develop my own firmware. … Read more

HW-MODS: A prototype board for the STLINK-V3-MODS

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Since STMicroelectronics presented it, I had been very curious to try it. There where all the specs for being a very usefull thing: a cheap and really small debugger intended to be integrated on every custom PCB that needs onboard debugging capabilities. I have immediatly decided to develop my own PCB in order to get … Read more

HW-DAQ – Project Overview

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Main hardware characteristics: 32 Bit MCU 4x Fully Differential Analog Inputs 4x Single Ended Analog Inputs 8x Isolated I/O Wi-Fi capability MicroSD data logging USB Data communication 20 Pin Expansion I/O Connector Reverse polarity protection Input fuse Protected output supply lines

MySensors iOT Node

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This project is addressed to everyone how wants to build and develop by himselves a cheap and scalable home automation system. The main goal of the project is to develop a simple board for every sensor you can place in a house (temperature, humidity, pressure, dust, motion, LCD, relays).It is designed to be AC mains … Read more

Say welcome to the OpenDAQ

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An open source data acquisition board based on the STM32F4.
Features:
-10x extremely high resolution analog inputs (32bit primary ADC+ 24bit secondary ADC)
-4x low res analog inputs (12 bit embedded ADC)
-4x NPN logic isolated digital output
-2x programmable analog outputs (12bit DAC + op-amps)
-PC connections available over USB or wifi (nrf24 or esp8266)
-2x I2C interface
-4x UART/USART interface
-1x SPI interface (shared with nrf24)
-Expansion GPIO for extra CAN, digital inputs/outputs, 3v3 regulated power supply, usart, i2c connections
-Wide operating input voltage: from 6,5 to 36 Volt

Additionally to the STM32F4 you can use an ESP8266 to develop custom Wi-Fi application. It is interfaced with the micro by uart.

More information about price, availability and a getting started guide will be made available soon..

[UPDATE]: Link to get $5 of New User Free Credit Bonus on PCBWay website: Invitation Link.

WallText – LED Matrix Notification System

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The aim of the project is to create a system that allows you to show the smartphone’s notifications directly on a led matrix Used materials: Arduino Uno (Aliexpress link) Bluetooth Module HC-06 (Aliexpress Link) LED Matrix (MAX7219 driver) (Aliexpress Link) Involved softwares: 1)Arduino IDE 2)Android Studio Arduino libraries used: MD_Parola (download link) and MD_MAX72XX (download … Read more