How to Test a Bipolar Transistor
April 27, 2026
Having a hard time sorting transistors as good or bad? Read through this article on how to test a bipolar
Blog
Find all our blog content, with a large range of tutorials and handy tools.
Latest Articles
Filter
- All
- Adafruit Feather
- ADC
- Arduino
- Artificial Intelligence (AI)
- Bluetooth
- C Language
- CAD/CAM
- Camera
- Circuit Python
- Components
- DAC
- Digital Audio
- Digital Clock
- Displays
- DIY Robot
- E-textile
- Electronics
- ESP-IDF
- ESP32
- FreeCAD
- FreeRTOS
- General
- General
- Handy Tools
- IDEs
- Infrared
- Kits
- Lighting
- Linux
- Microcontrollers
- Motor
- News
- NodeMCU
- PCB Design
- PCB Design
- Pico
- Power
- Programmers/Debuggers
- Programming
- PWM
- Python
- Radio
- Raspberry Pi
- RFID
- Sensors
- Serial Interfaces
- Shift Registers
- STM32 Cube IDE
- Timing Control
- Tutorials
- Uncategorized
- Visual Studio Code
- Wireless
- All
- Adafruit Feather
- ADC
- Arduino
- Artificial Intelligence (AI)
- Bluetooth
- C Language
- CAD/CAM
- Camera
- Circuit Python
- Components
- DAC
- Digital Audio
- Digital Clock
- Displays
- DIY Robot
- E-textile
- Electronics
- ESP-IDF
- ESP32
- FreeCAD
- FreeRTOS
- General
- General
- Handy Tools
- IDEs
- Infrared
- Kits
- Lighting
- Linux
- Microcontrollers
- Motor
- News
- NodeMCU
- PCB Design
- PCB Design
- Pico
- Power
- Programmers/Debuggers
- Programming
- PWM
- Python
- Radio
- Raspberry Pi
- RFID
- Sensors
- Serial Interfaces
- Shift Registers
- STM32 Cube IDE
- Timing Control
- Tutorials
- Uncategorized
- Visual Studio Code
- Wireless
Serial Adapters and Interface Modules
Trying to find a good USB to Serial, RS485, I2C, SPI, or other adapter interface? Look up different kinds of serial interface modules here. Introduction ...
Read More →
ESP32 PCB Design: Routing your Board
Create a finished ESP32 PCB design by placing the parts and routing your board. Introduction Last time, you were making a schematic and preparing your ...
Read More →
ESP32 PCB Design – Introduction and Guidelines
Read through this article if you’re interested in making your own PCB design for your ESP32 modules. Introduction Creating a PCB for a wireless module, ...
Read More →
ESP32 PCB Design – Schematic Layout and Preparation of PCB
Learn how to make a basic schematic layout and prepare your PCB through this ESP32 PCB design series. Introduction Previously, you’ve had an introduction on the ...
Read More →
Easy EDA PCB Design – PCB Layout
Continue your Easy EDA PCB design journey by learning how to do PCB layout. The Easy EDA PCB Layout Process Last time, you were introduced ...
Read More →
Easy EDA PCB Design – Intro & Schematic Entry
Get to know this easy-to-use and ease-of-manufacturing tool called Easy EDA PCB design. Introduction Previously, you’ve learned about the popular open-source PCB design tool called ...
Read More →
Untangle your PCB Wiring: Route with the X-Y Rule PCB Design Process
If you are having a difficult time routing your PCBs, the X-Y rule PCB design technique may make it easier for you. Introduction Routing a ...
Read More →
How to Play a WAV File on STM32
Start playing WAV files on your STM32 devices by following this detailed guide. INTRODUCTION By this time, you should have learned about I2S, how to set I2S ...
Read More →
All Posts
Build a DIY Xiaozhi AI Otto Robot Personal Assistant (Part 3)
April 20, 2026
Learn how to operate your Xiaozhi AI Otto Robot through this detailed tutorial. Otto Robot Basic Operation The Wake Word
Build a DIY Xiaozhi AI Otto Robot Personal Assistant (Part 2)
April 13, 2026
Ready to assemble your Xiaozhi AI Otto Robot? Find the detailed instructions here. Assembling the Body The main part that
Build a DIY Xiaozhi AI Otto Robot Personal Assistant (Part 1)
April 6, 2026
Wanting to build your own personal robot assistant, but don’t know where to start? Find the steps here to create
ESP32 Voice Recorder
March 30, 2026
Use your I2S microphone to record voice and output that voice to your I2S DAC Audio amplifier, creating an ESP32-S3
I2S Audio on the ESP32-S3
March 23, 2026
Wanting to implement digital audio on your ESP32-S3? Learn more about running I2S on an ESP32S3 dev board through this
Xiaozhi ESP32 Programming and Configuration
March 16, 2026
Ready to program and customize your Xiaozhi ESp32 voice assistants? Find the steps here. (Note: This article has gone through
How Do Hardware Voice Assistants Work?
March 9, 2026
How do voice assistants work?Interested in making your own? Know first the processes involved, here. Introduction Hey Google! Alexa! Siri!
Easy Xiaozhi AI ESP32 Voice Assistant
March 2, 2026
Check out this easy-to-make ESP32 voice assistant utilizing the Xiaozhi AI Chatbot. Introduction Last time, you learned about DIY hardware
CAN Bus on STM32 Blue Pill
February 23, 2026
Start learning CAN Bus programming using the STM32 Blue Pill here. Introduction Last time, you learned about CAN bus programming in