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ESP32

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We don't need no stinking badges - Or maybe we do? Arduino Build Badges

Add GitHub build badges to your Arduino projects and make your code more robust, while alerting you of any issues. Learn how to set up GitHub actions and create a simple workflow for your ESP32 project.
31 March 2023

Energy Scavenging - Can we keep our electronics running indefinitely?

Find out how turning to energy scavenging and tweaking code in the ePaper weather display, powered by an ESP32, helped extend battery life and potentially make it run indefinitely with solar power during Scottish winter months.
23 March 2023

A Public GitHub Repo != A Support Contract

The perils of publishing public GitHub repos and dealing with the constant questions from users who forget that maintainers have other commitments can be overwhelming. Sharing code and seeing it being used is rewarding, but it's vital to remember the motto 'Cloners beware!' as one can't always be available for troubleshooting.
06 February 2023

Picking up Free Lithium Cells Off the Street and Making them Safe for Use

Find out how to salvage lithium cells from disposable vape devices, test battery capacities, and make them safe for your DIY projects, while helping the environment by recycling these discarded devices.
16 July 2022

The PCBs are in production - what have I messed up?

Take a look at the design process of a seven-segment clock using both high-voltage and 3V LED filaments, made using an ESP32 microcontroller and unique driver chips.
06 February 2022

ESP32 I2S DMA Settings - dma_buf_len and dma_buf_count Explained

Learn how to optimize I2S audio and DMA parameters: dma_buf_count and dma_buf_len! Understand the trade-offs between latency and CPU load, as well as memory usage and buffer space allocation.
20 April 2021

DIY Alexa With the ESP32 and Wit.ai

Create your own DIY Alexa using the ESP32 and Wit.ai with this step-by-step tutorial. Learn how to build a wake word detection system, audio capture and intent recognition, and intent execution to construct a complete voice-activated device.
15 October 2020

ESP32 Audio Input - MAX4466, MAX9814, SPH0645LM4H, INMP441

Learn how to integrate various microphones such as MAX4466, MAX9814, SPH0645LM4H, and INMP441 with ESP32 microcontroller for both analog and digital audio recording. Discover the pros and cons of each microphone and how they can be utilized in projects requiring high-quality sound sampling.
12 September 2020

Self Organising WS2811 LEDs

Learn how to transform a bundle of addressable WS2811 LED strings and an ESP-CAM board into organized lighting using an ESP32 dev board and JavaScript image processing. This creative project can support any addressable LEDs with the FastLED library and some minor code adjustments.
05 June 2020
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