IoT

Cheap DIY Stream deck alternative
3/29/2023

Cheap DIY Stream deck alternative

In this blog post, I share my experience of building a cheap DIY Stream deck alternative using FreeTouchDeck, an open-source project maintained by Dustin Watts. The project saved me hours of writing code and was a ready-to-use project that only required compatible hardware. I used a 2.4in TFT LCD using ILI9341 driver with resistive touch, an ESP32-WROOM-32 bare module, an ESP32 breakout board, and a CH340 Programmer. After some challenges with soldering and programming, the Stream deck alternative was ready to use, and I even used the box that the LCD came in as an enclosure.

DIY ECG/EKG Electrocardiogram
3/7/2023

DIY ECG/EKG Electrocardiogram

I needed an ECG but faced long wait times to see a specialist. I decided to build a DIY ECG device using the AD8232 ECG module and an ESP32-S3 dev module with an LCD screen. After some tinkering, I was able to build a device that read ECG data and displayed it on a screen. I also added a feature to detect the frequency of the ECG data and calculate heart rate via the RR interval in realtime on a browser through websocket.

Safe and Unsafe pins in ESP32 and ESP32-S3
5/29/2023

Safe and Unsafe pins in ESP32 and ESP32-S3

What are the pins that are safe

MomoCoder GGKP A DIY Smart controller
9/20/2023

MomoCoder GGKP A DIY Smart controller

Momocoder GGKP is an open-source Smart controller with an optional Air Mouse feature. The hardware consists of ESP32-S3 Air Mouse: Motion control, BLE connectivity, OLED screen, compact design, 9 macro buttons, customizable for seamless device control. ESP32-S3 Air Mouse is your new go-to gadget for effortless device control. Features: Motion Control: Navigate with a wave […]

ESP32-S3 Pinout for WROOM-1 module
4/13/2023

ESP32-S3 Pinout for WROOM-1 module

It is hard to find one good colour-coded pinout drawing for ESP32-S3 so I made one myself.I will update it with for info as I get time. I plan to make more pin out images for other modules too like ESP32-C3 with detailed pin types.

Esp32 modules
12/22/2020

Esp32 modules

There are several different options to choose from when buying an esp32 Modules. The most common ones I have come across are the following. Espressif / AI Thinker WROOM / WROVER WROOM32U has the smallest footprint among all. WROVER comes with integrated 8MB PSRAM ESPRESSIF ESP32 Modules The footprints are different in size and positioning […]

© 2023 Anil Maharjan