ESP32-S3-WROOM-1, ESP32-C3-WROOM-2 and ATTinyXX4 – 3 in one development board
4/2/2023

ESP32-S3-WROOM-1, ESP32-C3-WROOM-2 and ATTinyXX4 – 3 in one development board

Here is a custom-designed 3-in-one development board that I recently designed. The board supports any of the 3 MCUs, Also ESP32 should work but the pinouts will be different. The board includes a 3.3v LDO regulator, and USB micro, with native USB for ESP32s. Pinout for UART as well as UPDI for ATTiny. Two headers […]

DIY Auto sleep feature for a Cheap Multimeter (without a microcontroller)
3/29/2023

DIY Auto sleep feature for a Cheap Multimeter (without a microcontroller)

This is a DIY project to make your cheap Multimeter which you forget to turn off and the next time you try to use it and the battery is fully drained. That happened to me a lot. This circuit can be used on any low-power device, not just a multimeter.

Serverless CI/CD NodeJs Engine incompatibility
3/8/2023

Serverless CI/CD NodeJs Engine incompatibility

Serverless CI/CD build error serverless-*@*: The engine “node” is incompatible with this module. Expected version “>=14.18.0”. Got “12.22.11”
error Found incompatible module.

Build SuDoKu game using ReactJs
3/19/2022

Build SuDoKu game using ReactJs

I recently thought of creating a SuDoKu game using JavaScript. Having played the classic game and enjoyed it in the past, I did not think of how complex the process of generating an instance of a game would be in the beginning. I quickly realized even after generating the random completed state successfully, creating a […]

How to use Neo4j recommendation engine in your GatsbyJs static generated site
11/15/2021

How to use Neo4j recommendation engine in your GatsbyJs static generated site

We have the Ne4j graph database running and the Cypher query ready to get the recommendation for every drink. We will need an Apollo server running in front of it to enable graphQL. GatsbyJs will connect to that graphQL endpoint during the build time to query for the recommended/similar drinks while building each drink’s detail page.

Implementing cocktail recommendation engine using neo4j
11/14/2021

Implementing cocktail recommendation engine using neo4j

A recommendation engine can give site visitors an opportunity to discover the most relevant content on the site depending on the page user is browsing. A content publisher or a store can benefit from extra views/exposure or upselling.

© 2023 Anil Maharjan