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  • On the pursuit of a lower deepsleep consumption

    Sadly even if I tried hard, it was very challenging if not mission impossible to get a deepsleep of 10 uA, eventhough in the MCU datasheet might say that it consumes as low as 1 uA when it’s on deepsleep.And why is that?For a variety of reasons all quite hard to grasp. But the most…

  • On driving Eink displays

    There are 2 different known ways to drive them that are widely known:– SPI epapers, can be driven with this popular interface that is supported from Arduino, to a wide variety of MCUs– Parallel epapers also called einks like the ones that are used in Kindle & another e-readers Let’s start with the most easy…

  • External Flash IC test on ESP32C6

    External Flash IC test on ESP32C6

    In last board we send to fabrication the C6 ULP project I’ve failed miserably. Why?The board routing and schematics was Ok! But I’ve wrongly mistaken the ESP32C6 MCU using a 40 pin QFN that does not come with built in flash.You can find the open source KiCad files in this repository.Sadly that is the bad…

  • Low power ULP C6 PCB

    Low power ULP C6 PCB

    This was a great idea from my friend Larry Bank. But what is the ULP and how can we benefit from it?In Espressif own words: And what are the possibilities to use this small ULP processor while the rest of main CPU sleeps using the smallest possible power consumption? With this points in mind the…

  • SHARP Controller LCD based on ESP32S3

    SHARP Controller LCD based on ESP32S3

    The evolution of a simple C3 controller board into a full fledged ESP32S3 “Silicon only” small PCB that can control 400×240 LCDs and all their smaller models.First LCD controller I designed was a small clock size 128×128 pixels sharp LCD inspired by my friend Larry Bank who also likes this display technology. The evolution that…

  • Making a epdiy v7 Kaleido clone – part I

    Making a epdiy v7 Kaleido clone – part I

    In this post we are going to clone the epdiy v7 Hardware repository and make a custom version to control a Eink Kaleido 6 inches display.The existing epdiy v7 can control this epaper already but we want to make a PCB clone specifically for this display, removing other connectors and adding additional ones for Touch…

  • Moved to Barcelona

    Well it was hard, frustrating and a very tiring experience to say the least. But after finally signing a one year Contract for the apartment, and many “Nos” for other’s we’d liked, but we didn’t qualify since we do not have any spanish work…we are settling down nicely and already got high speed internet installed.Now…

  • Espressif ESP-Mesh updates their App with a new UX

    About a month ago I started learning to use ESP-IDF and got very interested in Espressif Mesh Lamps. It’s a lot of fun for me to create my own ESP-Mesh LEDs lamps with this technology. But as with everything I touch that is open-source, apart of being a user, I try to collaborate and made…

  • FS2 camera from Blender to production

    In this entry, I wanted to document what is the process of making one of this cameras, starting from the 3D – model to the end product where you turn it on and connects to WiFi ready to take pictures. After removing the support and sanding the round columns the first thing is to connect…