Ezequiel (Kimi) Aceto — Blog

Shadowing Lottie

Fri, 30 Aug 2024 00:00:00 GMT

[Lottie](https://github.com/airbnb/lottie-android) is a powerful library that parses [After Effects](https://www.adobe.com/es/products/aftereffects)…

The Desktop is Dead! Long live the Desktop!

Tue, 23 Mar 2021 00:00:00 GMT

So it seems like desktop applications are dead, or the were... I don't know. I'd rather a full native app instead of a web-based app. EVERYWHERE! And that…

Getting Started with Flutter for Linux

Wed, 03 Mar 2021 00:00:00 GMT

This post will not cover how to install Flutter on Linux, that can be easily done reading the following [official…

Scanning your Java/Kotlin project with SonarQube

Thu, 18 Feb 2021 00:00:00 GMT

In the past year as a Technical Leader at Santander I have seen several a lot of code challenges submitted by applicants. All of them were small apps with…

Headless Raspberry Pi configuration

Fri, 23 Oct 2020 00:00:00 GMT

Settings up a Raspberry Pi it's easy when you have an HDMI display, a USB keyboard and mouse in oder to access the terminal or you favourite Desktop, but…

Getting Started with CircuitPython

Sun, 05 Jul 2020 00:00:00 GMT

[CircuitPython](https://circuitpython.org) is a spin-off of the well-known [MicroPython](http://www.micropython.org). An efficient implementation of Python…

ESP32: Using the Internal Flash File System

Thu, 23 Apr 2020 00:00:00 GMT

The ESP32 contains a lightweight filesystem specially design for microcontrollers called Serial Peripheral Interface Flash File System. This File System,…

Rollback from MicroPython to Arduino on ESP32

Wed, 22 Apr 2020 00:00:00 GMT

I hope you find MicroPython is VERY useful and perfect for you. But just in case it doesn't, or for any reason you want to rollback to Arduino. Here is how…

MicroPython on an ESP32

Sun, 22 Mar 2020 00:00:00 GMT

ESPTools and Adafruit AMPY are required. Both can be installed using pip3. The recommended version of Python on the host is Python 3.7

Setting up ESP32 development environment in Linux (with Arduino IDE)

Sun, 22 Mar 2020 00:00:00 GMT

Download Arduino IDE from [https://www.arduino.cc/en/Main/Software](https://www.arduino.cc/en/Main/Software). The latest version when writing this a article…

Fibonacci Sequence (or when NOT to use recursion)

Sat, 29 Feb 2020 00:00:00 GMT

For those of us who study computer science and algorithms, the study of [recursion](https://en.wikipedia.org/wiki/Recursion_\(computer_science\)) has an…

Listing all endpoints with Gorilla Mux Router

Sat, 15 Feb 2020 00:00:00 GMT

When adding different handlers to a Router, each one with its own base path (sub routing), it comes handy to list all the endpoints declared, not only as a…

How to make a WhatsApp Bot in Go [Part 3 of N]

Thu, 13 Feb 2020 00:00:00 GMT

Processing incoming messages, either text or media, is one of the fundamental features a Bot must implement. In this post we will explore how to do this.

How to make a WhatsApp Bot in Go [Part 2 of N]

Tue, 11 Feb 2020 00:00:00 GMT

In this second step, we are going to analyse how to use the API of [go-whatsapp](https://github.com/Rhymen/go-whatsapp) described in the [previous blog…

How to make a WhatsApp Bot in Go [Part 1 of N]

Mon, 10 Feb 2020 00:00:00 GMT

Such a long time since I've published my last post, I'm back with a simple and small post: How to make a simple Whatsapp Bot in Go.

iBeacons - Let your Mac broadcasts

Thu, 20 Feb 2014 00:00:00 GMT

iBeacons are built on top of Core Bluetooth so I wondered whether it would be possible to use a MacBook running Mavericks to create an iBeacon transmitter.…

Using Leap Motion in an Objective-C project

Tue, 03 Sep 2013 00:00:00 GMT

I have started learning about Leap Motion and decided to make a simple app in Objective C in order to test it. The first thing I realise it is that there is…

BeagleBone Black and Linux Kernel 3.8 with Android support

Thu, 22 Aug 2013 00:00:00 GMT

cd ~/

Building Android for BeagleBone Black with Kernel 3.2

Thu, 22 Aug 2013 00:00:00 GMT

Note: SGX (hardware-accelerated OpenGL) is supported only in Kernel 3.2

Compiling Android with Kernel 3.8

Thu, 22 Aug 2013 00:00:00 GMT

Note 1: SGX is not yet supported on Kernel 3.8 so there is no hardware-accelerated OpenGL on this release./pre>

U-Boot for BeagleBone Black

Thu, 22 Aug 2013 00:00:00 GMT

Note: Use this guide only if you are building Android with Kernel 3.8

Increasing Java Heap size in Android from source code

Tue, 20 Aug 2013 00:00:00 GMT

Under /frameworks/base/core/jni/ there is a file called AndroidRuntime.cpp where the Dalvik VM parameters are set. You can do a search over the file for…

Installing busybox (for Android) on BeagleBoard

Wed, 14 Aug 2013 00:00:00 GMT

**BusyBox** provides several stripped-down [Unix tools](http://en.wikipedia.org/wiki/Unix_tool "Unix tool") in a single [executable…

ADB over Ethernet in BeagleBoard

Fri, 09 Aug 2013 00:00:00 GMT

First of all we need to ensure that we have an Ethernet connection up and running. Connect your PC to the Beagleboard using a USB to Serial converter. USB…

Beagleboard xM & native FTDI VCP driver

Fri, 09 Aug 2013 00:00:00 GMT

cd ~/rowboat-android/kernel

How to setup a Blackberry 10 for development over WiFi

Mon, 01 Apr 2013 00:00:00 GMT

[![](http://www.ezequielaceto.com.ar/techblog/files/2013/04/BB10_setup1-768x1024.jpg "BB10 Setup for Development -…

FT232R (Java) Driver for Android OS 3.1+

Fri, 08 Mar 2013 00:00:00 GMT

[FT232R Driver](http://www.ezequielaceto.com.ar/techblog/wp-content/uploads/VCPLib.zip) [PS2Pad (Test app for FT232R…

Android 4.1.2 Image for Beagleboard XM

Wed, 06 Mar 2013 00:00:00 GMT

This Image can be loaded into an SD Card (4GBytes min). It can run entirely from the SD Card, or the Android OS can run from a USB Flash, and U-Boot,…

Basic SysInfo for Android

Tue, 05 Mar 2013 00:00:00 GMT

Basic project used in a Beagleboard XM. It reports CPU, ABI, OS Version, Maunfacturer, Device, and more. Screenshot of the app in a Motorola RAZR i (Intel…

Setting up ADB on Beagleboard

Mon, 04 Mar 2013 00:00:00 GMT

Enable USB Debugging on The Beagleboard

Unlocking Motorola RAZR i (XT890) bootloader

Sat, 23 Feb 2013 00:00:00 GMT

C:homekimisdkandroidplatform-tools>fastboot.exe oem get\_unlock\_data < waiting for device > ... (bootloader) 3A35120005260968#53304237373054 (bootloader)…

Loading rootfs from USB in Beagleboard

Mon, 26 Nov 2012 00:00:00 GMT

1) Format a USB Flash Drive with EXT4 File System 2) Decompress rootfs.tar.gz into USB Flash Drive `cp rootfs.tar.gz /media/USBDrive` `cd /media/USBDrive`…

Setup Development Tools for Android

Mon, 26 Nov 2012 00:00:00 GMT

- Eclipse IDE for Java Developers (at least Eclipse 4.2 - Juno) - [link](http://www.eclipse.org/downloads/ "Eclipse Download")

Android Jelly Bean (4.1.2) for Beagleboard xM in Photos

Mon, 05 Nov 2012 00:00:00 GMT

[![](http://www.ezequielaceto.com.ar/techblog/files/2012/11/bb-xm_hardwarwe.jpg "Beagleboard…

Building Android Jelly Bean (4.1.2) for Beagleboard xM

Mon, 05 Nov 2012 00:00:00 GMT

- Ubuntu 12.04 LTS - AMD64

Simple log for iOS

Mon, 20 Aug 2012 00:00:00 GMT

In every method two very important variables can be found. One is already known by many iOS dev, and it is 'self'. The other one is '\_cmd'. This last one…

Passcode Lock Screen for iOS

Sun, 24 Jun 2012 00:00:00 GMT

I have designed a small library (with its test project) that lets you implement a passcode lock screen on iOS. The library is compatible with iPod Touch,…

SVN Tip

Tue, 24 Jan 2012 00:00:00 GMT

//search and delete .svn `find` `. -depth -name .svn -``exec` `rm` `-fr {} ;`

I want to boot my Kernel on a real machine

Sun, 23 Oct 2011 00:00:00 GMT

Testing and running the Kernel with QEMU is nice, it is faster for developing but it is not what we want. We want to run things in real hardware.

Monolithic or Micro Kernels

Sun, 23 Oct 2011 00:00:00 GMT

The Kernel is that tiny but very important part of the Operating System that acts as bridge between the applications and the low level resources of the…

Starting from Scratch... (It's a nice day for writing a Kernel)

Sun, 23 Oct 2011 00:00:00 GMT

As most of us wished when we were kids, I also wanted to have my own OS. In those days, when I was nearly 12, it was not easy to find somebody that teaches…

Makefile for the Simple C Kernel

Mon, 17 Oct 2011 00:00:00 GMT

Just to do things in the right way...

Simple Kernel in C

Mon, 17 Oct 2011 00:00:00 GMT

Sometimes it's better to take one step back in order to take two step forwards. In the long journey until a get a simple Kernel in C++, I decided to start…

Self Powered USB to RS232 Converter

Sat, 10 Sep 2011 00:00:00 GMT

A FT232R chip plus a Max3232 (extended voltage range) make this self-powered USB to RS232 (with TTL outputs also) that only consumes 90mA. As the Motorola…

Android USB Host + USB VCP Driver [Part 3]

Sat, 03 Sep 2011 00:00:00 GMT

Once the prototype works and could establish a great communication between the Xoom and the FT232 IC, I decided to separate the project in order to let…

Android USB Host + USB VCP Driver [Part 4]

Sat, 03 Sep 2011 00:00:00 GMT

On one of the previous parts, I show how to start an Activity when the USB device was plugged. Using that technique, the driver can be initalized, if it was…

Android USB Host + USB VCP Driver [Part 1]

Mon, 29 Aug 2011 00:00:00 GMT

I have connected a USB device that creates a USB VCP profile to my Motorola Xoom in order to enable my Xoom apps to interface with RS232 devices. My small…

Android USB Host + USB VCP Driver [Part 2]

Mon, 29 Aug 2011 00:00:00 GMT

(Un)fortunately I have just signed a NDA (Non-Disclosure Agreement) with FTDI Chip in order to develop the Android version of their FT(2)232 chip.…

Golden Tip for iOS

Fri, 29 Jul 2011 00:00:00 GMT

This line of code is definitely as sweet as elegant. \[\[\[self view\] subviews\] makeObjectsPerformSelector: @selector(removeFromSuperview)\];

How Android sees an attached USB Device

Wed, 27 Jul 2011 00:00:00 GMT

In the long way that my project must walk, I decided to start testing some small things in order to understand how the Android USB Host API and Open…

Debugging Android wirelessly

Tue, 26 Jul 2011 00:00:00 GMT

Recently I flashed my Motorola Xoom with Android 3.2 in order to start playing with USB Host API and Open Accessory API, but both functionalities are…

UC3B @ High Speed

Mon, 13 Jun 2011 00:00:00 GMT

From time to time I forget how to set the UC3B CPU to run at full speed. The EVK1101 comes with a 12MHz crystal, and I use the same crystal for my board…

A picture is worth a thousand words...

Sat, 14 May 2011 00:00:00 GMT

Running Python from a SSH session on the Pre2 ![](http://www.ezequielaceto.com.ar/techblog/wp-content/uploads/Python-from-pre2-ssh.png "Python running on…

webOS template project + Python + PyGame = Happy Developers

Sat, 14 May 2011 00:00:00 GMT

So I have created a sample C project for webOS 2 that bundles all your python files into an ipk (so you can distribute this app using the App Catalog) and…

Python and PyGame meet WebOS =)

Thu, 12 May 2011 00:00:00 GMT

The PalmPDK includes a toolchain of GCC in order to build C and C++ applications, and Python is a nice one. The idea behind this is to allow webOS to run…

First contact with AVR Studio 5 (beta)

Sat, 30 Apr 2011 00:00:00 GMT

After years of being the lastest (and only) official IDE for AVR microcontrollers, Atmel decided to launch a new version of the famous AVR Studio. Of course…

webOS low level programming - basic app

Sat, 12 Mar 2011 00:00:00 GMT

For Windows and Mac OS, Palm provides a low level SDK called Plug-in Development Kit (PDK) which allows you to develop C and C++ native applications or…

First webOS (web) App

Mon, 07 Mar 2011 00:00:00 GMT

So finally I have started to play with some programming on the Palm Pre 2. It is interesting to find that web applications runs as smooth as native onces in…

a Caller ID that speaks (for Android)

Sat, 27 Nov 2010 00:00:00 GMT

So I have just arrived home and while preparing a tuna fish sandwich somebody calls home and the answer machine started to say the number. This is something…

Bluetooth in pre-Android 2.0 devices

Tue, 23 Nov 2010 00:00:00 GMT

Android OS introduced Bluetooth as an open API in version 2.0, but early versions like the well known Donut (1.6) and, one of the most famous in Motorola…

Software Framework comes to rescue: FAT32

Mon, 22 Nov 2010 00:00:00 GMT

Embedded applications make intense use of information these days, both for reading configurations and writing logs and process' results. Developers tend to…

Simple 2D Graphics functions

Fri, 27 Aug 2010 00:00:00 GMT

So finally I have uploaded a first release of my 2D graphic engine for microcontrollers. Even though I would like to make it portable to several displays…

Blackberry's Pearl controlled with ARM7

Sun, 22 Aug 2010 00:00:00 GMT

I found really interesting a small protoboard created by Sparkfun that allows you to easily connect a Pearl (the one made famous by RIM / Blackberry…

iPhone App for AVR Development

Thu, 05 Aug 2010 00:00:00 GMT

There is an infinite number of AVR website that has configuration wizards for UART, Timers and SPI, but I didn't find an iPhone application that can do…

ARM7 Programming under Mac OS X: Part 1 - ISP

Wed, 30 Jun 2010 00:00:00 GMT

Programming on a Mac is quite similar as you do on a Linux PC, and developing for ARM7 is not the exception. In this first post I'll show you how to setup…

ARM7 Programming under Mac OS X: Part 2 - GCC and Eclipse

Wed, 30 Jun 2010 00:00:00 GMT

Even though OS X default IDE is XCode (for C, Objective C, Java) and the fact that we can use XCode for programming an ARM7 MCU, using Eclipse is great…

AVR32 Software Framework Drivers: USART

Thu, 01 Apr 2010 00:00:00 GMT

[](http://www.ezequielaceto.com.ar/techblog/wp-content/uploads/2010/04/select_framework_drivers1.png)As we get into AVR32 programming it's unavoidable to…

AVR32 UC3B Hello World!

Mon, 29 Mar 2010 00:00:00 GMT

Inside AVR32 Studio I'll create a new project (File -> New -> AVR32 Example). As I'm going to use the EVK1101 as my base development it may be a good idea…

The AVR32 UC3B Platform

Mon, 29 Mar 2010 00:00:00 GMT

The AVR32 is not only a microcontroller, it's a complete development platform that works smoothly on Linux and Windows, and may be OSX without too much…