This is a VGA library for ESP8266. To use this library you need only 1 resistor and one DSUB15 connector. VGA signal generation based on https://github.com/hchunhui/esp-vga (thanks for your awesome works). [....]

The library implement a 512x480px framebuffer with 1bpp, where each pixel is stored as a single bit. The framebuffer is stored inside RAM and require 30720 bytes.

https://github.com/smaffer/espvgax

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Esp8266 is the super cheap chip which can run Micropython. You can buy it on Amazon for as little as €8 or less, and as little as $5 or less on Bangood/AliExpress.

The ESP8266 (ESP-12E spec) has a 4MB Flash RAM and about 96KB of  RAM.

One nice thing is you can use an async mode easily  and it works great. So I took this very good complete tutorial on asyncio, and hacked a bit the micropython source code to offer to you a super-breeze async version First of all I taken the last version of Micropython (1.10) and started to push to its limit to offer at least 44Kb to the interpreter. 51Kb is the theoretical limit, but you must left some space for the interpreter to work correctly. To increase Micropython available memory, you must download Micropython source code and hack it. It is a bit complex, so a Linux machine is recommended, anyway I managed to to it on a Windows10 with linux subsystem (WSL) which is a bit slow but it is a nice environemnt to work with. On this forum [1]  I found some specific information, then I forked micropython code base (below you will find my proposed modifications, also a pre-made image is provided).

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UPDATED and BUGFIXED!

MicroPython Repl command line is very nice, because you can telnet to the chip and read-and-evaluate python code. It is a great way of learning embedded IoT. The bad thing you cannot copy file while it is running, so experimenting get bad.

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Qualche mese fa avevo sviluppato una applicazione IoT per misurare la temperatura e spedire i dati ad una coda mqtt. Poi c’era uns server che collezionava i dati. Totale: tre server, con tre punti di fallimento ma architettura molto “cool”

In effetti però la potenza dei moderni chip embedded è tale che è possibile implementare una soluzione completamente asincrona “alla Erlang”. Con meno di 8 euro, potete procuravi il chip esp8266 su Amazon

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After months of esp8266 experimentation, I “just” discovered this little chip has also a I2S Audio digital interface. To discover it you must install the Arduino IDE adapter and code directly in C++ (brr, ok not a breeze but not boring like Java :)

I2S is a digital protocol to send your digital  music to a DAC decoder. Esp8266 has a 16bit DAC.

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