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In electronics projects, frequently we need an overvoltage protection, for example we have 200V of solars charging a battery, we may want as last resort if MPPT fails, and everything else fails a non destructive protection before a crowbar. Other applications maybe in conjuction with a BMS to add extra security against overvoltage, other applications … Read more

Introduction Sodium Ion batteries are not a new kind of batteries, but they have been partially developed before year 2000 and then since lithium had higher performance and at the time cost was lower, their development stopped. Nowadays since lithium is available only in certain countries and its cost is increasing rapidly due to the … Read more

Sumitomo 35SE is one of the first automatic optic fiber splicers ( costed over 17K $ on launch ), supporting both multimodal and single mode fiber, and also edge cases like dissimilar diameter fibers or fibers with out of center core. In this article we will go through some of the common faults you may … Read more

Molti avranno visto o sentito parlare gli ultimi mesi di ChatGPT, ma non è solo sul fronte dell’interazione tramite Chat che si stanno avendo grandi progressi con l’intelligenza artificiale. In questo articolo saremo a spiegare in linea di massima il funzionamento per poi fornire un codice di esempio in Python. Funzionamento delle reti Stable diffusion … Read more

Did you know that you could play sound using an usb to uart/serial converter , by just using an FT232RL usbserial and an external speaker with amplifier? Let’s take a look at the software side first, the basic idea is to send bytes purposedly crafted to create some sort of PWM. So we have 8 … Read more

Since very few information is available on repairing UBNT Nanostation M5 Loco ( probably the same for M2 ), i am going to post here and keep updating that post with the main kinds of failure encountered with their eventual repair To do these repairs since the board contains big ground planes, you absolutely need to … Read more

Have you ever wondered how a bubble looks like while popping? if you think it just “disappears”, you are wrong, and provided you have a decent flash and a camera that allows you to use something like 10sec shutter speed, then you can take such photos with just a relay module and an Arduino. The … Read more

Earlier i’ve written a post on how to install OpenWrt on that router, now it’s time to start fixing broken stuff, especially the reset button and the usb port, along with default switch/network configuration. After some work i’ve managed to reverse engineer the GPIOs of that router, GPIO0 is used on the wps button on … Read more