Converting Old TD-W8970B DSL Router to the LTE AP

Why to do that way I had an old and long-time unused DSL router TP-Link TD-W8970B v1 collecting dust on my shelf. And USB LTE dongle from Huawei, E3372H which I rarely used as a backup connection. … | Continue reading


@smallhacks.wordpress.com | 1 year ago

Using AM2331 Sensor with a FreeBSD/Raspberry Pi

Some time ago my DHT22 sensor died (humidity always was showing 99%), so I decided to replace it. I found a cheap AM2331 sensor that was in the same as my old DHT, so I ordered it. When it arrived … | Continue reading


@smallhacks.wordpress.com | 2 years ago

Adding web based remote control to the old Marantz amplifier (ESP32)

In one of my previous blog posts I explained how to emulate Marantz remote control with Arduino using "remote in" socket. Now I decided to do something useful about it. My final goal is: … | Continue reading


@smallhacks.wordpress.com | 2 years ago

Controlling Marantz amplifier using Arduino via “Remote” socket

Recently I decided to control my old Marantz PM-62 programmatically. There were a few reasons to do so: Original remote control died and "compatible replacements" were not good enough. I … | Continue reading


@smallhacks.wordpress.com | 2 years ago

AWS Client VPN Internals

About AWS Client VPN AWS Client VPN is a managed client-based VPN service provided by AWS. With Client VPN, it is possible to access AWS resources from any location using an OpenVPN-based VPN clien… | Continue reading


@smallhacks.wordpress.com | 3 years ago

ESP32 based old clock controller, with NTP sync

I have been able to find an old “slave” clock from 1960 (according to the serial number). It is Pragotron PJ 27, 12V version. They have been produced in Czechoslovakia during 196x years… | Continue reading


@smallhacks.wordpress.com | 3 years ago

Reading Codes from RSA Secure ID Token

Why do I need this? To access my VPN i need to use code from RSA Secure ID token. Sometime VPN disconnects and i need to enter token  again and again. It is annoying. Also i am afraid that once i w… | Continue reading


@smallhacks.wordpress.com | 5 years ago

How my Mac Book Pro 2017 destroyed 2 USB-C devices

Bad things happens At morning my new Macbook was not working well – when i been disconnecting charger it was not detecting this properly, so i decided to reset SMC, and this resolved the prob… | Continue reading


@smallhacks.wordpress.com | 5 years ago