Categories
Devices Embedded projects.

Board games Score Counter.

I would like to announce that a small device I have been working on is finally ready. The description of the device’s purpose and how to use it are available bellow. The Score Counter is available on my Online store. Introduction: The Score Counter is a device meant to be used for keeping the score […]

Categories
3D printing

3D printer Polycarbonate (Lexan) print surface 2

Just a quick follow up of my previous post on the topic of achieving better first layer adhesion of FDM 3D prints using Polycarbonate a.k.a. Lexan sheet as printing surface. Here I just want to show the result of printing a bunch of brackets and spacers I used in my TV cable management in ABS. […]

Categories
Mods.

TV cabinet cable management.

Next to the TV is where the IPTV receiver and the Raspberry Pi LibreElec KODI player stay. Combined with the HDMI switch and the Arduino IR to USB remote controller, which I have described in my previous post https://deyantodorov.com/ir-remote-controll-of-a-rpi-kodi-player-with-a-twist/ , this makes 4 boxes and a big mess of cables. Problem: Pretty ugly sight: Solution: […]

Categories
Arduino Embedded projects. Mods.

IR remote controll of a RPI KODI player with a twist.

Like many others I Am using a Raspberry PI 3B+ with LibreElec (KODI) as a media player for the TV. My setup used a RF remote with USB dongle to control the PRI and it worked great. What wasn’t so great was the fact that combined with the TV and the IPTV box there were […]

Categories
3D printing

3D printer Polycarbonate (Lexan) as print surface

I have a FDM 3D printer for more than a year now and have finally reached a point in the modification and improvements where I am happy with the performance of my machine. I plan to write a series of posts describing the modifications I have made to the cheap Anet A8 kit I got […]

Categories
Embedded projects.

OLED text only display driver (SSD1306 and SH1106).

I was working on a small device of my own design some time ago which needed a display of some sort. I decided to go for an OLED display. As part of my research I found the u8glib and the Adafruit_SSD1306 drivers. They are great if bigger micro-controllers are used, i.e. more RAM, or if […]

Categories
Embedded projects.

AVR micro controllers peripheral drivers collection.

I have been using the AVR family of micro-controllers and at some point decided to make my collection of Hardware Abstraction Layer (HAL) drivers, hal_lib_avr_cpp, available for others to use. Of course one can simply use the Arduino IDE and it’s libraries, but might as well, just like me, want to use something lighter that […]

Categories
Mods.

Electronic load with voltage, current meter.

I had bought a cheap, USB plug-able, electronic load which I have used to test some HiMh batteries. The load comes with a USB type A connector but is usable for voltages up to 15 volts. I had just soldered two wires to connect it the batteries and used a handheld multi-meter to control the […]

Categories
Mods.

DIY add touch screen to a 4.4″ LCD display.

I had installed a parking camera in my car, which used a display like this one mounted right above the rear view mirror. That is a great helper when parallel parking in tight spots and improves safety. Those displays have two inputs, so I had attached a android stick with a HDMI to Composite video […]

Categories
Embedded projects.

Update the USBASP firmware.

This is not a tutorial on how to do the update. Here I just want to point out that if you want to use an Arduino uno to do the update, you need to disable it’s auto reset, either by using a capacitor, or by cutting the “RESET EN” jumper. I had been using the […]