diff --git a/books/free-programming-books-langs.md b/books/free-programming-books-langs.md
index ab0d911f9..2c0905952 100644
--- a/books/free-programming-books-langs.md
+++ b/books/free-programming-books-langs.md
@@ -303,6 +303,7 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Introduction to Arduino : A piece of cake!](http://www.introtoarduino.com) - Alan G. Smith
 * [Learn Arduino](https://riptutorial.com/Download/arduino.pdf) - Compiled from StackOverflow documentation (PDF)
 * [Open softwear - Fashionable prototyping and wearable computing using the Arduino](https://softwear.cc/book/files/Open_Softwear-beta090712.pdf) - Tony Olsson, David Gaetano, Jonas Odhner, Samson Wiklund (PDF) (CC BY-NC-ND)
+* [Science, Programming, Art and Radioelectronics Club (SPARC)](https://github.com/artyom-poptsov/SPARC) - Artyom V. Poptsov (PDF) (CC BY-SA)
 
 
 ### ASP.NET
diff --git a/books/free-programming-books-ru.md b/books/free-programming-books-ru.md
index 510eaf123..1dfcfa53b 100644
--- a/books/free-programming-books-ru.md
+++ b/books/free-programming-books-ru.md
@@ -8,6 +8,7 @@
     * [Управление конфигурациями](#управление-конфигурациями)
     * [Экосистема открытого исходного кода](#экосистема-открытого-исходного-кода)
     * [IDE and editors](#ide-and-editors)
+* [Arduino](#arduino)
 * [Assembly](#assembly)
 * [Bash](#bash)
 * [C](#c)
@@ -132,6 +133,11 @@
 * [Просто о Vim](http://rus-linux.net/MyLDP/BOOKS/Vim/prosto-o-vim.pdf) - Swaroop (PDF)
 
 
+### Arduino
+
+* [Автомато-программато-компарадио-кружок](https://github.com/artyom-poptsov/SPARC/blob/master/README.ru.org) - Artyom V. Poptsov (PDF) (CC BY-SA)
+
+
 ### Assembly
 
 * [Ассемблер в Linux для программистов C](https://ru.wikibooks.org/wiki/Ассемблер_в_Linux_для_программистов_C) - Викиучебник