Cryptocurrencies Signals service is a service that allows the investor to trade automatically with the necessary research and trading signals about cryptocurrencies. This service, which is preferred by professional investors, uses special algorithms to direct people to the right crypto money. Developed the backend of this project using Golang, iOS, and Android with Flutter. The purpose of this project is to send a notification to the user when a Crypto Currency will go up and suggest selling when it reaches a certain level. Used technologies : GO : Fiber, PostgreSQL(pgx), BadgerDB, Cockroachdb, Firebase, Ristretto, Resty, JWT, Sjson, One Signal, Revenuecat; Flutter : Bloc, Firebase(Auth, Analytic, Cloud Messaging, In-App Messaging, Crashlytics, Performance Monitoring), One Signal, Revenuecat, Dio, Hive, Language Support, Flurry.

Created the backend of this project using Go. This application allows a user to enter the Weekly, Monthly auto-opening Challenge Groups that exist for a fee. It takes the activities of the users on Strava, Garmin, Fitbit, and Google Health, in order to make calculations. Used technologies : Gin, PostgreSQL(pg), Firebase(Notification, Login(Gmail, Facebook), Analytic), Resty, Get Stream, BadgerDB, Sonic Server, Ristretto, JWT, Paypal Payment System, Gjson, Sjson, Msgpack, Segment, Oauth2, Oauth1, Fusion Auth, Intercom, Mailchimp.

Developed the backend of this project with Go. This project provides the ability to manage Android devices remotely. Device policies(permission, install/uninstall an application, security, log, etc.), and commands(reboot, wipe, set password, etc.). Used technologies : Fiber, PostgreSQL(pgx), Google Cloud, Google Android Management, Pub/Sub, Gjson, Sjson.

This book is for those who do not dare to deal with programming, electronics and microcontrollers, do not know where to start, and those who want to produce many solutions that will make your life easier with the information described in the book. You will take your first step into this world with ATMEL - ATmega32A integration, which is superior to many of its counterparts in the market. This book is a practice book. If you do it by applying the examples within your possibilities, you can produce and develop your own technological solutions.