Google has made a Wi-Fi router that aims to provide better Internet connections that make it easier for people to use its digital services and see more of its online advertising. Preorders for the $200 wireless router, called OnHub, could be made beginning on Tuesday at Google’s online store, as well as Amazon.com and Walmart.com. The cylindrical device will go on sale in stores in the United States and Canada in late August or early September. The search giant said its wireless router would be sleeker, more reliable, more secure and easier to use. And its software will be regularly updated, according to Google. The company said most people would be able to set up OnHub in three minutes or less. Google collaborated with the networking device maker TP-Link to build OnHub.