ATGM336H GPS Module for Arduino Raspberry Pi etc. ATGM336H GPS Module for Arduino and other microcontrollers. Based on the 4. generation of Zhongkewei's high-performance, low-power SOC AT6558. Our ATGM336H-based satellite receiver module is compatible with the following positioning systems: The AT6558 is a multi-mode satellite navigation and positioning chip, including 32 tracking channels. ATGM336H combines high sensitivity, low power consumption, and low cost. It can be a user-friendly and cost-efficient replacement for Ublox MAX series.