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This is the third prototype of Cosma. It is WIP. Nevertheless I thought I share my progress with you... 1. Shield design The MCU of the robot is an Arduino Mega. I designed a shield for the board, using Fritzing. The shield contains Micro SD card socket, voltage level shifter HEF4050 for the SD card, MPU 6050 (6 DOF accelerometer/gyroscope), I2C voltage level shifter for the MPU 6050 based on BSS138 N-channel MOSFETs, DS1307 based RTC with backup Lithium coin cell battery, connectors for DS18B20 ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/cosma-prototype-3