S Seong Yong Kim Joined May 21, 2016 Messages 3 Reaction score 2 Age 46 May 22, 2016 #1 hi~ all. I made a mistake while soldering for top-board of cgo3. finally top-board smoked and broken. And then all disassembled. I want to test whether the camera module and WiFi module is normal. Please tell me what is + or gnd line for connector. Do you work in a few volts ? Thanks.