Vello FreeWave Captain Wireless TTL Receiver for Canon E-TTL or E-TTL II Cameras Soldering To interface with the sensor

To interface with the sensor you need to connect to its 6-pin

This is great if you want to try to build your own diagnostic reader

and other obstructions

This is a really slick case and once you’ve gotten your hands on a Raspberry Pi

The Micro-SD card slot can be used to store files for serving over a network

Vello FreeWave Captain Wireless TTL Receiver for Canon E-TTL or E-TTL II Cameras Soldering To interface with the sensor2. 4GHz Reduced Interference Frequency 4 Channels Range: up to 300' Flash Sync up to 1 8,000 Sec. LED Indicators Studio Flash Cable and Monoplug Adapter The FreeWave Captain Wireless TTL Receiver for Canon E TTL or E TTL II from Vello is part of a multi purpose 2. 4 GHz, 4 channel digital TTL radio system that gives wireless freedom from a PC cord plus the convenience of accurate exposures through wireless communication with your camera's E TTL or E