SWITCH SCIENCE 100-pin B2B connector pitch conversion board for SPRESENSE

This board converts the 100-pin connector (B2B connector) on the back of Sony's SPRESENSE microcomputer board to a 2.54mm pitch. The B2B connector directly pulls out the SPRESENSE I/O signals, making it convenient for using functions not available on the expansion board. The 2.54mm pitch terminals do not have connectors mounted, so solder them as needed. Almost all SPRESENSE I/O signals can be used. The I/O signals from SPRESENSE are 1.8V. The 100-pin signals are arranged on both sides in a 2-row x 25-pin format. The B2B connector is already mounted. The wiring has been carefully considered to avoid interfering with the GPS antenna mounted on the SPRESENSE.
*In order to extract many signals compactly, 2 rows of 25 terminals are arranged in two locations. Please note that if you solder pin headers to all pins, it will no longer be possible to use it on a breadboard. *Many of the signals on the SPRESENSE operate at 1.8V. When connecting to an existing circuit, please connect via a level shifter.