expansion base
7 pages across tutorials, modules, pinouts and guides.

ESP32-C3 OLED Board and Its Three Bases: Expansion, Pluggable Terminal and Screw Terminal
A 25 × 20.5 mm ESP32-C3 board with a 72 × 40 OLED already wired to GPIO 5 and 6, and three bases it seats on, each with a battery connector, charger and switch: 2.54 mm pins, push-in terminals or screw terminals.
ESP32-S3 Expansion Base pinout
Every hole on the Lonely Binary ESP32-S3 Expansion Base: two 20-way strips a side on the same nets, 28 of the 36 GPIOs at the edge, the eight that stay on the sockets, and the 15-way display connector.
ESP32-S3 Pluggable Terminal Base pinout
Every way on the Lonely Binary ESP32-S3 Pluggable Terminal Base: 24 GPIOs on two 12-way push-in blocks, two 4-way power blocks, the display connector, and the twelve pins that stay off the edge.
ESP32-S3 Screw Terminal Base pinout
Every way on the Lonely Binary ESP32-S3 Screw Terminal Base: two 15-way screw blocks, 26 GPIOs once each, 3V3 on the left and 5V on the right, and the ten GPIOs that do not come out.

ESP32-S3 Expansion Bases: 2.54 mm, PinPulse, Pluggable Terminal and Screw Terminal
Four bases for the 44-pin Lonely Binary ESP32-S3. Which GPIOs each one brings out, which way round the board goes, the fifteen-way display plug they all share on the same GPIOs, and the 36 LEDs on the PinPulse that cannot disturb I²C or SPI.
ESP32-S3 PinPulse Shield pinout
Every hole on the Lonely Binary ESP32-S3 PinPulse Shield: 44 nets on a male pin and a female socket each, the LED on all 36 GPIOs, and what that LED costs the pin.

ESP32 Expansion Bases: 2.54 mm, PinPulse, Pluggable Terminal and Screw Terminal
Four bases for the 38-pin Lonely Binary ESP32. Which pins each one brings out, which way round the board goes, the fifteen-way display port they all share, and the twenty-four LEDs on the PinPulse.