Wemos proto board as I2C expansion

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I often do some quick test of different modules. Most of them are on I2C and usage on Wemos two I2C modules is not so straightforward. Why two? Since I usually connect also some LCD on I2C to display sensor readings. While using them from software side is not a problem, usually connecting them is bit more complicated. Wemos have only one GND pin. Connecting two devices with just jumper wires is not possible (there are not jumper wire splitters). Similar thing is with I2C bus and power source (if sensor uses 5V then it shares it with LCD).

Some time ago we have introduced I2C splitter PCB which can be used to do that.

To be honest it has 5 lines and labels for I2C, but PCB does not care what signal is carrying so You can use it to split any signals (SPI bus?)/power lines.

Now I realized other product can be used for that – Wemos proto board. It does have each IO pin doubled so You can make simple prototype to connect some I2C sensor and I2C LCD without any fus.

Just solder (provided with PCB) both female connectors (just remember to use stacking headers on outside).