@mmroos said in M5Stack Fire and M5 Piano?: So I ordered a M5stack Fire and a M5 Piano. Now I found out that the Piano's 15 pin connector cannot fit anywhere on my M5Stack. Is there a way to convert grove to those 15 pins or is there another solution? Preferably one where I do not have to sacrifice my 600ah battery. The Keyboard is designed for the I/O Base plate https://m5stack.com/collections/m5-base/products/battery-bottom-150mah?ref=pfpqkvphmgr Here is the know information on the keyboard.link text The pins can be found on the internal 2X15 pin internal bus connection.