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 ### [ItsyBitsy 32u4 5V](https://www.adafruit.com/product/3677) & [Adafruit Audio FX Mini Sound Board](https://www.adafruit.com/product/2342) & [Trellis](https://www.adafruit.com/product/1616)
 First incarnation of a soundboard inspired by Adafruit's [Portable Trellis Sound Board](https://learn.adafruit.com/portable-trellis-sound-board/overview). The originally suggested microcontroller in the project was the [Pro Trinket 5V](https://www.adafruit.com/product/2000), but since Adafruit itself advised against using that board, I replaced it with an [ItsyBitsy 32u4 5V](https://www.adafruit.com/product/3677).  
 The code for that version can be found [here](https://code.spamasaurus.com/djpbessems/Arduino.Sketches/src/branch/master/Itsybitsy-32u4-5V_Trellis_Audio-FX-Soundboard.ino).  
-Sadly, this version died soon after it came to fruition, most likely due to an open window in rainy weather.
+Sadly, this version died soon after it came to fruition, a post mortem dissection revealed some of the wires broke due to friction near the soldering points.
 
 ### [Feather M4 Express](https://www.adafruit.com/product/3857) & [Featherwing Music Maker w/ Amp](https://www.adafruit.com/product/3436) & [NeoTrellis](https://www.adafruit.com/product/3954)
 Second incarnation of the portable sound board.
 In my search for replacement parts, I got enamoured with the elegance that is Adafruit's [Feather M4 Express](https://www.adafruit.com/product/3857) along with the huge range of [FeatherWings](https://www.adafruit.com/category/871) that can be stacked on top.
-Since the original Trellis can only use single colour LED's (*Though I did mix different coloured leds in the first version of my sound board*), and Adafruit enticed me with 24-bit colour LED's, I was eager to upgrade to the [NeoTrellis](https://www.adafruit.com/product/3954). As an added benefit to these upgrades, the [LiIon/LiPoly Backpack](https://www.adafruit.com/product/2124) became superfluous...  
+Since the original Trellis can only use single colour LED's (*though I **did** mix different coloured leds*), and Adafruit enticed me with 24-bit colour LED's, I was eager to upgrade to the [NeoTrellis](https://www.adafruit.com/product/3954). As an added benefit to these upgrades, the [LiIon/LiPoly Backpack](https://www.adafruit.com/product/2124) became superfluous...  
 The code for this most recent version can be found [here](https://code.spamasaurus.com/djpbessems/Arduino.Sketches/src/branch/master/Feather-M4-Express_NeoTrellis_Music-Maker-FeatherWing-w-Amp.ino).
 
-## CircuitPython
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+## CircuitPython
+### [NeoTrellis M4 Express](https://www.adafruit.com/product/4020)
+This gadget requires no soldering and is less of an actual challenge to get working, but still offers lots of potential.  
+For now my son is enjoying it thoroughly as an [8-step beat sequencer](https://learn.adafruit.com/trellis-m4-beat-sequencer/eight-step-simple-sequencer) along with a Fresh ‘n Rebel [Rockbox Brick](https://www.freshnrebel.com/products/rockbox/rockbox-brick/).
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