I reported on an experiment with a cheap sensor and an 8 bit ATmega32U4 Arduino board with built in USB MIDI capabilities. The 40 kpa sensor requires a bit of force, probably not sensitive enough for a side tap sensor. I found similar blow and draw ranges though sensitivity is not a perfect match. Here’s a detailed article on the sensor board.
I since obtained a 10 kpa sensor that I grafted onto the board (haven’t got around to smoke test the wiring)
10 kph sensor (requiring a bridge amp) $2.09 + $1.46
Example with integral I2C interface from same maker (not found in “retail” Chinese outlets, Alibaba has them)
Something new is a stacked sensor/bridge amp assembly, it may well use the same HX710B interface chip as the 40 kpa board, a couple sellers have a 5 kpa version that looks promising. (The bridged amplifier chip is on the bottom)
5 kph sensor in tiny piggyback bridge amp
1pcs XGZP6847 0~5KPa pressure sensor transmitter module 0.5-4.5V US $8.53 + $2.00 (the XGZP6847 comes in different sensitivity ranges)
The long pins are 1/10" apart
Another more compact processor option for USB or perhaps DIN MIDI, the SAMD21 based Seeed Studio XIAO or Adafruit QT PY said to be pin for pin compatible (About .8" long)
QT PI has added reset button and 2mb flash pads and a dedicated I2C connector (My go-to boards for compact projects)
