Figure 1.
Ciro Santilli with his soon-to-be mother-in-law during his wedding in 2017
.
With pre-soldered male pin headers.
>>> machine.unique_id()
b'\xe6ad\x08C8%$'
  • Elegoo Breadboard power supply module MB‐V2:
    • Input voltage: 6.5-9v (DC) via 5.5mm x 2.1mm plug
    • Output voltage: 3.3V/5v
    • Maximum output current: 700 mA
    TODO center positive or center negative?
    Does not come with AC adapter, getting this one: www.amazon.co.uk/dp/B08ZN476FW output: DC 9V 1A Power Supply Adapter, Plug 5.5mm x 2.1mm, Center Positive,B rand: Security-01, input: AC 100-240V 50/60 Hz, Cable length: 1.8m
    Parts list from the ZIP:
  • resistors:
    • 10x each:
    • 30x 220
  • 1n4007 General Purpose Rectifier
  • 22pf 104 Ceramic Capacitor
  • 4N35 optocoupler
  • 74HC595 8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
  • Active buzzer
  • Buttons
  • CDS-55 Photoresistor
  • Electrolytic Capacitor
  • Focusens MF52D 103f 3950 thermistor. Beta value 25/50 Celcius: 3950. R_25: I measured 9.61 k Ohms. The number 103 they document as:
    These descriptions are weird, but ChatGPT has the theory that the first two digits are actual values, and the last is multiplier, so which makes 10k.
    but I have no idea how that maps to 10 k Ohms.
  • PN2222 General Purpose Transistor
  • Passive buzzer
  • 3386p Bourns Precision Potentiometer - 1 103T: from 0 to 10k Ohms, measured with multimeter. According to the manual the "103" mean 10 k oms, which is consistent with our measurement. "P 103" is etched into the part.
  • LEDs:
    • White LED 10x
    • Kingbright RGB LEDs 10x red, green, yellow, blue:
      • maximum Continuous Forward Current: 30 mA for read and blue, 25 mA for green
      • 303025
      • under 20 mA
      20 mA appears to be the typical operation. So with the 2.0 V drop on 5 V power we want a resistor such that:
      for the max 50 mA we would instead have 60 Ohms
2022: saddle and seat post stolen near home. Burn in Hell, motherfuckers. Bought a seatpost marked SP342 MICROPOST ALLOY 3 30.4mm. Like this: web.archive.org/web/20220208115055/https://www.ebay.co.uk/itm/Lightweight-Alloy-Micropost-Bike-MTB-Seatpost-25-4mm-Seat-Pin-300m-Long-Silver-/402311713393 but 30.4mm. OK, bought the Park Tool PW-5 15mm pedal wrench tool. Wasn't expensive at all.
TODO understand other markings on receipt: "18 Flourish FS W Sil XS".
The exact specs pages is lost forever. Closest one we've got is the 2020: web.archive.org/web/20200927204537/https://www.liv-cycling.com/gb/flourish-2
Frame: size: XS. Marking near bottom bracket: F/N GY17Z1327 DK: WGI GY17Z1327 F ES:BI-2339.
Seatpost: TODO diameter. Measured in store 30.4mm after original stolen, although 2020 says 30.9. 30.4mm seemed to fit OK, and measuring with ruler gives 30.5/30.6, I don't think a 30.9 can possibly fit.
Saddle: Liv Contact Comfort Plus Saddle, color golden brown. Same as this but blown: www.liv-cycling.com/gb/contact-comfort-plus-saddle-liv Actual color:
https://raw.githubusercontent.com/cirosantilli/media/master/Liv_contact_comfort_plus_2018.jpg
The main four instruments are undoubtedly:but there is also amazing content on others which must not be missed, including:
Video 1.
25 musical instruments OF China by Learning Music Hub
. Source. Great video, covers all the most important ones briefly with examples of varying relevance.
Video 2.
A beginner’s guide to Chinese musical instruments by SCMP
. Source. 2024. Terrible editing, way to hard to see instrument name.
Video 3.
Chinese vs Western musical instrument battle scene from Our Shining Days
. Source. A bit cheap, but it has some value.
Total synthesis by Ciro Santilli 40 Updated 2025-07-16
TODO why can't we produce organic compounds more cheaply by total synthesis than biosynthesis?

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