Block library

Every block explains itself — what it does, the schematic, and why each part is there.

29 blocks

555 Timer (astable)

vcc 4.5–15 Vf 1 kHziout_max 0.2 A

Boost Converter

vin 2.7–5.5 Vvout 12 Viout_max 0.8 A

Bridge Rectifier

vac_in 9–24 Vvdrop 1.4 Viout_max 1 A

vin 9–18 Vvout 5 Viout_max 3 A

Comparator (with hysteresis)

vcc 2.7–5.5 Vvth 0.5

Crystal + Load Caps

f 16 MHzcl 12.5 pF

Debounced Button

vcc 1.8–5.5 Vt_debounce 1 ms

Dielectric Soakage Demo

effect worst_in recovery 0.5–10 %

H-Bridge Motor Driver

vm 2.7–11 Viout_max 1.5 A

I2C Level Shifter

vlv 3.3 Vvhv 5 V

Input Protection (fuse + TVS)

vin 5–24 Viout_max 2 A

vin 4.5–12 Vvout 3.3 Viout_max 0.5 A

LED Color Sensor

channels 3method vsense 3–5.5 V

LED Current Sink

i_set 0.18 Avin 3–24 V

vf 2 Vi_led 10 mAr_series 330 Ohm

Li-ion Charger (1 cell)

vin 4.5–5.5 Vvbat 4.2 Vicharge 1 A

vdd 5 Vi_typ 1.8 A

MOSFET Switch (low-side)

vload_max 30 Vi_max 3 Avctrl 3–5.5 V

Op-Amp Amplifier (non-inverting)

vcc 2.7–30 Vgain 11

Optocoupler Input

vin 5–24 Vvcc 1.8–5.5 V

vin 9–18 Viout_max 2 A

RC Low-Pass Filter

r 1 kOhmc 100 nFfc 1592 Hz

vcoil 5–24 Vicoil_max 0.2 Avctrl 3–5.5 V

Reverse-Polarity Protection

vin 3–24 Viout_max 5 A

RF Field Detector

Temperature Sensing (NTC divider)

vcc 1.8–5.5 Vr25 10 kΩ

vin 5 Vvout 5 Viout_max 3 A

Voltage Divider

ratio 0.5zout 5 kΩ

Voltage Reference (TL431)

vin 4–15 Vvref 2.495 V