Instructions | Prismo

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Solder prismo PCB instruction

Bom file
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Step 1.1

Solder pins for ESP32-C3 Super mini to Prismo PCB
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Step 1.2

Solder the ESP32 board

Add a socket for PN532
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2. Soldering audio - add buzzer

The board has a small buzzer for sound effects; this step is also optional. The sound enhances the user experience.
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Step 2.1

Solder the buzzer and its resistor. You can control the buzzer's volume by choosing the right resistor. We recommend a 100 Ω resistor. For reference, the 1000 Ω resistor makes the buzzer really quiet, so you can hear it only in completely silent environments.
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Solder light components

The light line connects to the 5V line and is controlled via 3 transistors.
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Step 3.1

Solder four RKGB LED diodes. Use diodes with a common cathode. Match the long (cathode) pin on the diode with the board GND. The other side of the board is labeled RKGB; the letters match the LED diode pinout.
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Step 3.2

Solder four 150 Ω resistors for the red line
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Step 3.3

Solder four 100 Ω resistors for the green and blue lines
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Step 3.4

Solder three 1000 Ω resistors to the light board output.

Prismo