RP2040 Pico + SN74AHCT125

[AstaRom]

Note

This page describes an example of assembling a driver for an LED strip with a level shifter 3.3 -> 5V

Software:

• HyperHDR
• HyperSPI

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Led driver:

• ⤴️ Raspberry Pi Pico (rp2040) Zero

Level shifter:

• ⤴️ SN74AHCT125N

Additional items:

• ⤴️ breadboard, 3x7
• ⤴️ round pin header 2.54mm (type "Female ")
• ⤴️ board socket straight (9 pin, type "Female")
• ⤴️ pin plug 2.54mm (type "Male")

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• the board 'rp2040' received power from the 'LED strip' power supply;
• the 'level shifter' received power from the 'LED strip' power supply;
• common ground line between 'SN74AHCT125N', 'LED strip', 'rp2040' board and 'Raspberry Pi'.

Rp2040	-	Raspberry Pi GPIO
GPIO 2	SCK	GPIO 11 / PIN 23
GPIO 4	MOSI	GPIO 10 / PIN 19
GPIO 5	CE0	GPIO 8 / PIN 24
GND	GND	GND / PIN 20

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#HyperHDR, #HyperSPI, #Level shifter, #Ambilight, #Ambilight DIY, #DIY Ambilight, #Ambilight
#Raspberry Pi Pico, #RP2040 Zero, #RP2040, #74AHCT125, #SN74AHCT125, #SN74AHCT125N

[AstaRom]

Tip

Alternative, slightly easier to assemble circuit

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• the board 'rp2040' received power from the 'LED strip' power supply;
• the 'level shifter' received power from the 'LED strip' power supply;
• common ground line between 'SN74AHCT125N', 'LED strip', 'rp2040' board and 'Raspberry Pi'.

Rp2040	-	Raspberry Pi GPIO
GND	GND	GND / PIN 20
GPIO 2	SCK	GPIO 11 / PIN 23
GPIO 4	MOSI	GPIO 10 / PIN 19
GPIO 5	CE0	GPIO 8 / PIN 24