THE FREDBOARD V1/V2

fred is the seal

The fredboard is a custom pi pico devboard:

• the v2 has a MPU-6500 and has a reboot button with a led to indicate the restart;
• the v1 (untested) allows to use all but one pins provided by the rp2040, and has a led to indicate when the devboard is powered

V2 (TO BE APPROVED)

(Fred is the sea lion)

SCHEMATICS

Here's the schematic for the pcb, you can see the whole project from /v2/PCB

THE PCB

This is the pcb, front and back (image art can be found on /img/devboard):

PINOUT

Here's a diagram for the pinout of the v2, for more information on each pins capabilities, look up the rp2040 datasheet

BOM and Gerber

The Bill Of Materials and the Gerber files can be found in the /v2/PCB/production folder, these are the required materials:

• 2 33pF 0402 capacitors
• 13 0.1uF 0402 capacitors
• 2 1uF 0402 capacitors
• 2 10uF 0603 capacitors
• 1 10 nF 0402 capacitor
• 1 0402 white led
• 1 USB_C_Receptacle_USB2.0_14P
• 2 pinheaders 1x20 (optional)
• 1 pinheader 1x3 (optional)
• 2 0402 27 ohm resistors
• 1 0402 150 ohm resistor
• 3 0402 1K resistors
• 2 0402 5.1K resistors
• 1 0402 10K resistor
• 2 SW_Push_SPST_NO_Alps_SKRK button
• 1 RP2040
• 1 MCP1700x-330xxTT
• 1 W25Q16JVUXIQ TR flash memory
• 1 Crystal_SMD_3225-4Pin_3.2x2.5mm
• 1 MPU-6500

V1 (UNTESTED)

SCHEMATICS

Here's the schematic for the pcb, you can see the whole project from /PCB

THE PCB

This is the pcb, front and back (image art can be found on /img/devboard):

BOM and Gerber

The Bill Of Materials and the Gerber files can be found in the /PCB/production folder, these are the required materials:

• 10 0.1uF 0402 capacitors
• 2 1uF 0402 capacitors
• 2 10uF 0603 capacitors
• 2 33pF 0402 capacitors
• 1 0402 white led
• 1 USB_C_Receptacle_USB2.0_14P
• 2 pinheaders 1x20 (optional)
• 1 pinheader 1x3 (optional)
• 2 0402 5.1K resistors
• 2 0402 27 ohm resistors
• 2 0402 1K resistors
• 1 0402 10K resistor
• 1 SW_Push_SPST_NO_Alps_SKRK button
• 1 RP2040
• 1 MCP1700x-330xxTT
• 1 W25Q16JVUXIQ TR flash memory
• 1 Crystal_SMD_3225-4Pin_3.2x2.5mm