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Transflective

cscott·rain-barrel·Transflective/Rear-Panel/Transflective.kicad_pcb

Transflective PCB layout, top view — open source RP2040/RP2350 board by cscott

About the Transflective PCB

Transflective is an open source RP2040/RP2350 PCB design by cscott, published on GitHub. It is a 2-layer board measuring 155 × 88 mm, with 25 components from 20 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the 74LVC1G02. By type, the board carries 19 connectors, 3 resistors, 2 ICs and 1 diode.

It belongs with the dev boards & breakouts and displays & leds designs in this gallery.

From the project

To do: 1) add STEMMA QT socket(s) 2) add power regulator (5V to 3.3V) 3) add I2C resistors? -- on base plate: (pads to regulate input to 12v (adj) / 5v / 3.3V) nah 2 STEMMA QT / 4 pin header(s) (2) 3 pin (+5V / SIG / GND) header to supply (5V-diode drop) outside, and to supply 5V

To do: 1) add STEMMA QT socket(s) 2) add power regulator (5V to 3.3V) 3) add I2C resistors? -- on base plate: (pads to regulate input to 12v (adj) / 5v / 3.3V) nah 2 STEMMA QT / 4 pin header(s) (2) 3 pin (+5V / SIG / GND) header to supply (5V-diode drop) outside, and to supply 5V power connect to 5V backfeed on unused HUZZAH pin used in basement motor shield Feather! IDC connector to display WATERGPIO (another 5v/sig/gnd header?) breadboard mounting motor shield rasp pi nano footprint -> (5V/SIG/GND) connector for snitch & routed i2c connection ---- To do: assign pin for DSCS Figure out how…

Main components on the Transflective

Pico74LVC1G02

Transflective bill of materials (BOM)

25 components, 20 distinct parts.

QtyPartRefs
1
Pico
U1
1
74LVC1G02
U2
2
feather long
J1, J3
2
feather short
J2, J4
1
PermaProto
J5
1
To LCD Board
J6
1
SNITCH
J7
2
STEMMA QT
J8, J9
1
STEMMA QT
J10
1
LCD CS
J11
1
WATER
J12
1
PUMP
J13
1
MISO
J14
1
CAP ALERT
J15
1
PRESSURE
J16
1
Pressure Switch
J17
1
PowerTail Out
J18
1
UNUSED
J19
1
D_Schottky
D1
3
10k
R1, R2, R3

Transflective design files

The KiCad project lives in the cscott/rain-barrel repository on GitHub; these links point at the commit this page was built from.

Transflective: common questions

What microcontroller does the Transflective use?

The Transflective is built around the Pico, from the RP2040/RP2350 family.

How big is the Transflective PCB?

The Transflective measures 155 × 88 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Transflective?

25 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Transflective design files?

From the cscott/rain-barrel repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Transflective design in my own project?

The repository has no license, so all rights stay with cscott. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Transflective without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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