Texteditor

ajackson2681·codex·pcb/rev1.1/texteditor.kicad_pcb

About the Texteditor PCB

Texteditor is an open source RP2040/RP2350 PCB design by ajackson2681, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 99.7 × 48.3 mm, with 18 components from 15 distinct parts.

Its main chip is the pico_2x20, from the RP2040/RP2350 family. Other key parts include the L7805. By type, the board carries 9 connectors, 4 capacitors, 2 ICs, 1 transistor, 1 switch and 1 resistor.

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

From the project

The Codex is an attempt at an open-source, distraction-free writing device inspired somewhat by the AlphaSmart Neo (at least the display was). The Codex pairs a 40x4 character LCD with USB HID keyboard support, and SD card storage. For a more in-depth summary/breakdown, you can v

Codex is under active development. Current state:

Main components on the Texteditor

L7805

Texteditor bill of materials (BOM)

18 components, 15 distinct parts.

Qty	Part	Footprint	Refs
1	~	pico_2x20	U1
1	L7805	PinSocket_1x03_P2.54mm_Vertical	U2
1	BC547	TO-92_Inline	Q1
1	Conn_02x08_Odd_Even	pico_idc_connector	J1
1	SD_Module	SD_Module	J2
1	Power In (7v-20v)	TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J3
1	LED	PinSocket_1x02_P2.54mm_Vertical	J4
1	Contrast Breakout	PinSocket_1x02_P2.54mm_Vertical	J5
2	Conn_01x03	PinHeader_1x03_P2.54mm_Vertical	J7, J8
1	Contrast Pot	PinHeader_1x03_P2.54mm_Vertical	J9
1	Brightness Pot	PinHeader_1x03_P2.54mm_Vertical	J10
1	SW_SPDT	PinHeader_1x03_P2.54mm_Vertical	SW1
2	10uF	C_Radial_D4.0mm_H5.0mm_P1.50mm	C1, C4
2	100nF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C2, C3
1	1K	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R1

Texteditor design files

The KiCad project lives in the ajackson2681/codex repository on GitHub; these links point at the commit this page was built from.

Layoutpcb/rev1.1/texteditor.kicad_pcb
Schematicpcb/rev1.1/texteditor.kicad_sch

Texteditor: common questions

What microcontroller does the Texteditor use?

The Texteditor is built around the pico_2x20, from the RP2040/RP2350 family.

How big is the Texteditor PCB?

The Texteditor measures 99.7 × 48.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Texteditor?

18 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Texteditor design files?

From the ajackson2681/codex repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Texteditor design in my own project?

Yes, under the terms of its GPL-3.0 license, which ajackson2681 chose for the repository.

Can I test firmware for the Texteditor 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.