ZEReader

Allegra42·ZEReader-KiCad

About the ZEReader PCB

ZEReader is an open source RP2040/RP2350 PCB design by Allegra42, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 110 × 110 mm, with 65 components from 30 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the USBLC6-2SC6 and BQ25170JDSGR. By type, the board carries 21 resistors, 14 capacitors, 8 diodes, 6 transistors, 6 connectors and 5 switches.

It belongs with the power & battery designs in this gallery.

From the project

ZEReader is an open source hardware and software E-Book Reader platform. Originally developed as a bachelor's thesis in electrical engineering, the project now evolves as a hobby initiative dedicated to further develop this hackable and customizable platform.

The ZEReader PCB is the custom open-hardware board designed for the ZEReader project — an open hardware eBook reader approach.

The project is supported by AISLER, which sponsors prototype boards. See Production for more information. Huge thanks to AISLER for their support!

- ZEReader KiCad - Table of Contents - PCB Revisions - Revision 2 - Known Issues Rev 2 - Revision 1 - Known Issues Rev 1 - CI and Automation - Production - Option 1: Tip of the Tree Production - Option 2: Using Pre-Generated Artifacts - Thanks - License

ZEReader, from the project README — From the project README

Main components on the ZEReader

USBLC6-2SC6 BQ25170JDSGR RaspberryPi_Pico

ZEReader bill of materials (BOM)

65 components, 30 distinct parts.

Qty	Part	Footprint	Refs
1	USBLC6-2SC6	SOT-23-6	U1
1	BQ25170JDSGR	WSON8_BQ2517_TEX	U2
1	RaspberryPi_Pico	RaspberryPi_Pico_SMD	A1
4	DMG2305UX-7	SOT-23-3	Q1, Q2, Q3, Q4
2	BSS138	SOT-23	Q5, Q6
1	UART	PinHeader_1x03_P2.54mm_Vertical	J1
1	Conn_02x05_Odd_Even	PinHeader_2x05_P1.27mm_Vertical_SMD	J2
1	USB4105-GF-A	GCT_USB4105-GF-A	J3
1	Conn_01x03_Socket	JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal	J5
1	FFC2B28-24-G	GCT_FFC2B28-24-G	J6
1	Micro_SD_Card_Det2	microSD_HC_Hirose_DM3AT-SF-PEJM5	J7
1	Polyfuse	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	F1
4	SW_Push	SW_PUSH_6mm	SW1, SW2, SW3, SW4
1	SW_Push	SW_Push_1P1T_NO_E-Switch_TL3301NxxxxxG	SW5
2	LED	LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder	D1, D2
5	MBR0530	D_SOD-123	D5, D6, D8, D9, D10
1	Zener 3V3	DIO_TDZVT_ROM	D7
1	10uH	IND_IFSC_1515AH_VIS-L	L1
4	10uF	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C1, C2, C3, C14
2	4.7uF	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C4, C5

Show 10 more

Qty	Part	Footprint	Refs
5	1uF, 25V	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C6, C7, C9, C10, C13
1	1uF, 50V	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C8
1	1uF, 10V	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C11
1	10uF, 10V	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C12
2	5.1k	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R1, R2
1	604, 1%	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R3
1	27k, 1%	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R4
15	10k	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R5, R6, R7, R9, R10, R12, R13, R14 +7
1	1k	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R8
1	0.47	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R11

ZEReader design files

The KiCad project lives in the Allegra42/ZEReader-KiCad repository on GitHub; these links point at the commit this page was built from.

LayoutZEReader-Pico.kicad_pcb
SchematicZEReader-Pico.kicad_sch

ZEReader: common questions

What microcontroller does the ZEReader use?

The ZEReader is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the ZEReader PCB?

The ZEReader measures 110 × 110 mm, has 2 copper layers and is 1.579 mm thick.

How many components are on the ZEReader?

65 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the ZEReader design files?

From the Allegra42/ZEReader-KiCad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ZEReader design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Allegra42 chose for the repository.

Can I test firmware for the ZEReader 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.