Billig

playlogo·billig·pcb/kontakt.kicad_pcb

About the Billig PCB

Billig is an open source RP2040/RP2350 PCB design by playlogo, published on GitHub under the TAPR-OHL-1.0 license. It is a 2-layer board measuring 86 × 74 mm, with 58 components from 34 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the NCP1117ST33T3G, W25Q128JVSIQ, ABM8-272-T3_C20625731, LM2596SX-5.0/NOPB and CYA1050-47UH. By type, the board carries 21 capacitors, 10 connectors, 8 ICs, 7 resistors, 6 transistors and 2 switches.

From the project

Designing & building a "big" 3D printer from scratch

- 24V power input - Build-in 5V 3A Stepdown (for RP2040 and external RPI) - RP2040 with 128MB Flash - 3 Port USB hub - 1x UART connection - 1x ARGB connection - 2x High current 24V PWM outputs (5A) - 4x Low current 24V PWM outputs (2A) - A 3D printable case with an included 30mm fan, can be mounted to a DIN rail with this adapter

Why ?: I originally only wanted to slap a rpi pico onto a pcb and add 6 mosfets to it, but like you can see I got sidetracked and added my own rp2040 (my first one!), a step-down converter (also a first) and a USB hub...

Billig, from the project README — From the project README

Main components on the Billig

RP2040 NCP1117ST33T3G W25Q128JVSIQ ABM8-272-T3_C20625731 LM2596SX-5.0/NOPBCYA1050-47UHSL2.1A GT-USB-7010ASV

Billig bill of materials (BOM)

58 components, 34 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RP2040	LQFN-56_L7.0-W7.0-P0.4-EP	U1
1	NCP1117ST33T3G	SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR	U2
1	W25Q128JVSIQ	SOIC-8_L5.3-W5.3-P1.27-LS8.0-BL	U3
1	ABM8-272-T3_C20625731	CRYSTAL-SMD_4P-L3.2-W2.5-BL	U4
1	LM2596SX-5.0/NOPB	TO-263-5_L10.2-W8.9-P1.70-TL	U5
1	CYA1050-47UH	IND-SMD_L11.6-W10.1	U6
1	SL2.1A	SOP-16_L10.0-W3.9-P1.27-LS6.0-BL	U7
1	GT-USB-7010ASV	USB-C-SMD_G-SWITCH_GT-USB-7010ASV	U8
2	IRLB8721PBF-VB	TO-220AB-3_L10.4-W4.6-P2.54-L	Q1, Q2
4	IRLML6344	SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR	Q3, Q4, Q5, Q6
1	C2915639 Vin	CONN-TH_2P-P5.08_DIBO_DB128V-5.08	CN1
1	C2915639 5V	CONN-TH_2P-P5.08_DIBO_DB128V-5.08	CN2
1	UART	JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical	J1
1	LED_1	JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J2
1	LED2	JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J3
1	FAN1	JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J4
1	ARGB	JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical	J5
1	FAN2	JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J6
1	FAN3	JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J7
1	FAN4	JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical	J8

Show 14 more

Qty	Part	Footprint	Refs
2	GT-TC029A-H020-L1N	SW-SMD_L3.9-W2.9-LS5.0	SW1, SW2
3	KH-AF90DIP-112	USB-A-TH_USB-A-F-90	USB1, USB2, USB3
1	1N5824_C7503125	DO-27_BD5.3-L8.4-P12.40-D1.3-RD	D1
9	100N 100n	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2, C4, C5, C6, C7, C9, C10, C14 +1
2	1u	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3, C11
3	10U 10u	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C12, C13, C18
2	15P 15p	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C15, C16
1	EEUEB1V331B	CAP-TH_BD10.0-P5.00-D1.0-FD	C19
1	EEUFR1V681	CAP-TH_BD10.0-P5.00-D1.0-FD	C20
3	10UF 10uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C21, C22, C23
2	27.4	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2
2	1k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3, R5
1	10K 10k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R4
2	5.1K 5.1k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R6, R7

Billig design files

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

Billig: common questions

What microcontroller does the Billig use?

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

How big is the Billig PCB?

The Billig measures 86 × 74 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Billig?

58 components, from 34 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Billig design files?

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

Can I use the Billig design in my own project?

Yes, under the terms of its TAPR-OHL-1.0 license, which playlogo chose for the repository.

Can I test firmware for the Billig 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.