Toern

Soundpauli·toern·PCB/toern_revH/toern_revH.kicad_pcb

Toern is an open source PCB design by Soundpauli: a 4-layer, 160 × 71 mm board with 118 components (55 distinct parts). It is built around the BQ24075TRGTR, SPX3819M5-L-3-3, SPX3819M5-L-1-8, SGTL5000XNBA3 and more. Filed under audio and power & battery.

TŒRN is a hands-on standalone open-source sampler and step sequencer built around the Teensy Microcontroller, a 16×16 RGB matrix, with eight sample lanes, three multi-OSC.synth voices, Micro SD storage, four rotary encoders and onboard recording.

Open-source sequencer and sampler — by warft_ctrl

TŒRN is a sequenced musical device for beginners, makers, and anyone who likes blinking lights more than plugin menus. Think Etch-A-Sketch™ energy, but instead of drawing a wobbly staircase you draw drums, synths, and happy accidents — on a vivid 16×16 RGB LED matrix that is both the screen and the keyboard.

It sits on a Teensy 4.1, runs from a Micro SD card full of your WAVs, and is happy on a desk, in a backpack, or on battery at the park where strangers will ask “what is that?”

Built around

BQ24075TRGTR SPX3819M5-L-3-3 SPX3819M5-L-1-8 SGTL5000XNBA3 TLP2361V4_E 74LVC2G14 TPS22918DBVR PAM8403D 74LVC1G17 74AHCT1G125

Parts list

118 components, 55 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	BQ24075TRGTR	QFN50P300X300X100-17N-D	IC1
2	SPX3819M5-L-3-3	SOT-23-5	U1, U7
1	SPX3819M5-L-1-8	SOT-23-5	U2
1	SGTL5000XNBA3	QFN-32-1EP_5x5mm_P0.5mm_EP3.6x3.6mm	U3
1	TLP2361V4_E	5pin SO6_TOS	U4
1	74LVC2G14	SOT-23-6	U5
1	TPS22918DBVR	SOT95P280X145-6N	U8
1	PAM8403D	SOIC-16_3.9x9.9mm_P1.27mm	U13
1	74LVC1G17	SOT-23-5	U14
2	74AHCT1G125	SOT-23-5	U15, U16
2	YZP0354-20100-01 Xinyangze	YZP0354-20100-01	CN1, CN2
4	AUDIOJACK3_SWITCH AudioJack3_Switch	Jack_6.35mm_Neutrik_NMJ6HCD2_Horizontal	J1, J5, J6, J7
8	CONN_01X05_SOCKET Conn_01x05_Socket	PinSocket_1x05_P2.54mm_Vertical	J2, J18, J19, J20, J21, J22, J23, J24
2	AUDIOJACK3_GROUND AudioJack3_Ground	CUI_SJ1-3533	J3, J17
1	USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J4
1	C597972 Micro_SD_Card	microSD_HC_Hirose_DM3BT-DSF-PEJS	J8
1	CONN_01X03 Conn_01x03	JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical	J9
5	CONN_01X02 Conn_01x02	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J10, J16, J25, J26, J27
5	CONN_01X05 Conn_01x05	JST_PH_B5B-PH-K_1x05_P2.00mm_Vertical	J11, J12, J13, J14, J15
1	Conn_01x05	JST_PH_B5B-PH-K_1x05_P2.00mm_Vertical	J11.5

Show 35 more

Qty	Part	Footprint	Refs
1	C529951 Microphone_Condenser	MIC-TH_BD6.0-P1.90-D0.4-L-FD	MK1
1	EG2219	EG2219	S1
1	BAT54J	D_SOD-323F	D1
1	C171786 D_Schottky_Dual_Series_ACK	SOT-23	D2
1	C71911 Red	LED_0402_1005Metric	D4
1	C74342 Yellow	LED_0402_1005Metric	D5
5	1u	C_0402_1005Metric	C1, C2, C9, C12, C23
10	10U 10u	C_0603_1608Metric	C3, C4, C16, C17, C18, C19, C20, C22 +2
3	100NF 100nF	C_0603_1608Metric	C5, C26, C29
1	1000UF 1000uF	CP_Elec_8x10.5	C6
6	100NF 100nF	C_0402_1005Metric	C7, C8, C25, C37, C38, C39
2	CC0603KRX7R6BB224 100n	C_0402_1005Metric	C10, C11
1	150N 150n	C_0402_1005Metric	C13
3	100N 100n	C_0402_1005Metric	C14, C15, C21
2	0.47UF 0.47uF	C_0603_1608Metric	C27, C28
2	1UF 1uF	C_0603_1608Metric	C30, C31
2	4.7UF 4.7uF	C_0603_1608Metric	C33, C35
1	10NF 10nF	C_0402_1005Metric	C34
1	C59461 22µF	C_0603_1608Metric	C36
5	22R	R_0402_1005Metric	R1, R2, R3, R4, R5
2	220R	R_0603_1608Metric	R6, R20
2	33R	R_0603_1608Metric	R7, R8
2	5.1K 5.1k	R_0402_1005Metric	R9, R10
4	10K 10k	R_0402_1005Metric	R12, R13, R16, R17
1	49.9K 49.9k	R_0402_1005Metric	R14
1	1M	R_0402_1005Metric	R15
1	200K 200k	R_0402_1005Metric	R18
1	1.5M	R_0402_1005Metric	R19
2	20K 20k	R_0805_2012Metric	R21, R22
1	1.1K 1.1k	R_0402_1005Metric	R23
1	1.13K 1.13k	R_0402_1005Metric	R24
2	1.5K 1.5k	R_0402_1005Metric	R25, R26
3	100K 100k	R_0402_1005Metric	R27, R29, R31
2	1k	R_0402_1005Metric	R28, R32
1	22K 22k	R_0402_1005Metric	R30

Toern

Built around

Parts list

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