
Multistepper
eddyem/stm32samples
Code samples and ready projects based on bare-metal STM32

PCB including DAC, audio amp, RaspberryPi interface and power supply
Audio pi is an open-source printed circuit board by barchstien, from the barchstien/network-amp repository on GitHub. It is a 2-layer board of 200 × 200 mm with 117 parts on 109 nets, routed with 710 tracks and 51 vias.
It is built around the LM2576-5.0WU, PCM5122PW and LM3886T, with the LP5907, IL 715 and IL 717 among its other parts. Its parts include 38 capacitors, 15 resistors, 9 diodes, 6 ICs and 6 transistors. It belongs with the audio and music boards of this library.
PCB including DAC, audio amp, RaspberryPi interface and power supply

network-amp by bastienauneau is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | VAL** | Mounting_Holes:MountingHole_3mm | MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm, MountingHole_3mm |
| 8 | 10k | Resistors_SMD:R_1206 | R8, R11, R12, R13, R14, R15, R16, R17 |
| 6 | 10uf | Discret:C1V7 | C4, C7, C12, C15, C23, C38 |
| 5 | 100nf | Capacitors_ThroughHole:Capacitor6MMDiscRM5 | C3, C8, C11, C16, C17 |
| 4 | 0.1uf | Capacitors_SMD:C_1206 | C22, C25, C30, C31 |
| 4 | 100uf | Capacitors_ThroughHole:Capacitor10x21RM5 | C27, C32, C37, C41 |
| 4 | 1k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | amp_left_Rin1, amp_right_Rin1, R1, R3 |
| 4 | 4700uF | Capacitors_ThroughHole:Capacitor26x45RM10 | C18, C19, C28, C29 |
| 4 | CONN_01X02 | Pin_Headers:Pin_Header_Straight_1x02 | FAV_1, LED2, ONOFF_1, PWM1_1 |
| 4 | Terminal_block_2 | Connect:AK300-2 | amp_left_spk1, amp_right_spk1, TB_chassis_earth1, TB_transfo_primary1 |
| 3 | IRF540N | Discret:TO220_VERT | Q1, Q2, Q7 |
| 3 | MMBF170 | SMD_Packages:SOT-23 | Q3, Q4, Q5 |
| 2 | 10k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R2, R4 |
| 2 | 10k | Discret:RV2X4 | amp_left_pot1, amp_right_pot1 |
| 2 | 1uf | Resistors_SMD:R_1206 | C39, C40 |
| 2 | 1uf | Capacitors_SMD:C_1206 | C34, C36 |
| 2 | 2.2nf | Capacitors_SMD:C_1206 | C20, C21 |
| 2 | 2.2uf | Capacitors_SMD:C_1206 | C24, C26 |
| 2 | 20k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | amp_left_Rfdbk1, amp_right_Rfdbk1 |
| 2 | 220pf | Capacitors_ThroughHole:Capacitor6MMDiscRM5 | C2, C10 |
| 2 | 22uf | Capacitors_ThroughHole:Capacitor8x13RM3.8 | C1, C9 |
| 2 | 400v 12a | Connect:bornier4 | D3, D4 |
| 2 | 400v 6a p6 | Diodes_ThroughHole:Diode_P600_Vertical_KathodeUp | D1, D2 |
| 2 | 400v 6a p6 | Diodes_ThroughHole:Diode_P600_Horizontal | D6, D7 |
| 2 | 470R | Resistors_SMD:R_1206 | R6, R7 |
| 2 | CONN_01X04 | Pin_Headers:Pin_Header_Straight_1x04 | I2C1_1, P1 |
| 2 | LM3886T | lib:TO220-11 | amp_left1, amp_right1 |
| 2 | LP5907 | SMD_Packages:SOT-23-5 | U5, U6 |
| 2 | TVS 1500w 400v do201 | Diodes_ThroughHole:Diode_DO-41_SOD81_Horizontal_RM10 | D5, D9 |
| 2 | VAL** | lib:heatsink_S157 | heatsink_S157, heatsink_S157 |
| 1 | 100k | Resistors_SMD:R_1206 | R9 |
| 1 | 100nf | Capacitors_SMD:C_1206 | C42 |
| 1 | 100uH 5A | lib:inductance | L1 |
| 1 | 10_5W | Resistors_ThroughHole:Resistor_Horizontal_RM25mm | R5 |
| 1 | 10nf | Capacitors_SMD:C_1206 | C33 |
| 1 | 1N5822 | Diodes_ThroughHole:Diode_DO-41_SOD81_Vertical_KathodeUp | D8 |
| 1 | 2200uf | Capacitors_ThroughHole:Capacitor16x25RM7.5 | C35 |
| 1 | 47k | Resistors_SMD:R_1206 | R10 |
| 1 | 5A | Fuse_Holders_and_Fuses:Fuseholder5x20_horiz_SemiClosed_Casing10x25mm | F1 |
| 1 | CONN_01X05 | Pin_Headers:Pin_Header_Straight_1x05 | P4 |
| 1 | IL715 | Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm | U3 |
| 1 | IL717 | Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm | U2 |
| 1 | LM2576-5.0 | Pentawatts:Pentawatt_Neutral_Staggered_Verical_TO220-5-T05D | U4 |
| 1 | LOGO | lib:Heron_img | G*** |
| 1 | PCM5122 | Housings_SSOP:TSSOP-28_4.4x9.7mm_Pitch0.65mm | U1 |
| 1 | RELAY_1RT | lib:Relay_Power | K1 |
| 1 | RELAY_2RT | lib:Relais_double | K2 |
| 1 | RPI_B+_J8_header | Pin_Headers:Pin_Header_Straight_2x20 | J8_1 |
| 1 | Terminal_block_3 | Connect:AK300-3 | TB_main_input1 |
| 1 | Terminal_block_4 | Connect:AK300-4 | TB_transfo_secondary1 |
| 1 | Volume_left | Pin_Headers:Pin_Header_Straight_1x03 | P2 |
| 1 | Volume_right | Pin_Headers:Pin_Header_Straight_1x03 | P3 |
It measures 200 × 200 mm and has 2 copper layers, 1.6 mm thick.
117 parts, built around the LM2576-5.0WU, PCM5122PW, LM3886T and LP5907. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the barchstien/network-amp repository on GitHub, at the commit this page was made from: the board is audio_pi.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask barchstien before reusing the design.

eddyem/stm32samples
Code samples and ready projects based on bare-metal STM32


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