

Block sch
Audio amplituner with display, bass, middle, treble control. It has:
- Size
- 300 × 120 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 377
- Nets
- 298
- Pads
- 1,125
- Tracks, vias
- 2,590, 1,574
- Pours
- 971
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Dec 2021
- Updated
- 26 Jan 2025
Overview
Block sch is an open-source printed circuit board by wonzaj, from the wonzaj/Amplituner repository on GitHub. It is a 2-layer board of 300 × 120 mm with 377 parts on 298 nets, routed with 2,590 tracks and 1,574 vias.
It is built around the TDA7719, RDA5807M and LM833D, with the LM3886T, CAT24C256LI and CS43L21-CNZ among its other parts. Its parts include 173 capacitors, 128 resistors, 21 ICs, 20 connectors and 14 diodes. It belongs with the ESP8266 and STM32 boards of this library.
Main components
9TDA7719
TSSOP-28-40℃~+85℃ 7.5V~10V I2C Processor TSSOP-28 Audio Interface ICs ROHSSTMicroelectronicsAudio Interface ICsRDA5807M
MSOP-10MSOP-10 RF Transceiver ICs ROHSRDA MicroelectronicsRF Transceiver ICsLM833D
SOIC-8-40℃~+85℃ 0.002% 115dB 2-Channel 4mA ESD protection SOIC-8 Audio Amplifiers ROHSonsemiAudio AmplifiersLM3886T
TO-220-11(Forming)-20℃~+85℃ 0.03% 1-Channel 120dB 20V~84V 50mA 68Wx1@4Ω 92.5dB Automatic mute/no-noise switch、ESD protection、Overvoltage protection Class AB TO-220-11(Forming) Audio Amplifiers ROHSTexas InstrumentsAudio AmplifiersCAT24C256LI
PDIP-81,000,000 cycles 1.8V~5.5V 100 Years 256Kbit 400kHz 5ms Hardware write protection function、Noise suppression function、Built-in power-on reset (POR) I2C PDIP-8 EEPROM ROHSonsemiEEPROMCS43L21-CNZ
QFN-32(5x5)-10℃~+70℃ 1.65V~2.63V 2 24 SPI、I2C QFN-32(5x5) ADCs/DACs - Special Purpose ROHSCirrus LogicADCs/DACs - Special PurposeUSBLC6-4SC6
SOT-23-6-55℃~+125℃ 0.3pF 15V 300W@8/20us 4.7A@8/20us 5V 6V 80nA ESD Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)BC817
SOT-231 NPN 100nA 150MHz 300mW 40 45V 500mA 5V 700mV NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)AMM-3742-T-R
--42dB 1.5V 200uA 300Ω 58dB Omnidirectional - MEMS Microphones ROHSPUI Audio, Inc.MEMS Microphones
README
README.mdAudio amplituner, prototype
Audio amplituner with display, bass, middle, treble control. It has:
- 3.2" OLED display with SSD1322 controler with 4bit gray scale. (check displays folder to see possible display states)
- possibility to wake up to your favourite radio station at specified time.
- two independent alarms which can work in five diffrent modes (everyday, one time, mon-fri, weekends, exact date)
- six encoders with buttons used to control audio (volume front, volume back, treble, middle, bass, loudness)
- four user buttons used to change settings, displays etc.
- five audio inputs - bluetooth 5.0, 2x jack, radio, microphone
- radio receiver with displaying RDS information
- possibility to save two favourite stations and then tune to them by pressing certain button
- displaying current day of the week, day of the month, year, hour, minunte, second and possibility to change them
- momentary button used as main power button with led controlled by PWM signal
- displaying FFT of selected output signal
- saving user settings in external EEPROM memory
- using ultra low power stm32l4q5
Soon to be done:
- wireless communication with ESP8266 to control parametrs via smartphone, browser
- playing audio files from USB disc using CS43L21 driver
Parts
377| Qty | Value | Footprint | References |
|---|---|---|---|
| 84 | R | Resistor_SMD:R_0805_2012Metric | R100, R101, R102, R103, R104, R105, R106, R111, R112, R113, R114, R115, R116, R117, R118, R119 +68 |
| 55 | C | Capacitor_SMD:C_0805_2012Metric | C106, C107, C108, C109, C110, C111, C112, C113, C114, C115, C116, C117, C118, C119, C120, C121 +39 |
| 22 | 100nF | Capacitor_SMD:C_1206_3216Metric | C59, C64, C65, C71, C74, C86, C105, C153, C154, C155, C156, C157, C158, C170, C171, C173 +6 |
| 16 | R | Resistor_SMD:R_1206_3216Metric | R31, R32, R33, R34, R35, R36, R37, R38, R39, R40, R76, R77, R107, R108, R109, R110 |
| 14 | 4,7uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C23, C24, C29, C30, C55, C56, C57, C58, C72, C75, C159, C162, C163, C172 |
| 9 | 100nF | Capacitor_SMD:C_0805_2012Metric | C70, C76, C77, C78, C79, C92, C98, C139, C140 |
| 8 | 1000uF | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C13, C14, C25, C26, C47, C48, C49, C50 |
| 8 | 20k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R8, R9, R10, R11, R22, R23, R24, R25 |
| 8 | 220uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C19, C20, C27, C28, C51, C52, C53, C54 |
| 8 | 4 700uF | Capacitor_THT:CP_Radial_D18.0mm_P7.50mm | C10, C12, C21, C22, C43, C44, C45, C46 |
| 7 | Conn_02x02_Counter_Clockwise | Connector_PinHeader_1.27mm:PinHeader_2x02_P1.27mm_Vertical | J6, J7, J8, J9, J10, J11, J12 |
| 6 | MountingHole | MountingHole:MountingHole_3mm_Pad_Via | H1, H2, H3, H4, H5, H6 |
| 5 | LM833D | amplituner_lib:LMV358 | U13, U14, U15, U20, U21 |
| 4 | 100uF | Capacitor_THT:C_Radial_D8.0mm_H11.5mm_P3.50mm | C15, C17, C39, C40 |
| 4 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R12, R14, R26, R27 |
| 4 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R6, R7, R20, R21 |
| 4 | 1k | Resistor_SMD:R_1206_3216Metric | R4, R5, R18, R19 |
| 4 | 20k | Resistor_SMD:R_1206_3216Metric | R2, R3, R16, R17 |
| 4 | 220nF | Capacitor_THT:C_Radial_D8.0mm_H11.5mm_P3.50mm | C16, C18, C41, C42 |
| 4 | 4,7R | Resistor_THT:R_Axial_DIN0614_L14.3mm_D5.7mm_P15.24mm_Horizontal | R13, R15, R28, R29 |
| 4 | 4,7uF | Capacitor_SMD:CP_Elec_6.3x5.2 | C61, C67, C68, C69 |
| 4 | 4.7uF | Capacitor_SMD:C_1206_3216Metric | C3, C4, C31, C32 |
| 4 | 470uF | Capacitor_SMD:C_1206_3216Metric | C7, C8, C35, C36 |
| 4 | 47pF | Capacitor_SMD:C_1206_3216Metric | C9, C11, C37, C38 |
| 4 | 47uF Tan | lib-amplituner:CAP_TANT_1206_SMD | C84, C85, C93, C94 |
| 4 | 680pF | Capacitor_SMD:C_1206_3216Metric | C5, C6, C33, C34 |
| 4 | AudioJack3 | Connector_Audio:Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J1, J2, J17, J20 |
| 4 | D_Zener | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D5, D6, D7, D8 |
| 4 | LED | LED_SMD:LED_1206_3216Metric | D13, D14, D15, D16 |
| 4 | LM3886 | Package_TO_SOT_THT:TO-220-11_P3.4x5.08mm_StaggerOdd_Lead4.85mm_Vertical | U1, U2, U3, U4 |
| 3 | 100pF | Capacitor_SMD:C_1206_3216Metric | C96, C97, C100 |
| 3 | 220nF | Capacitor_SMD:C_1206_3216Metric | C60, C62, C66 |
| 3 | Conn_01x03 | Connector_PinHeader_1.27mm:PinHeader_1x03_P1.27mm_Vertical | J16, J18, J19 |
| 3 | D_Bridge_+-AA | Diode_THT:Diode_Bridge_19.0x3.5x10.0mm_P5.0mm | D2, D3, D4 |
| 3 | G6K-2 | Relay_SMD:Relay_DPDT_Omron_G6K-2F-Y | K2, K3, K4 |
| 2 | 100MHz | Inductor_SMD:L_1206_3216Metric | L3, L4 |
| 2 | 10uF | Capacitor_SMD:C_1206_3216Metric | C101, C102 |
| 2 | 2200uF | Capacitor_THT:CP_Radial_D18.0mm_P7.50mm | C1, C2 |
| 2 | 2200uF | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C103, C104 |
| 2 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 2 | C | Capacitor_SMD:C_1206_3216Metric | C141, C142 |
| 2 | Conn_02x03_Counter_Clockwise | Connector_PinHeader_1.27mm:PinHeader_2x03_P1.27mm_Vertical | J13, J14 |
| 2 | Fuse | Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F2, F3 |
| 2 | L | Inductor_SMD:L_0805_2012Metric | L1, L2 |
| 2 | LM78M05_TO252 | Package_TO_SOT_SMD:TO-252-2 | U9, U19 |
| 1 | 100uF Ele | Capacitor_SMD:CP_Elec_4x3.9 | C83 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C73 |
| 1 | 10uF Ele | Capacitor_SMD:CP_Elec_4x3.9 | C95 |
| 1 | AMM-3742-T-R | amplituner_lib:MIC_AMM-3742-T-R | MK1 |
| 1 | AZ1117-3.3 | lib-amplituner:AZ1117-3.3 | U10 |
| 1 | CAT24C256 | amplituner_lib:CAT24C256 | U17 |
| 1 | CS43L21 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U16 |
| 1 | Conn_01x02 | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | J15 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | Conn_02x02_Counter_Clockwise | Connector_PinSocket_1.27mm:PinSocket_2x02_P1.27mm_Vertical | J5 |
| 1 | Crystal | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | ESP8266-12E_ESP-12E | RF_Module:ESP-12E | U7 |
| 1 | Fuse | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | LM7812_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U8 |
| 1 | NRST_BUTT | Button_Switch_SMD:SW_SPST_FSMSM | SW1 |
| 1 | RDA5807M | lib-amplituner:RDA5807M | U11 |
| 1 | STM32L4Q5 | Package_QFP:LQFP-64_10x10mm_P0.5mm | U6 |
| 1 | TDA7719 | lib-amplituner:TDA7719 | U5 |
| 1 | TVS 15V | Diode_SMD:D_1206_3216Metric | D12 |
| 1 | TVS 3,6V | Diode_SMD:D_1206_3216Metric | D10 |
| 1 | TVS 6V | Diode_SMD:D_1206_3216Metric | D11 |
| 1 | USBLC6-4SC6 | Package_TO_SOT_SMD:SOT-23-6 | U18 |
| 1 | USB_A | amplituner_lib:usb_A | J3 |
| 1 | bluetooth_module | amplituner_lib:bluetooth_module | U12 |
Questions
How big is the Block sch PCB?
It measures 300 × 120 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Block sch use?
377 parts, built around the TDA7719, RDA5807M, LM833D and LM3886T. 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.
Where can I download the Block sch KiCad files?
From the wonzaj/Amplituner repository on GitHub, at the commit this page was made from: the board is Hardware/kicad/block diagram/block-sch/block-sch.kicad_pcb and its schematic Hardware/kicad/block diagram/block-sch/ADC_scheet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Block sch design in my own project?
Its repository states no licence, so its author keeps all rights: ask wonzaj before reusing the design.
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