ESP32-S3 SI4732 pocket multiband receiver ATS Mini

Toni

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ESP32-S3 SI4732 pocket multiband receiver st7789

ESP32-S3 SI4732 ATS-Mini pocket multiband receiver ST7789 1.9″ IPS display using Lilygo T-Display S3, open-source sketch by Ralph Xavier. This sketch runs on Lilygo T-Display S3 device (and also T-Embed by changing Pins). It is a complete radio capable to tune LW, MW, SW on AM and SSB mode and also receiver the regular comercial stations.

Esp32-S3 Si4732 Pocket Multiband Receiver

Features: AM; SSB; LW/MW/SW; external mute circuit control; AGC; Attenuation gain control; SSB filter; CW; AM filter; 1, 5, 10, 50 and 500kHz step on AM and 10Khz step on SSB

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ESP32 OLED_ALL_IN_ONE sketch from PU2CLR ported to the Lilygo T-Display S3.

This is a porting of ESP32 OLED_ALL_IN_ONE sketch from PU2CLR (Ricardo Caratti) using the clean and beautiful Volos interface.

Using a Lilygo T-Display S3, which is an ESP32S3 board with a 1.9-inch display with a 8-Bit Parallel Interface, but I believe it will also run on Lilygo T-Embed with some minor changes.

Schematic ESP32-S3 SI4732 pocket multiband receiver ATS Mini

Esp32-S3 Si4732 Pocket Multiband Receiver Schematic
Schematic

 

Si4732 Mini Pocket Radio - Airband

The speaker is 1511 (15x11mm) speaker

1511 (15X11Mm) Speaker
1511 (15X11Mm) Speaker

 

Micro Pocket SSB Receiver - NEW FIRMWARE + Hi-Z CIRCUIT Mod.

The display is 1.91-inch IPS 170*320 dot matrix ST7789 driver 30-pin interface color screen SPI interface

1.9 -Inch Tft Display 170320 Point Line St7789 Driver 30Pin Plug Color Screen Spi Interface
1.9 -Inch Tft Display 170320 Point Line St7789 Driver 30Pin Plug Color Screen Spi Interface

The encoder is EC11 10mm rotary encoder with switch 5 pins

Ec11 10Mm Rotary Encoder With Switch 5 Pins
Ec11 10Mm Rotary Encoder With Switch 5 Pins

The battery is Lithium-ion 603040, 3,7V 800mAh

Battery Lithium-Ion 603040 3.7V 800Mah
Battery Lithium-Ion 603040 3.7V 800Mah

Mini Antenna

Double Band Antenna Sma-M/Sma-F Uhf + Vhf Srh805S Walkie Talkie For Baofeng
Double Band Antenna Sma-M/Sma-F Uhf + Vhf Srh805S Walkie Talkie For Baofeng

Mini ATS SI4732 receiver in AliExpres

Ats Mini Si4732 Radio Pocket Dsp Radio Receiver Fm Am Mw Sw Ssb Lsb Usb
Ats Mini Si4732 Radio Pocket Dsp Radio Receiver Fm Am Mw Sw Ssb Lsb Usb

Burning ESP32-S3

  • Download firmware
  • Download Esp32 Flash Download Tool
  • Select the firmware and bootloader
  • Connect the board to PC using USB cable
  • Check which port “COM” the board is using
  • Configure to ESP32-S3 As image:

    Esp32 Flash Download Tool
    Esp32 Flash Download Tool
  • Configure as image, include the COM port:
    • xxx.ino.bootloader.bin -> 0x000
    • xxx.ino.bin -> 0x10000
    • xxx.ino.partitions.bin -> 0x8000

      Esp32 Flash Download Tool Config
      Esp32 Flash Download Tool Config
  • Mark all itens and Start

 

For Developer

Firmware update and source-code download

G8PTN / ATS_MINI
https://github.com/G8PTN/ATS_MINI

Max Arnold (R9UCL)
Zhang Chong, Chinese update:
ATS Mini documentation

How update the firmware ATS Mini SI4732 DSP receiver

Full Install - Si4732 Mini Receiver Custom Firmware

Arduino IDE board configuration:

Board ESP32S3 Dev Module/T-Display-S3
Port COM x
USB CDC On Boot Enable
CPU Frequency 240MHZ(WiFi)
Core Debug Level None
USB DFU On Boot Disable
Erase All Flash Before Sketch Upload Disable
Events Run On Core1
Flash Mode QIO 80MHZ
Flash Size 16MB(128Mb)
Arduino Runs On Core1
USB Firmware MSC On Boot Disable
Partition Scheme 16M Flash(3M APP/9.9MB FATFS)
PSRAM OPI PSRAM
Upload Mode UART0/Hardware CDC
Upload Speed 921600
USB Mode CDC and JTAG

 

Si4735/Si4732: Volos Radio User Interface ported to ESP32 OLED_ALL_IN_ONE PU2CLR example sketch.

BOM ESP32-S3 SI4732 pocket multiband ATS-Mini receiver

Parts Value Description Quantity
Resistors
R1,R2 5.1kΩ (512) R0603 – SMD resistor 2
R3,R9,R11 1kΩ (102) R0603 – SMD resistor 3
R4,R6,R13,R14,R15,R19,R22,R24 10kΩ (104) R0603 – SMD resistor 8
R5 10Ω (100) R0603 – SMD resistor 1
R7 500mΩ (R50) R0603 – SMD resistor 1
R8,R10 100kΩ (104) R0603 – SMD resistor 2
R12 2.2kΩ (222) R0603 – SMD resistor 1
R20,R21 680Ω (681) R0603 – SMD resistor 2
R23 0Ω (0) R0603 – SMD resistor 1
R25,R26,R27,R28 4.7kΩ (472) R0603 – SMD resistor 4
Capacitors
C1,C2 22pF C0603 – SMD capacitor 2
C4,C6,C7,C8,C10,C13,C22,C24 10uF C0603 – SMD capacitor 8
C9,C11,C14,C15,C16,C19,C20,C21,C25,C26 100nF C0603 – SMD capacitor 10
C12 10nF C0603 – SMD capacitor 1
C17 470nF C0603 – SMD capacitor 1
C18 1uF C0603 – SMD capacitor 1
C28 18pF C0603 – SMD capacitor 1
Semiconductors
D1 SS34 40V 3A SMA(DO-214AC) Schottky Diode 1
LED1 NCD0603R1 LED0603 – SMD LED red 1
Q1,Q2,Q3 S8050 J3Y 25V 500mA NPN SOT-23 Bipolar transistor (BJT) 3
U2 SI4732-A10-GSR soic-16 Broadcast AM/FM/SW/LW/RDS Radio Receiver 1
U4 ESP32-S3-WROOM-1-N16R8 SMD,18×25.5mm WiFi Module 1
U5 TP4056 ESOP-8 1A Standalone Linear Li-Ion Battery Charger 1
U6 AO3401 30V 4.2A P-channel SOT-23 MOSFET 1
U9 NS4160 ESOP-8 – 5.0W AB/D audio power amplifier 1
U15,U16 ME6217C33M5G 800mA Fixed 3.3V PositiveSOT-23-5 Voltage Regulator
Linear, Low Drop Out (LDO)		 2
Miscellaneous
CN1 1.0T-2P-WT 1x2P 1mm Horizontal attachment SMD Connector 1
JP3 JUMPER-SPARKFUN Solder jumper 1
L1,L2 MLB1608-601(F) L0603 – 200mΩ 100Ω@100MHz Ferrite Bead 2
L3 BLM18BD252SN1D L0603 – 1.5Ω 2.5kΩ@100MHz 0603 Ferrite Bead 1
L5 180nH L0603 – SMD inductor 1
L6 4.7uH L0603 – SMD inductor 1
P1 PJ-342 3.5mm Headphone Jack SMD Connector 1
RF1 BWSMA-KE-P001 1 Inner Hole SMA Board-End Staggered pins 50Ω
5.2mm SMD Coaxial Connector (RF)		 1
SW1,SW2 TS3315A SPST SMD,3.3×3.3mm Tactile Switch 2
SW3 MSK12C02 Horizontal attachment (SPDT) SMD Slide Switch 1
U1 32.768K 32.768kHz SMD3215-2P Crystal 1
U3 ZJY190-1732TBWPG01 30P Contact, Top Horizontal attachment SMD,P=0.5mm
Right Angle FFC, FPC (Flat Flexible) Connector		 1
U7 BAT Battery connector 1
U12 EC1106S SMD Rotary Encoder 1
USB1 TYPE-C 16PIN 2MD(073) 5A USB 3.1 16P Female Type-C SMD USB Connector 1

Download files, links, and notes

Esp32-S3 Si4732 Pocket Multiband Receiver Pcb 3D Top
Pcb 3D Top
Esp32-S3 Si4732 Pocket Multiband Receiver Pcb 3D Bottom
Pcb 3D Bottom

Download Firmware + PCB in Gerber + BOM + Centroid file + PDF

Mirror

Source: https://oshwhub.com/sunnygold/esp32s3-si4732-shou-yin-ji

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About the author
Toni
Xtronic.org blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.
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30 thoughts on “ESP32-S3 SI4732 pocket multiband receiver ATS Mini”

  1. Hello, will there be a software update soon that will allow the display of a waterfall chart?
    Or is this no longer possible due to technical or software reasons?

    Regards
    Michael

    Reply

  2. With your firmware the device has acquired sufficient functionality.
    I want to try to change the interface, is it possible to see the program text that allows modification?

    Reply

  3. That would be absolutely great. Thanks.
    Looking at the datasheet (in chinese), I was able to decipher that the audio output is 3k. Bluetooth would fix this or I will add an amp for the o/p.

    Reply

  5. If I have time, I intend to add new functionalities to one of the firmware forks, such as an online radio receiver (I’ve built and developed one myself for a dual core esp32, and it would be relatively easy to add this feature in it), memory slots to store preferred frequencies, …
    That’s why I bought a second one to experiment with it.

    Reply

      • However it will require a new PCB design as my online radio streamer only works with a PCM5102 DAC with around 12 caps/resistors. The software I dev’d is quite mature now, with web config, online querying of a music streams database, display the current track name/band,… I think it would be fantastic to have all stuff in this super small but powerful (and cracking!) radio.
        Not sure how to do that on the existing board, but there’s definity enough space on the screen connector side, however I’m not a specialist in PCB design (but I did some in the context of my radio).
        Would be great to discuss that in another place!
        And what about including the small antenna matcher mod that OM0ET demonstrated on his YT channel ?
        My email: on4ssc at gmail dot com

  6. Please, could you update the purchase link on AliExpress mentioned above? The one you provided is outdated and gives an error. Alternatively, could you recommend a reliable seller to buy the radio from? Thank you.

    Reply

  8. My unit appears to be 2 kHz off in the ham bands, possibly due to faulty hardware. I believe this issue also occurred with the original firmware. Is there a workaround in the source code I can do to compensate for this?

    Thanks!

    Reply

  9. Thanks for sharing the project. A friendly guy from China sent me the receiver. It works great! I am curious if there will follow any updates, for example WiFi-access or FT8-decoding :-))
    73s, Wolfgang, DH2WS

    Reply

    • Thank you, Omer! I’m glad you appreciate the work put into the ESP32-S3 SI4732 pocket multiband receiver. If you have any questions or feedback, feel free to share.

      Reply

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