Longing-Ingernot/FMTransceiver1This is an FM radio transmitter and receiver, all in one, built around an ESP32-S3, a KT0803L
FMTransceiver is an open-source printed circuit board by Longing-Ingernot, from the Longing-Ingernot/FMTransceiver repository on GitHub, published under the MIT licence. It is a 4-layer board of 100 × 69.4 mm with 71 parts on 91 nets, routed with 691 tracks and 295 vias.
It is built around the ESP32-S3-WROOM-1-N8, RDA5807M and TDA7297, with the AMS1117-3.3 and KT0803L among its other parts. Its parts include 19 capacitors, 17 resistors, 7 ICs, 6 switches and 5 connectors. It belongs with the ESP32 boards of this library.
This is an FM radio transmitter and receiver, all in one, built around an ESP32-S3, a KT0803L
transmitter chip, and an RDA5807M receiver chip. Plug an antenna into whichever port matches what
you want to do, plug a 3.5mm source into the line-in jack if you want to transmit to the FM band,
and you're set. It's battery-powered, so you can take it with you when you're on the go too :)
| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C3, C10, C11, C12, C14, C19 |
| 7 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2, H3, H4, H5, H6, H7 |
| 6 | SW_Push | Button_Switch_SMD:Panasonic_EVQPUL_EVQPUC | SW1, SW2, SW3, SW4, SW5, SW6 |
| 5 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R3, R4, R7, R11 |
| 2 | 0.22uF | Capacitor_SMD:CP_Elec_4x5.4 | C6, C7 |
| 2 | 100uF | Capacitor_SMD:CP_Elec_6.3x7.7 | C4, C5 |
| 2 | 15uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C8, C9 |
| 2 | 1k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R13, R14 |
| 2 | 1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C18 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C15, C16 |
| 2 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5, R6 |
| 2 | 5.1k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R17 |
| 2 | LED | LED_SMD:LED_1206_3216Metric_ReverseMount_Hole1.8x2.4mm | D1, D2 |
| 2 | LiPO | Connector_Wire:SolderWire-1sqmm_1x02_P7.8mm_D1.4mm_OD3.9mm | BT1, BT2 |
| 2 | Speaker | Connector_Wire:SolderWire-1sqmm_1x02_P7.8mm_D1.4mm_OD3.9mm | LS1, LS2 |
| 1 | 1.5uH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Alps_RK163_Dual_Horizontal | RV1 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C17 |
| 1 | 12.6k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R15 |
| 1 | 12k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R9 |
| 1 | 28.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R10 |
| 1 | 3.6k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R16 |
| 1 | 32.768KHz | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | Y1 |
| 1 | 32k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R12 |
| 1 | 470uF | Capacitor_SMD:CP_Elec_10x10 | C13 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | AudioJack3 | Connector_Audio:Jack_3.5mm_CUI_SJ-3523-SMT_Horizontal | J3 |
| 1 | AudioJack3_SwitchTR | Connector_Audio:Jack_3.5mm_CUI_SJ2-3593D-SMT_Horizontal | J2 |
| 1 | Conn_Coaxial | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J4 |
| 1 | ER_OLEDM0.91_1x-I2C | Connector_Wire:SolderWire-1sqmm_1x04_P5.4mm_D1.4mm_OD2.7mm | U6 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U1 |
| 1 | KT0803L | footprints:SOIC127P600X175-16N | IC1 |
| 1 | MP2672GD-XXXX-Z | footprints:QFN-18_2MMx3MM_MP2672_MNP | U5 |
| 1 | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R8 |
| 1 | RDA5807M | RDA:RDA5807M | U2 |
| 1 | RTH | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | TH1 |
| 1 | RX_ANT CONN | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J1 |
| 1 | TDA7297 | Package_TO_SOT_THT:TO-220-15_P2.54x5.08mm_StaggerOdd_Lead4.58mm_Vertical | U3 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4110 | P1 |
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ItzzInfinity/FM-Radio-Using-ESP-12E-and-RDA5807M
An FM radio receiver built using an ESP12E, interfaced with the RDA5807M module. Powered by a Li-Ion battery with a TP4056 charging module, amplified by a PAM8403, and output through a 10-watt speaker.
It measures 100 × 69.4 mm and has 4 copper layers, 1.6 mm thick.
71 parts, built around the ESP32-S3-WROOM-1-N8, RDA5807M, TDA7297 and AMS1117-3.3. 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 Longing-Ingernot/FMTransceiver repository on GitHub, at the commit this page was made from: the board is src/pcb/FMTransceiver.kicad_pcb and its schematic src/pcb/FMTransceiver.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).