WSPR-ease
About the WSPR-ease PCB
WSPR-ease is an open source ESP32 PCB design by alanmimms, published on GitHub under the MIT license. It is a 4-layer board measuring 99 × 64 mm, with 171 components from 56 distinct parts.
Its main chip is the ESP32-S3-WROOM-1-N8R8, from the ESP32 family. Other key parts include the SRV05-4.TCT, TPS22918DBVR, TPS74612PQWDRBRQ1, TESEO-LIV3R and AP2112K-3.3TRG1. By type, the board carries 86 capacitors, 34 resistors, 13 ICs, 13 inductors, 8 transistors and 8 diodes.
From the project
Easy WSPR transmitter using ESP32C3 and not much else.
Main components on the WSPR-ease
WSPR-ease bill of materials (BOM)
171 components, 56 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-WROOM-1-N8R8 | ESP32-S3-WROOM-1 | U101 |
| 1 | SRV05-4.TCT SRV05-4 | SOT-23-6 | U102 |
| 1 | TPS22918DBVR Texas Instruments | DBV6_TEX | U103 |
| 1 | TPS74612PQWDRBRQ1 Texas Instruments | SON65P300X300X100-9N-D | U104 |
| 1 | TESEO-LIV3R GNSS module | ublox_MAX | U105 |
| 1 | AP2112K-3.3TRG1 | SOT95P285X140-5N | U106 |
| 1 | LMR51430YDDCR | SOT-23-6 | U107 |
| 2 | UCC27525DGNR UCC27523DGN | SOP65P490X110-9N | U301, U302 |
| 1 | TPS62A02NDRL | SOT-563 | U303 |
| 1 | ICE40UP5K-SG48I ICE40UP5K-SG48ITR | QFN50P700X700X100-49N-D | U401 |
| 1 | TAA5242IRGER | TAA5242IRGER | U402 |
| 1 | SI5351C-B-GM1 SI5351A-B-GT | MSOP-10_3x3mm_P0.5mm | U403 |
| 8 | IRLML2060TRPBF IRLML2060 | SOT-23 | Q101, Q201, Q202, Q203, Q301, Q302, Q303, Q304 |
| 1 | ECS-TXO-2016-33-400-TR 40MHz ECS | ECSTXO201633400TR | Y401 |
| 2 | SMA-J-P-H-RA-TH1 SMA | SMA_Amphenol_901-143_Horizontal | J101, J103 |
| 1 | UJ20-C-H-G-SMT-P16-TR pwr+data Same Sky | UJ20-C-H-G-SMT-P16-TR | J102 |
| 1 | 35RASMT2BHWNTRX SJ1-3514-SMT-TR | 35RASMT2BHWNTRX | J401 |
| 1 | S8401-46 CR3032 holder | S8401-46 | BT101 |
| 3 | G6K-2G-DC5 G6K-2 | Relay_DPDT_Omron_G6K-2G | K201, K202, K203 |
| 1 | UHD111A-FKA-C3K23E1L3VG5ZB3Z3 LED_BGRA | UHD111AFKAC3K23E1L3VG5ZB3Z3 | D101 |
Show 36 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | SS14 | D_SMA | D201, D202, D203 |
| 4 | BAT54ZFILM BAT54FILM | D_SOD-123 | D301, D302, D303, D304 |
| 1 | ILHB0603ER601VHC41 600@1A | L_0603_1608Metric | FB101 |
| 1 | AIMC-0603-47NJ-T 47nH | L_0603_1608Metric | L101 |
| 1 | APH252010T2R2M 2.2uH APV | L_1008_2520Metric | L102 |
| 3 | 1008LS-272XJRC 2.7uH | L_1008_2520Metric | L201, L202, L203 |
| 2 | 1008CS-102XJRC 1uH | L_1008_2520Metric | L204, L206 |
| 1 | 1008CS-122XJRC 1.2uH | L_1008_2520Metric | L205 |
| 2 | 1008CS-271XGRC 270nH | L_0805_2012Metric | L207, L209 |
| 1 | 1008CS-331XGRC 330nH | L_0805_2012Metric | L208 |
| 1 | PFL4514-102MEC 1uH@2A | PFL4514-inductor | L301 |
| 11 | KAM05FR71H104KH 100nF X7R 50V | C_0402_1005Metric | C101, C104, C105, C116, C302, C303, C307, C308 +3 |
| 6 | CM105X5R106M25AT 10uF X5R 25V | C_0603_1608Metric | C102, C106, C111, C113, C117, C409 |
| 28 | 04023D105MAT2A 1uF X5R 25V | C_0402_1005Metric | C103, C114, C115, C118, C201, C206, C211, C301 +20 |
| 1 | HHXJ350ARA101MF80G 100uF 35V | C_Elec_6.3x7.7 | C107 |
| 3 | GRM155Z71A105KE1D 1uF Murata | C_0402_1005Metric | C108, C109, C432 |
| 1 | KGM15ACG2A102FT 1nF NP0 100V Murata | C_0603_1608Metric | C110 |
| 3 | 100pF NP0 50V | C_0402_1005Metric | C112, C304, C305 |
| 3 | 81-GXT155R71E223KE1D 10uF X5R 25V | C_0603_1608Metric | C119, C120, C406 |
| 2 | 910pF NP0 50V | C_0402_1005Metric | C202, C205 |
| 3 | 1.6nF NP0 25V | C_0402_1005Metric | C203, C204, C423 |
| 3 | 330pF NP0 50V | C_0402_1005Metric | C207, C210, C424 |
| 2 | 560pF NP0 50V | C_0402_1005Metric | C208, C209 |
| 2 | 82pF NP0 50V | C_0402_1005Metric | C212, C215 |
| 2 | 180pF NP0 50V | C_0402_1005Metric | C213, C214 |
| 9 | KGM15BR71H104KT 100nF X7R 50V | C_0402_1005Metric | C401, C402, C403, C405, C412, C414, C421, C425 +1 |
| 7 | CM05X5R475M10AH 4.7uF Vishay/Sprague | C_0402_1005Metric | C404, C407, C408, C413, C415, C422, C426 |
| 3 | AC0402FR-0747RL 100k | R_0402_1005Metric | R101, R102, R112 |
| 4 | MCS04020C5101FE000 5.1k | R_0402_1005Metric | R103, R104, R410, R411 |
| 4 | CRT0402-FZ-1003GLF 10k | R_0402_1005Metric | R105, R106, R408, R409 |
| 6 | RT0402FRD0722K1L 100 | R_0402_1005Metric | R107, R108, R109, R110, R111, R401 |
| 1 | RT0402FRD0722K1L 22.1k | R_0402_1005Metric | R113 |
| 6 | MCS04020C5101FE000 27 | R_0402_1005Metric | R301, R302, R303, R304, R406, R407 |
| 6 | 5.1k | R_0402_1005Metric | R305, R306, R307, R308, R309, R310 |
| 2 | MCT06030C1009FP500 5.1k | R_0402_1005Metric | R402, R404 |
| 2 | MCT06030C1009FP500 10k | R_0402_1005Metric | R403, R405 |
WSPR-ease design files
The KiCad project lives in the alanmimms/WSPR-ease repository on GitHub; these links point at the commit this page was built from.
- Layouthw/WSPR-ease.kicad_pcb
- Schematichw/WSPR-ease.kicad_sch
WSPR-ease: common questions
What microcontroller does the WSPR-ease use?
The WSPR-ease is built around the ESP32-S3-WROOM-1-N8R8, from the ESP32 family.
How big is the WSPR-ease PCB?
The WSPR-ease measures 99 × 64 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the WSPR-ease?
171 components, from 56 distinct parts. The full bill of materials is listed on this page.
Where can I download the WSPR-ease design files?
From the alanmimms/WSPR-ease repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the WSPR-ease design in my own project?
Yes, under the terms of its MIT license, which alanmimms chose for the repository.
Can I test firmware for the WSPR-ease without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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