Ricardo-Kermit
About the Ricardo-Kermit PCB
Ricardo-Kermit is an open source ESP32 PCB design by icl-rocketry, published on GitHub under the MIT license. It is a 4-layer board measuring 85 × 43 mm, with 194 components from 89 distinct parts.
Its main chip is the ESP32-S3, from the ESP32 family. Other key parts include the TPS61089RNRR, AP2205-W5-7, ADS131M04IRUKR, SN65HVD230 and LM66200DRLR. By type, the board carries 66 capacitors, 65 resistors, 22 jumpers, 12 ICs, 8 connectors and 5 inductors.
It belongs with the sensors designs in this gallery.
From the project
Data Acquisition (DAQ) board
Main components on the Ricardo-Kermit
Ricardo-Kermit bill of materials (BOM)
194 components, 89 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TPS61089RNRR | IC_TPS61089RNRR | IC1, IC4 |
| 2 | AP2205-W5-7 | SOT95P282X145-5N | IC2, IC3 |
| 1 | ADS131M04IRUKR | QFN40P300X300X80-21N-D | IC5 |
| 1 | ESP32-S3 | QFN40P700X700X90-57N | U1 |
| 1 | SN65HVD230 | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LM66200DRLR | SOTFL50P160X60-8N | U3 |
| 1 | MAX77827AEFD+T | CONV_MAX77827AEFD+T | U4 |
| 1 | SC4215 | SOIC127P599X175-9N | U5 |
| 2 | MAX31856 | TSSOP-14_4.4x5mm_P0.65mm | U6, U7 |
| 1 | DMP3099L PMOS | SOT-23 | Q1 |
| 1 | R940000171 | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | RBUS | Molex_Mini-Fit_Jr_5566-06A_2x03_P4.20mm_Vertical | J1 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_Palconn_UTC16-G | J2 |
| 4 | 1053131104 | Molex_Nano-Fit_105313-xx04_1x04_P2.50mm_Horizontal | J4, J5, J6, J7 |
| 1 | GPIO Breakout | PinSocket_2x05_P2.54mm_Vertical | J8 |
| 1 | ST1W008S4TR2000 | JAE_ST1W008S4TR2000 | J9 |
| 1 | BLUE_LED | R_0402_1005Metric | 3V3LED1 |
| 1 | RED_LED | R_0402_1005Metric | 12VLED1 |
| 2 | CONN_01X02_MALE Conn_01x02_Male | PinHeader_1x02_P2.54mm_Vertical | BOOTJUMPER1, ENJUMPER1 |
| 1 | TermJP | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
Show 69 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 9 | SOLDERJUMPER_2_OPEN SolderJumper_2_Open | SmallerSolderJP | JP2, JP7, JP8, JP9, JP15, JP16, JP18, JP19 +1 |
| 12 | SOLDERJUMPER_3_OPEN SolderJumper_3_Open | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | JP3, JP4, JP5, JP6, JP10, JP11, JP12, JP13 +4 |
| 2 | Thermocouple | Molex_Nano-Fit_105313-xx02_1x02_P2.50mm_Horizontal | TC1, TC2 |
| 1 | GREEN_LED | R_0402_1005Metric | TXLED1 |
| 1 | WHITE_LED | R_0402_1005Metric | USBLED1 |
| 1 | CANRXLED | LED_0402_1005Metric | CANRXLED1 |
| 1 | CANTXLED | LED_0402_1005Metric | CANTXLED1 |
| 1 | SM712_SOT23 | SOT-23 | D1 |
| 1 | SP0503BAHT | SOT-143 | D2 |
| 1 | MMBZ6V2ALT1G | SOT-23 | D3 |
| 1 | RCLAMP3346PQTNT | RCLAMP3346PQTNT | D6 |
| 1 | 2.0NH 2.0nH | L_0402_1005Metric | L1 |
| 1 | 20NH 20nH | L_0402_1005Metric | L2 |
| 1 | 1UH 1uH | L_0805_2012Metric | L3 |
| 2 | SRR6038-5R0Y | IND_SRP6540-390M | L4, L5 |
| 5 | 10UF 10uF | C_0402_1005Metric | C1, C16, C20, C24, C26 |
| 6 | 1UF 1uF | C_0402_1005Metric | C2, C4, C7, C22, C50, C51 |
| 14 | 0.1UF 0.1uF | C_0402_1005Metric | C3, C5, C6, C8, C10, C11, C27, C49 +6 |
| 5 | 10NF 10nF | C_0402_1005Metric | C9, C63, C64, C65, C66 |
| 1 | 2.2UF 2.2uF | C_0603_1608Metric | C12 |
| 2 | 11PF 11pF | C_0402_1005Metric | C13, C14 |
| 5 | 100NF 100nF | C_0402_1005Metric | C15, C31, C33, C44, C45 |
| 1 | 47NF 47nF | C_0402_1005Metric | C17 |
| 1 | 180PF 180pF | C_0402_1005Metric | C18 |
| 1 | 3.9NF 3.9nF | C_0402_1005Metric | C19 |
| 2 | 10UF 10uF | C_0603_1608Metric | C21, C38 |
| 1 | 22UF 22uF | C_0603_1608Metric | C23 |
| 1 | 4.7UF 4.7uF | C_0402_1005Metric | C25 |
| 2 | CL05X105KA5NQNC 1uF | C_0402_1005Metric | C28, C37 |
| 4 | 22UF 22uF | C_0805_2012Metric | C29, C30, C41, C43 |
| 2 | GRM155R61E225ME15D 2.2uF | C_0402_1005Metric | C32, C42 |
| 1 | 47UF 47uF | C_1206_3216Metric | C34 |
| 1 | CL05A106MP8NUB8 10uF | C_0402_1005Metric | C35 |
| 2 | C1005X5R1E104KT000E 100nF | C_0402_1005Metric | C36, C47 |
| 1 | 120PF 120pF | C_0402_1005Metric | C39 |
| 1 | 2.2NF 2.2nF | C_0402_1005Metric | C40 |
| 1 | TMK107BBJ106MA-T 10uF | C_0603_1608Metric | C46 |
| 1 | 22UF 22uF | C_1206_3216Metric | C48 |
| 1 | 220NF 220nF | C_0402_1005Metric | C52 |
| 4 | 0.01UF 0.01uF | C_0402_1005Metric | C53, C55, C58, C60 |
| 10 | 10K 10k | R_0402_1005Metric | R1, R3, R14, R17, R20, R29, R32, R38 +2 |
| 2 | 470 | R_0402_1005Metric | R2, R4 |
| 1 | 7.87K 7.87k | R_0402_1005Metric | R5 |
| 1 | AC0402FR-07499RL 499R | R_0402_1005Metric | R6 |
| 1 | 3k | R_0402_1005Metric | R7 |
| 1 | 0 | R_0603_1608Metric | R8 |
| 2 | 60 | R_0603_1608Metric | R9, R10 |
| 3 | 5.1K 5.1k | R_0402_1005Metric | R11, R12, R13 |
| 4 | 14K 14k | R_0402_1005Metric | R15, R36, R43, R49 |
| 1 | 56K 56k | R_0402_1005Metric | R16 |
| 1 | 360K 360k | R_0402_1005Metric | R18 |
| 2 | 100K 100k | R_0402_1005Metric | R19, R27 |
| 1 | 560K 560k | R_0402_1005Metric | R21 |
| 2 | 49.9K 49.9k | R_0402_1005Metric | R22, R28 |
| 1 | 150K 150k | R_0402_1005Metric | R23 |
| 1 | 301K 301k | R_0402_1005Metric | R24 |
| 1 | 18.7K 18.7k | R_0402_1005Metric | R25 |
| 1 | 976K 976k | R_0402_1005Metric | R26 |
| 1 | 475K 475k | R_0402_1005Metric | R30 |
| 1 | 287K 287k | R_0402_1005Metric | R31 |
| 11 | 1k | R_0402_1005Metric | R33, R40, R45, R48, R55, R56, R57, R58 +3 |
| 3 | 75K 75k | R_0402_1005Metric | R34, R42, R47 |
| 1 | RT0402BRD0775KL 75k | R_0402_1005Metric | R35 |
| 1 | ERA2ARB103X 10k | R_0402_1005Metric | R37 |
| 1 | 0402WGF1402TCE 14k | R_0402_1005Metric | R39 |
| 4 | RT0402BRD0749R9L 49.9 | R_0402_1005Metric | R41, R44, R59, R63 |
| 4 | 100 | R_0402_1005Metric | R50, R51, R52, R53 |
| 1 | 54.9R | R_0402_1005Metric | R54 |
| 1 | 432K 432k | R_0402_1005Metric | R65 |
Ricardo-Kermit design files
The KiCad project lives in the icl-rocketry/Ricardo-Kermit repository on GitHub; these links point at the commit this page was built from.
Ricardo-Kermit: common questions
What microcontroller does the Ricardo-Kermit use?
The Ricardo-Kermit is built around the ESP32-S3, from the ESP32 family.
How big is the Ricardo-Kermit PCB?
The Ricardo-Kermit measures 85 × 43 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Ricardo-Kermit?
194 components, from 89 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Ricardo-Kermit design files?
From the icl-rocketry/Ricardo-Kermit repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Ricardo-Kermit design in my own project?
Yes, under the terms of its MIT license, which icl-rocketry chose for the repository.
Can I test firmware for the Ricardo-Kermit 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.
Similar boards
ESP32Open Book Abridged Edition
joeycastillo
85 × 115 mm65 parts2LCC-BY-SA-4.08.1k
ESP32Badge
atopile
56.3 × 39 mm239 parts4LMIT4.0k
ESP32Esp32 minimal
36.2 × 26.8 mm20 parts2LMIT4.0k
ESP32Racer
StuckAtPrototype
36 × 50.2 mm70 parts4LApache-2.03.8k
ESP32Controller
29 × 74 mm58 parts4LApache-2.03.8k
ESP32Bitaxe
skot
56.5 × 99.8 mm86 parts4LCERN-OHL-S-2.01.4k