Cryobelt
About the Cryobelt PCB
Cryobelt is an open source ESP32 PCB design by michael201110, published on GitHub. It is a 4-layer board measuring 90 × 50 mm, with 92 components from 50 distinct parts.
Its main chip is the ESP32-S3-MINI-1-N8, from the ESP32 family. Other key parts include the SHT40-AD1B-R2, MAX98357AETE+T, FUSB303BTMX, TPS61089RNRR and D3V3XA4B10LP-7. By type, the board carries 33 capacitors, 28 resistors, 9 ICs, 5 switches, 5 diodes and 4 transistors.
Main components on the Cryobelt
Cryobelt bill of materials (BOM)
92 components, 50 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SHT40-AD1B-R2 SHT4x Sensirion | Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad | U1 |
| 1 | ESP32-S3-MINI-1-N8 ESP32-S3-MINI-1 Espressif Systems | ESP32-S3-MINI-1 | U2 |
| 1 | MAX98357AETE+T MAX98357A Analog Devices / Maxim | TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U3 |
| 1 | FUSB303BTMX onsemi | Texas_X2QFN-12_1.6x1.6mm_P0.4mm | U4 |
| 1 | TPS61089RNRR TPS61089 Texas Instruments | Texas_VQFN-RNR0011A-11 | U5 |
| 1 | D3V3XA4B10LP-7 D3V3XA4B10LP Diodes Incorporated | Diodes_UDFN-10_1x2.5mm_P0.5mm | U6 |
| 1 | BQ25895RTWR BQ25895RTW Texas Instruments | Texas_RTW_WQFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias | U7 |
| 1 | TPS63001DRCR TPS63001 Texas Instruments | Texas_DRC0010J_ThermalVias | U8 |
| 1 | INA180A3IDBVR INA180A3 Texas Instruments | SOT-23-5 | U9 |
| 2 | AO3401A Alpha & Omega Semiconductor | SOT-23 | Q1, Q3 |
| 1 | AO3400A Alpha & Omega Semiconductor | SOT-23 | Q2 |
| 1 | 2N7002 Jiangsu Changjing Electronics Technology Co. Ltd. | SOT-23 | Q4 |
| 1 | Speaker | SolderWire-0.1sqmm_1x02_P3.6mm_D0.4mm_OD1mm | J1 |
| 1 | USB4110-GF-A Charge Global Connector Technology | USB_C_Receptacle_GCT_USB4110 | J2 |
| 1 | S2B-PH-K-S(LF)(SN) Battery JST | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J3 |
| 1 | SM03B-GHS-TB(LF)(SN) Conn_01x03_Pin JST | JST_GH_SM03B-GHS-TB_1x03-1MP_P1.25mm_Horizontal | J4 |
| 1 | TS-1187A-B-A-B Reset XKB Connection | SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | TS-1187A-B-A-B Boot XKB Connection | SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | Down | PG1316S | SW3 |
| 1 | User | PG1316S | SW4 |
Show 30 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Up | PG1316S | SW5 |
| 1 | NCU18XH103F60RB Murata | R_0603_1608Metric | TH1 |
| 3 | WS2812B-2427-V6 Worldsemi | WS2812B-2427-V6_Rotated180 | D1, D2, D3 |
| 1 | KT-0603R STAT Hubei KENTO Elec | LED_0603_1608Metric | D4 |
| 1 | SS14 MDD (Microdiode Semiconductor) | D_SMA | D5 |
| 3 | FEXU0420S2R2MBS 2.2uH cjiang | L_Changjiang_FNR4030S | L1, L2, L3 |
| 5 | CL10A105KB8NNNC 1uF Samsung Electro-Mechanics | C_0603_1608Metric | C1, C3, C7, C20, C32 |
| 3 | CL05B104KO5NNNC 0.1uF Samsung Electro-Mechanics | C_0402_1005Metric | C2, C4, C5 |
| 10 | CL10A106KP8NNNC 10uF Samsung Electro-Mechanics | C_0603_1608Metric | C6, C8, C16, C21, C24, C25, C26, C27 +2 |
| 4 | CC0603KRX7R9BB104 0.1uF YAGEO | C_0603_1608Metric | C9, C12, C15, C22 |
| 5 | CL21A226MAQNNNE 22uF Samsung Electro-Mechanics | C_0805_2012Metric | C10, C11, C13, C17, C18 |
| 1 | CL10A226MQ8NRNC 22uF Samsung Electro-Mechanics | C_0603_1608Metric | C14 |
| 1 | 0603B472K500NT 4.7nF FH (Guangdong Fenghua Advanced Tech) | C_0603_1608Metric | C19 |
| 1 | CL10B473KB8NNNC 47nF Samsung Electro-Mechanics | C_0603_1608Metric | C23 |
| 2 | CC0603KRX7R9BB104 100nF YAGEO | C_0603_1608Metric | C30, C31 |
| 1 | CL10A106MA8NRNC 10uF Samsung Electro-Mechanics | C_0603_1608Metric | C33 |
| 4 | 0603WAF1002T5E 10k UNI-ROYAL | R_0603_1608Metric | R1, R2, R17, R24 |
| 3 | 0603WAF2201T5E 2.2k UNI-ROYAL | R_0603_1608Metric | R3, R4, R21 |
| 3 | 0603WAF1000T5E 100R UNI-ROYAL | R_0603_1608Metric | R5, R19, R20 |
| 2 | 0603WAF220JT5E 22R UNI-ROYAL | R_0603_1608Metric | R6, R7 |
| 1 | RC0603FR-07634KL 634k YAGEO | R_0603_1608Metric | R8 |
| 5 | 0603WAF1003T5E 100k UNI-ROYAL | R_0603_1608Metric | R9, R10, R12, R18, R28 |
| 2 | 0603WAF3003T5E 300k UNI-ROYAL | R_0603_1608Metric | R11, R13 |
| 1 | RC0603FR-0717K4L 17.4k YAGEO | R_0603_1608Metric | R14 |
| 1 | ERJ3EKF9533V 953k/1% PANASONIC | R_0603_1608Metric | R15 |
| 1 | RC0603FR-07107KL 107k/1% YAGEO | R_0603_1608Metric | R16 |
| 1 | 0603WAF3002T5E 30k UNI-ROYAL | R_0603_1608Metric | R22 |
| 1 | RC0603FR-075K23L 5.23k YAGEO | R_0603_1608Metric | R23 |
| 1 | FRM121WFR010TM 0.01R/1% FOJAN | R_1206_3216Metric | R25 |
| 2 | 0603WAF1001T5E 1k UNI-ROYAL | R_0603_1608Metric | R26, R27 |
Cryobelt design files
The KiCad project lives in the michael201110/cryobelt repository on GitHub; these links point at the commit this page was built from.
- Layoutcryobelt.kicad_pcb
- Schematiccryobelt.kicad_sch
- BOMproduction/bom.csv
Cryobelt: common questions
What microcontroller does the Cryobelt use?
The Cryobelt is built around the ESP32-S3-MINI-1-N8, from the ESP32 family.
How big is the Cryobelt PCB?
The Cryobelt measures 90 × 50 mm, has 4 copper layers and is 0.8012 mm thick.
How many components are on the Cryobelt?
92 components, from 50 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 Cryobelt design files?
From the michael201110/cryobelt 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 Cryobelt design in my own project?
The repository has no license, so all rights stay with michael201110. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Cryobelt 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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