Eveningstar hardware
About the Eveningstar hardware PCB
Eveningstar hardware is an open source ESP32 PCB design by ciaassured, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 81.2 × 71.6 mm, with 120 components from 55 distinct parts.
Its main chip is the ESP32-C6-WROOM-1-N8, from the ESP32 family. Other key parts include the 78L05G, ISO6721RBDR, 74HC14D, LMR38020SDDAR and GD5F2GM7UEYIGR. By type, the board carries 55 resistors, 38 capacitors, 9 diodes, 8 ICs, 2 crystals and 1 transistor.
It belongs with the power & battery designs in this gallery.
From the project
Hardware design for the EveningStar ESP32-based Morningstar MeterBus interface.
This directory contains the KiCad project for the EveningStar PCB.
The PCB should remain openable from this repository in the future, even if external KiCad libraries, plugin indexes, vendor APIs, or downloaded data sources disappear or change shape.
- Project-specific symbols, footprints, and 3D models should be committed under pcb/lib. - Third-party libraries that are used by the board should be vendored into this repository, not referenced through a local KiCad plugin path. - External tools are acceptable when they are sufficiently pinned and recoverable. KiCad itself is provided through…
Main components on the Eveningstar hardware
Eveningstar hardware bill of materials (BOM)
120 components, 55 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 78L05G UTC(Unisonic Tech) | SOT-89-3_L4.5-W2.5-P1.50-LS4.2-BR | U1 |
| 1 | ISO6721RBDR | SOP-8_L4.9-W3.9-P1.27-LS6.0-BL_ISO6721RBDR | U3 |
| 1 | 74HC14D | SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL | U5 |
| 1 | LMR38020SDDAR TI(德州仪器) | ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP-1 | U6 |
| 1 | ESP32-C6-WROOM-1-N8 ESPRESSIF(乐鑫) | WIRELM-SMD_ESP32-C6-WROOM-1 | U7 |
| 1 | GD5F2GM7UEYIGR GigaDevice(兆易创新) | WSON-8_L8.0-W6.0-P1.27-TL-1 | U8 |
| 1 | W5500 | LQFP-48_7x7mm_P0.5mm | U9 |
| 1 | APH0630T150M 15uH APV(爱普微) | IND-SMD_L7.1-W6.6 | U11 |
| 1 | 2N7002 Changjiang Electronics Tech (CJ) | Q_SOT-23 | Q1 |
| 1 | 32.768kHz Seiko Epson | FC-135R_L3.2-W1.5 | X1 |
| 1 | X322525MOB4SI 25MHz | OSC-SMD_4P-L3.2-W2.5-BL | Y1 |
| 1 | WJ15EDGRC-3.81-02P-14-00A WJ15EDGRC-3.81-2P KANGNEX(康奈克斯电气) | CONN-TH_2P-P3.81_WJ15EDGRC-3.81-2P_CLIPPED | P1 |
| 1 | 0451001.MRL 1A Littelfuse(美国力特) | FUSE-SMD_L6.1-W2.6 | F1 |
| 1 | GR01M1HXA001 E-NETTR(祥星电子) | RJ45-TH_GR01M1HXA001 | RJ1 |
| 1 | 5201-660111 5201-6P6C EVERCOM(恒连) | RJ45-TH_RRCH-5201-6P6C | RJ2 |
| 1 | Tactile Button, 160gf XUNPU | SW_TS-1088-AR02016 | S1 |
| 1 | GT-USB-7055BB G-Switch(品赞) | USB-C-TH_GT-USB-7055BB | USB1 |
| 1 | USBLC6-2P6 ST(意法半导体) | SOT-666-6_L1.6-W1.2-P0.50-LS1.6-BR | D1 |
| 1 | SMBJ40CA SMBJ40CA_C151262 Littelfuse(美国力特) | SMB_L4.6-W3.6-LS5.3-BI | D2 |
| 1 | SMBJ17CA Littelfuse(美国力特) | SMB_L4.3-W3.6-LS5.4-BI | D3 |
Show 35 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TX Foshan NationStar Optoelectronics | D_0805 | D4 |
| 2 | SS210 MDD（Microdiode Electronics） | D_SMA | D5, D15 |
| 1 | RX Hubei KENTO Elec | D_0805 | D6 |
| 1 | PSM712-LF-T7 ProTek Devices | SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR | D7 |
| 1 | White Hubei KENTO Elec | D_0805 | D12 |
| 1 | BLM18PG121SN1D BLM18PG121SN1D_C14709 muRata(村田) | L0603 | L2 |
| 1 | 10uF Samsung Electro-Mechanics | C_1206 | C1 |
| 16 | 100nF YAGEO | C_0603 | C2, C3, C5, C6, C7, C13, C16, C20 +8 |
| 4 | 10uF Samsung Electro-Mechanics | C_0603 | C4, C19, C33, C40 |
| 1 | 22uF Samsung Electro-Mechanics | C_0603 | C8 |
| 3 | 47uF Samsung Electro-Mechanics | C_1206 | C9, C10, C15 |
| 2 | 20pF Samsung Electro-Mechanics | C_0603 | C11, C12 |
| 1 | 100nF Samsung Electro-Mechanics | C_0805 | C14 |
| 2 | 18pF Samsung Electro-Mechanics | C_0603 | C17, C18 |
| 1 | 1nF FH(Guangdong Fenghua Advanced Tech) | C_1206 | C21 |
| 2 | 10nF FH(Guangdong Fenghua Advanced Tech) | C_0603 | C23, C29 |
| 1 | 4.7uF Samsung Electro-Mechanics | C_0603 | C25 |
| 2 | 6.8nF FH(Guangdong Fenghua Advanced Tech) | C_0603 | C31, C32 |
| 1 | 22nF Samsung Electro-Mechanics | C_0603 | C34 |
| 1 | ULV2C220MNL1GS 22uF 160V Nichicon(尼吉康) | CAP-SMD_BD10.0-L10.3-W10.3-FD | C36 |
| 1 | 1.8kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R1 |
| 2 | 100kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R2, R11 |
| 2 | 1MΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R3, R31 |
| 1 | 2.4kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R4 |
| 18 | 10kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R6, R9, R10, R13, R17, R20, R21, R24 +10 |
| 4 | 0Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R7, R12, R25, R32 |
| 13 | 33Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R8, R33, R34, R35, R36, R37, R50, R51 +5 |
| 1 | 100Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R14 |
| 2 | 62kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R15, R26 |
| 1 | 27kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R16 |
| 2 | 5.1kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R18, R19 |
| 1 | 220Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R22 |
| 4 | 49.9Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R38, R42, R43, R44 |
| 1 | 10Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R45 |
| 2 | 330Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R46, R47 |
Eveningstar hardware design files
The KiCad project lives in the ciaassured/eveningstar-hardware repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/EveningStar.kicad_pcb
- Schematicpcb/EveningStar.kicad_sch
Eveningstar hardware: common questions
What microcontroller does the Eveningstar hardware use?
The Eveningstar hardware is built around the ESP32-C6-WROOM-1-N8, from the ESP32 family.
How big is the Eveningstar hardware PCB?
The Eveningstar hardware measures 81.2 × 71.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Eveningstar hardware?
120 components, from 55 distinct parts. The full bill of materials is listed on this page.
Where can I download the Eveningstar hardware design files?
From the ciaassured/eveningstar-hardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Eveningstar hardware design in my own project?
Yes, under the terms of its AGPL-3.0 license, which ciaassured chose for the repository.
Can I test firmware for the Eveningstar hardware 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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