Dcdc V8
About the Dcdc V8 PCB
Dcdc V8 is an open source ESP32 PCB design by Gamu2124, published on GitHub. It is a 2-layer board measuring 80 × 42 mm, with 42 components from 31 distinct parts.
Its main chip is the CH340E, from the ESP32 family. Other key parts include the LM2576SX-5.0_NOPB, LDO_3V3 and ATTINY814-SS. By type, the board carries 10 capacitors, 9 resistors, 4 ICs, 4 diodes, 2 switches and 1 transistor.
It belongs with the robotics & motion, displays & leds and sensors designs in this gallery.
From the project
Complete data for the robot that won the Japan and World championships / 日本大会優勝 & 世界大会優勝したロボットの全データ
RoboCupJunior Soccer Lightweight 2026 シーズンにおいて、ジャパンオープン優勝、そして世界大会（韓国・仁川）で競技優勝・総合優勝・コミュニティ賞を達成したロボット「AIR」の設計・開発データを公開するリポジトリです。
This repository contains the design, hardware, and software data of AIR, the RoboCupJunior Soccer Lightweight 2026 Japan Open Champion and World Championship Champion.
本リポジトリは、次世代のRCJコミュニティおよび学生ロボティクスエンジニアへの情報共有を目的として公開されています。
2026シーズンの開発で使用した回路設計、組み込みソフトウェア、マルチマイコンによる分散処理システム、3D CADデータなど、AIRのロボット開発に関する設計データを公開しています。
Main components on the Dcdc V8
Dcdc V8 bill of materials (BOM)
42 components, 31 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM2576SX-5.0_NOPB | TO-263-5_TabPin6 | U1 |
| 1 | CH340E | MSOP-10_3x3mm_P0.5mm | U2 |
| 1 | LDO_3V3 LDO_3v3 | TO-252-2 | U3 |
| 1 | ATTINY814-SS ATtiny814-SS | SOIC-14_3.9x8.7mm_P1.27mm | U4 |
| 1 | PMOS | TO-252-2 | Q1 |
| 1 | TYPE-C_ESP32 | NELTRON_5077CR-16SMC2-BK-TR | J1 |
| 1 | Fuse | Fuseholder_Clip-5x20mm_Keystone_3517_Inline_P23.11x6.76mm_D1.70mm_Horizontal | F1 |
| 1 | XT30_IN | AMASS_XT30U-M_1x02_P5.0mm_Vertical | LiPo_1 |
| 4 | Conn_01x02_Socket | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | Line_1, UI_1, main_psu1, main_uart1 |
| 1 | Conn_01x03_Socket | JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | MDR_1 |
| 1 | Conn_01x02_Socket | PinSocket_1x02_P2.54mm_Vertical | OLED_1 |
| 1 | D | D_A-405_P10.16mm_Horizontal | SBD1 |
| 1 | SBD | D_A-405_P10.16mm_Horizontal | SBD2 |
| 1 | SW_SPST | PinSocket_1x02_P2.54mm_Vertical | SW1 |
| 1 | SW_Push | Switch_SKRPABE010 | SW2 |
| 2 | D | D_SOD-123F | D1, D2 |
| 1 | RED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | GREEN | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5 |
| 1 | 100U 100u | L_Sunlord_MWSA1204S-1R0 | L1 |
| 1 | 100U 100u | C_Radial_D6.3mm_H5.0mm_P2.50mm | C1 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1000U 1000u | C_Radial_D10.0mm_H12.5mm_P5.00mm | C2 |
| 4 | 0.1 | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C5, C8 |
| 1 | 10U 10u | C_0805_2012Metric | C9 |
| 2 | 0.1U 0.1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C11 |
| 1 | 47U 47u | CP_Radial_D5.0mm_P2.00mm | C12 |
| 3 | 10K 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R5 |
| 1 | 4.7K 4.7k | R_0603_1608Metric | R3 |
| 1 | 3.3K 3.3k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 2 | 5.1K 5.1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R9 |
| 1 | 110 | R_1206_3216Metric | R7 |
| 1 | 56 | R_1206_3216Metric | R8 |
Dcdc V8 design files
The KiCad project lives in the Gamu2124/RoboCupJunior2026-RobotDatas repository on GitHub; these links point at the commit this page was built from.
Dcdc V8: common questions
What microcontroller does the Dcdc V8 use?
The Dcdc V8 is built around the CH340E, from the ESP32 family.
How big is the Dcdc V8 PCB?
The Dcdc V8 measures 80 × 42 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dcdc V8?
42 components, from 31 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 Dcdc V8 design files?
From the Gamu2124/RoboCupJunior2026-RobotDatas 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 Dcdc V8 design in my own project?
The repository has no license, so all rights stay with Gamu2124. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Dcdc V8 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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