7Seg-Grove
About the 7Seg-Grove PCB
7Seg-Grove is an open source RISC-V PCB design by 74th, published on GitHub under the MIT license. It is a 2-layer board measuring 70 × 20.5 mm, with 30 components from 15 distinct parts.
Its main chip is the CH32V003F4P6, from the RISC-V family. Other key parts include the OSL10561-LW, CH213K and AMS1117. By type, the board carries 11 resistors, 7 ICs, 4 modules, 3 capacitors, 1 connector and 1 jumper.
From the project
74th のPCBデータを公開しているプロジェクト
This module allows you to control four 7-segment LEDs using I2C signals through a Grove connector.
Movie tweet: https://x.com/74th/status/1870251968486355227
- 1.0.1（未発売）: Groveソケットの位置を微調整。回路図上のピンの名前を修正。 - semantics PDF KiCanvas - PCB KiCanvas - 1.0.0 - semantics PDF KiCanvas - PCB KiCanvas
- 利用したいGroveポートの電源電圧にあわせて、実装してください - VCCに3.3Vを流す場合: U7を未実装にし、JP1を短絡してください - VCCに5Vを流す場合（M5Stackなど）: U7を実装にし、JP1を未接続にしてください - CH2 Groveソケットは、U1-4 7セグLEDより先に実装してください。7セグLEDは高さがあるため、はんだ付けが若干難しくなります。
Main components on the 7Seg-Grove
7Seg-Grove bill of materials (BOM)
30 components, 15 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | OSL10561-LW | Display7Seg_OSL10561-LW | U1, U2, U3, U4 |
| 1 | CH32V003F4P6 | Package_TSSOP-20_4.4x6.5mm_P0.65mm | U5 |
| 1 | CH213K | Package_SOT-23 | U6 |
| 1 | AMS1117 | Package_SOT-89-3 | U7 |
| 4 | Hole_M2_2.2-TH | Hole_M2_2.2-TH | M1, M2, M3, M4 |
| 1 | I2C | Connector_Grove_or_Qwiic | CH2 |
| 1 | SWD | PinOut_Pin_3_3GND | CH1 |
| 1 | I2C | Pad_4 | CH3 |
| 1 | INPUT 3V3 | SolderJumper-2 | JP1 |
| 1 | LED | LED_0805_2012 | D1 |
| 1 | 100n | Capacitor_0603_1608 | C1 |
| 2 | 10u | Capacitor_0603_1608 | C2, C3 |
| 8 | 100 | Register_0603_1608 | R1, R2, R3, R4, R5, R6, R7, R8 |
| 1 | 10k | Register_0603_1608 | R9 |
| 2 | 1k | Register_0603_1608 | R10, R11 |
7Seg-Grove design files
The KiCad project lives in the 74th/74th-oshw-projects repository on GitHub; these links point at the commit this page was built from.
7Seg-Grove: common questions
What microcontroller does the 7Seg-Grove use?
The 7Seg-Grove is built around the CH32V003F4P6, from the RISC-V family.
How big is the 7Seg-Grove PCB?
The 7Seg-Grove measures 70 × 20.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 7Seg-Grove?
30 components, from 15 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 7Seg-Grove design files?
From the 74th/74th-oshw-projects 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 7Seg-Grove design in my own project?
Yes, under the terms of its MIT license, which 74th chose for the repository.
Can I test firmware for the 7Seg-Grove without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RISC-V firmware against it before you order a PCB.
More boards in 74th-oshw-projects
RISC-VWire connect checker
53.5 × 69.5 mm72 parts2LMIT1
Lopo DCDC Testing
34.3 × 39.4 mm37 parts2LMIT1
Grove Universal Board
33 × 22.9 mm31 parts2LMIT1
ESP32WiFi KeyMouse
20 × 42.4 mm26 parts2LMIT1
RISC-VButton unit grove i2c
92.5 × 22 mm21 parts2LMIT1
74TH-G070-USB Power Adapter
36 × 23 mm20 parts2LMIT1
RISC-VCh32v003 test board
50 × 54 mm20 parts2LMIT1
RISC-V74TH-G068-1Key CH32V003
19 × 37.1 mm17 parts2LMIT1
Grove Expander
13.5 × 65 mm17 parts2LMIT1
RISC-VPower Switch Adapter
20.3 × 33.3 mm11 parts2LMIT1
Nordic nRFTEST-XIAO-nRF5240
25.4 × 31.8 mm6 parts2LMIT1
Similar boards
RISC-VWorkbench-1 Controller
Quchaosheng
160 × 130 mm106 parts8LApache-2.0129
RISC-VKeytartouch
cnlohr
152.5 × 117.5 mm69 parts2LMIT105
RISC-VCh32v003f4u6 with wsled
40.6 × 44.5 mm26 parts2LMIT105
RISC-VFroggyswadge
81.5 × 72.2 mm92 parts2LMIT105
RISC-VNorthPoleCircuit
Janky-Jingle-Crew
150 × 110 mm46 parts4LNo license62
RISC-VOsc sg90-v006
OpenServoCore
20.6 × 9.6 mm26 parts4LApache-2.034