Cicuit Bar
About the Cicuit Bar PCB
Cicuit Bar is an open source AVR/Arduino PCB design by EthanSousaProjects, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 67.9 × 55.7 mm, with 18 components from 8 distinct parts.
Its main chip is the ARDUINO_NANO_ESP32, from the AVR/Arduino family. Other key parts include the R-78E3.3-0.5. By type, the board carries 8 diodes, 8 resistors, 1 IC and 1 module.
From the project
A custom cluster design for my CBR 125RW6 (2006 carb model) to replace the old large mechanical cluster with a smaller simpler design.
A custom cluster design for my CBR 125RW6 (2006 carburetor model) to replace the old large mechanical cluster with a smaller simpler design.
The references folder contains details on set things on the bike (eg. hole position dimensions, resistance of stock sensor) and thus design requirements, calculations and decisions can be found here.
There are three licenses for this project. All code falls under the AGPLV3 license, all hardware designs fall under the CERN-OHL-S license, all artwork and documentation in the READMEs related to this project are under the CC By-SA license.
Main components on the Cicuit Bar
Cicuit Bar bill of materials (BOM)
18 components, 8 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | R-78E3.3-0.5 74HC595 | DIP-16_W7.62mm_Socket | U1 |
| 1 | ARDUINO_NANO_ESP32 Arduino_Nano_v3.x | Arduino_Nano | A1 |
| 4 | LED | LED_D5.0mm | D1, D2, D3, D4 |
| 3 | LED_2.2V_20MA LED | LED_D5.0mm | D5, D7, D8 |
| 1 | 1N4007 LED | LED_D5.0mm | D6 |
| 4 | 200R 220R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 1 | 3.3KR 220R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5 |
| 3 | 1KR 220R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R6, R7, R8 |
Cicuit Bar design files
The KiCad project lives in the EthanSousaProjects/CBR_Custom_Cluster repository on GitHub; these links point at the commit this page was built from.
Cicuit Bar: common questions
What microcontroller does the Cicuit Bar use?
The Cicuit Bar is built around the ARDUINO_NANO_ESP32, from the AVR/Arduino family.
How big is the Cicuit Bar PCB?
The Cicuit Bar measures 67.9 × 55.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Cicuit Bar?
18 components, from 8 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 Cicuit Bar design files?
From the EthanSousaProjects/CBR_Custom_Cluster 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 Cicuit Bar design in my own project?
Yes, under the terms of its GPL-3.0 license, which EthanSousaProjects chose for the repository.
Can I test firmware for the Cicuit Bar without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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