Flexostat/OD-Board3PCB and firmware for the OD measurement board.
ODboard 3 5 is an open-source printed circuit board by Flexostat, from the Flexostat/OD-Board repository on GitHub. It is a 2-layer board of 74.9 × 45 mm with 18 parts on 30 nets, routed with 342 tracks and 20 vias.
It is built around the ATMEGA328P-AU, TSL235R-LF and CJ2302, with the RJ45 among its other parts. Its parts include 4 connectors, 2 capacitors, 2 resistors, 2 ICs and 2 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
This repository contains the optical density measurement PCB and firmware source and production files for the Flexostat and syphonstat.
These are the files that get zipped and sent to the PCB fabricator.
This is the firmware file to be loaded onto the OD board.
This is the BOM file used by Seeedstudio to assemble the PCB. If assembled by Seeedstudio, the light sensors still need to be added afterwards since seeed does not stock them.
This work is licensed under a Creative Commons Attribution 4.0 International License.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistors_SMD:R_0805 | R3, R6 |
| 2 | CJ2302 | TO_SOT_Packages_SMD:SOT-23 | Q3, Q4 |
| 2 | TSL235R-LF | footprints:TSL235R-LF-S | LF1, LF2 |
| 1 | 1uF | Capacitors_SMD:C_0805 | C1 |
| 1 | 47uF | Capacitors_Tantalum_SMD:CP_Tantalum_Case-C_EIA-6032-28_Reflow | C2 |
| 1 | ATMEGA328P-A | Housings_QFP:TQFP-32_7x7mm_Pitch0.8mm | U1 |
| 1 | AVR-ISP-6 | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm | ISP1 |
| 1 | CONN_01X03 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J4 |
| 1 | CONN_01X04 | Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm | J3 |
| 1 | CONN_02X03 | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm | J5 |
| 1 | POLOLU_A4988 | footprints:SWDIP8_.6W | U2 |
| 1 | RJ45 | footprints:54602-908LF | J1 |
The 15 most common of 18 parts.
It measures 74.9 × 45 mm and has 2 copper layers, 1.6 mm thick.
18 parts, built around the ATMEGA328P-AU, TSL235R-LF, CJ2302 and RJ45. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the Flexostat/OD-Board repository on GitHub, at the commit this page was made from: the board is source/PCB/ODboard_3_5.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Flexostat before reusing the design.
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