CAD files and firmware of the LPA, and imager-based calibration script.
Lpa is an open-source printed circuit board by taborlab, from the taborlab/LPA-hardware repository on GitHub. It is a 2-layer board of 143 × 74 mm with 81 parts on 92 nets, routed with 1,224 tracks and 131 vias.
It is built around the ATMEGA328-AU, TLC5941RHB and AP1509-SG. Its parts include 49 diodes, 10 capacitors, 6 ICs, 5 resistors and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
The LPA is a device capable of illuminating each well of a 24-well plate with two independently time-varying light signals. An electronic board based on the Atmega328 microcontroller reads light intensity values from an SD card and controls the LEDs responsible for illumination.
This repository contains source files, needed to modify the LPA's design. To obtain the minimum necessary files for building and using an LPA, click here.
If you use the LPA in your research, please cite Gerhardt K.P., et al. "An open-hardware platform for optogenetics and photobiology." Scientific Reports 6 (2016) and/or Gerhardt K.P., Castillo-Hair S.M., and Tabor J.T. "DIY optogenetics: Building, programming, and using the Light Plate Apparatus." Methods Enzymol. (2019)
The documentation website for the LPA can be found in http://taborlab.github.io/LPA-hardware/.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | LED | LPA_parts:PCV220_LED_SOCKET | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 6 | 0.1 uF | LPA_parts:SM0805 | C1, C2, C6, C7, C8, C11 |
| 3 | 2.2K | LPA_parts:SM0805 | R3, R4, R5 |
| 3 | 330 | LPA_parts:SM0805 | R_ERR1, R_FIN1, R_ON1 |
| 3 | LED | LPA_parts:SM0805 | ERR1, FIN1, ON1 |
| 3 | TLC5941 | LPA_parts:TLC5941 | U3, U4, U5 |
| 2 | 10K | LPA_parts:SM0805 | R1, R2 |
| 2 | 12pF | LPA_parts:SM0805 | C9, C10 |
| 1 | 100uF | Capacitors_SMD:c_elec_6.3x7.7 | C3 |
| 1 | 150uH | LPA_parts:Inductor | L1 |
| 1 | 470uF | Capacitors_SMD:c_elec_8x10 | C5 |
| 1 | AP1509 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U2 |
| 1 | ATMEGA328-A | LPA_parts:ATMEGA328 | IC1 |
| 1 | BARREL_JACK | LPA_parts:BARREL_JACK_CIRCULAR_PADS | CON1 |
| 1 | CONN_3X2 | pin_array_3x2 | P2 |
| 1 | CRYSTAL_SMD | LPA_parts:CRYSTAL_SMD_3.2_2.5_4pins | X1 |
| 1 | D_Schottky | Diodes_SMD:SOD-123 | D49 |
| 1 | SD_CARD | LPA_parts:SD_CARD_SOCKET | U1 |
| 1 | SW_PUSH | Buttons_Switches_SMD:SW_SPST_PTS645 | RESET1 |
It measures 143 × 74 mm and has 2 copper layers, 1.6 mm thick.
81 parts, built around the ATMEGA328-AU, TLC5941RHB and AP1509-SG. 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 taborlab/LPA-hardware repository on GitHub, at the commit this page was made from: the board is CAD Files/Circuit Board/KiCAD Files/lpa.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 taborlab before reusing the design.
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