Lta logic module
About the Lta logic module
Lta logic module is an open source AVR/Arduino PCB design by kimballa, published on GitHub. It is a 2-layer board measuring 125 × 89.5 mm, with 79 components from 31 distinct parts.
Its main chip is the FEATHER_M4_EXPRESS, from the AVR/Arduino family. Other key parts include the LM2595T-5.0/NOPB, PCF8574DW, SN74LVC00AD, SN74LVC244ADWR and SN74LVC14AD. By type, the board carries 32 resistors, 21 capacitors, 12 ICs, 4 connectors, 4 diodes and 2 transistors.
From the project
PCB Schematics for Like The Art project
You Don't Have to Like All the Art! -- PCBs ===========================================
PCB designs and eCAD files for the "You Don't Have to Like All the Art!" project.
This system consists of two distinct circuit boards:
lta-logic-module - The "logic" that determines when it's dark out / should be active, what messages to light up on the sign, manages PWM or other effects when displaying the sign, and also handles button inputs from users. Runs on a combination of 5V and 3V3. This is designed around a port for installing an Adafruit Feather M4 Express (ATSAMD51 / Cortex-M4) Arduino…
Main components on the Lta logic module
Lta logic module bill of materials (BOM)
79 components, 31 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | FEATHER_M4_EXPRESS Feather_M4_Express | Arduino_Feather_M4_Express_PinHeaders | U1 |
| 1 | LM2595T-5.0/NOPB LM2595T-5 Texas Instruments | TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical-SilkFix | U2 |
| 3 | PCF8574DW Texas Instruments | TI_SOIC_DW0016A | U3, U4, U5 |
| 4 | SN74LVC00AD Texas Instruments | TI_SOIC_D_R-PDSO-G14 | U6, U7, U9, U10 |
| 1 | SN74LVC244ADWR Texas Instruments | TI_SOIC_DW0020A | U8 |
| 2 | SN74LVC14AD Texas Instruments | TI_SOIC_D_R-PDSO-G14 | U11, U12 |
| 1 | PT334-6B Everlight | PinHeader_1x02_P2.54mm_Vertical | Q1 |
| 1 | 2N3904 PBFREE 2N3904 Central Semiconductor | TO-92_Inline | Q2 |
| 1 | 436500218 Molex-MicroFit_43650-0218 Molex | Molex-Microfit-43650-0218 | J1 |
| 3 | 532531270 Molex-MicroLatch_53253-1270 Molex | Molex-MicroLatch-53253-1270 | J2, J3, J4 |
| 1 | JUMPER_3_OPEN Jumper_3_Open | PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | 3362P-1-253LF 25K Bourns | TRIM_3362P | RV1 |
| 1 | DS01-254-S-01BE SW_SPST CUI Devices | CUI-DIP-SW_DS01-254-x-01xx | SW1 |
| 1 | SB5100 SMC Diode Solutions | D_DO-201AD_P15.24mm_Horizontal | D1 |
| 1 | SB530-E3/54 SB530 Vishay | D_DO-201AD_P15.24mm_Horizontal | D2 |
| 1 | 3147-B1931URO-20D000114U1930CT-ND PWR Harvatek | LED_0603_1608Metric | D3 |
| 1 | 3147-B1931URO-20D000114U1930CT-ND DARK_EN Harvatek | LED_0603_1608Metric | D4 |
| 1 | AIUR-06-151K 150u Abracon LLC | L_Radial_D13.5mm_P7.50mm | L1 |
| 1 | TPSD226K025R0200 22u KYOCERA AVX | CP_EIA-7343-30_AVX-N | C1 |
| 11 | 06036C104JAT2A 100n KYOCERA | C_0603_1608Metric | C2, C7, C8, C9, C10, C12, C14, C16 +3 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | 0603YC105JAT2A 1u KYOCERA | C_0603_1608Metric | C3, C11, C13, C15, C17, C18 |
| 1 | 0805YC475KAT2A 4u7 KYOCERA | C_0805_2012Metric | C4 |
| 1 | EST227M035AG4AA 220u KEMET | CP_Radial_D8.0mm_P3.50mm | C5 |
| 1 | TPSD686M020R0150 68u KYOCERA AVX | CP_EIA-7343-30_AVX-N | C6 |
| 13 | RC0603FR-0710KL 10K YAEGO | R_0603_1608Metric | R1, R6, R7, R8, R9, R10, R11, R12 +5 |
| 1 | RC0603FR-07330RL 330R YAEGO | R_0603_1608Metric | R2 |
| 5 | RC0603FR-074K7L 4K7 YAEGO | R_0603_1608Metric | R3, R4, R5, R27, R30 |
| 10 | RC0603FR-07470RL 470R YAEGO | R_0603_1608Metric | R15, R16, R17, R18, R19, R20, R21, R22 +2 |
| 1 | RC0603FR-07220RL 220R YAEGO | R_0603_1608Metric | R29 |
| 1 | RC0603FR-07220KL 220K YAEGO | R_0603_1608Metric | R31 |
| 1 | RC0603FR-07120RL 120R YAEGO | R_0603_1608Metric | R32 |
Lta logic module design files
The KiCad project lives in the kimballa/like-the-art-pcb repository on GitHub; these links point at the commit this page was built from.
Lta logic module: common questions
What microcontroller does the Lta logic module use?
The Lta logic module is built around the FEATHER_M4_EXPRESS, from the AVR/Arduino family.
How big is the Lta logic module?
The Lta logic module measures 125 × 89.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Lta logic module?
79 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 Lta logic module design files?
From the kimballa/like-the-art-pcb 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 Lta logic module design in my own project?
The repository has no license, so all rights stay with kimballa. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Lta logic module 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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