Dallas
About the Dallas PCB
Dallas is an open source PCB design by kab01m, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 30.5 × 17.2 mm, with 10 components from 6 distinct parts.
Other key parts include the bq3285LF. By type, the board carries 5 resistors, 2 connectors, 1 IC and 1 crystal.
From the project
DV-87-12 is a replacement module for Dallas DS1287
This project is a complete replacement of widely used RTC modules DS1287, DS12887, DS12887+ originally made by Dallas and their derivatives.
Contents of this repository may be freely used for any purpose including PCB manufacturing and product selling with original copyright marking, you can use gerber files included. DV-87-12 and DV-87-12R were made in DipTrace and DV-87-12SR was made in KiCad EDA 8.0.
Main components on the Dallas
Dallas bill of materials (BOM)
10 components, 6 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | bq3285LF | SSOP-24_3.9x8.7mm_P0.635mm | U1 |
| 1 | 32,768 kHz | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 2 | Conn_01x12_Pin | PinHeader_1x12_P2.54mm_Vertical | J1, J2 |
| 1 | Battery_Cell | BatteryHolder_Renata_SMTU1225-LF_1x1225 | B1 |
| 3 | 0R | R_0805_2012Metric | R1, R4, R5 |
| 2 | 10K | R_0805_2012Metric | R2, R3 |
Dallas design files
The KiCad project lives in the kab01m/dallas repository on GitHub; these links point at the commit this page was built from.
Dallas: common questions
How big is the Dallas PCB?
The Dallas measures 30.5 × 17.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dallas?
10 components, from 6 distinct parts. The full bill of materials is listed on this page.
Where can I download the Dallas design files?
From the kab01m/dallas repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Dallas design in my own project?
Yes, under the terms of its GPL-3.0 license, which kab01m chose for the repository.