Realm card
About the Realm card PCB
Realm card is an open source PCB design by TommyStyrvoky, published on GitHub under the MIT license. It is a 2-layer board measuring 50 × 40 mm, with 22 components from 14 distinct parts.
Other key parts include the MCP73831-2-OT. By type, the board carries 11 resistors, 4 connectors, 3 capacitors, 2 diodes, 1 IC and 1 switch.
It belongs with the displays & leds and power & battery designs in this gallery.
From the project
The length of the animations are limited by the resolution, as the maximum number of frames is limited by RAM space. The animations are stored in directories under the root of the SD card, these folders are read from and 24 bit bmp images starting from and index of 1 to the maxim
The length of the animations are limited by the resolution, as the maximum number of frames is limited by RAM space. The animations are stored in directories under the root of the SD card, these folders are read from and 24 bit bmp images starting from and index of 1 to the maximum number of frames availible or maximum memory will be stored.
The addition of -L to the end of a directory name will make it loop without a randomized delay after completion of the animation.
Main components on the Realm card
Realm card bill of materials (BOM)
22 components, 14 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP73831-2-OT | SOT-23-5 | U1 |
| 1 | CONN_02X07_TOP_BOTTOM Conn_02x07_Top_Bottom | Adafruit QT PY | J1 |
| 1 | C585350 Micro_SD_Card | microSD_HC_Molex_104031-0811 | J2 |
| 1 | CONN_01X02_FEMALE Conn_01x02_Female | JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J3 |
| 1 | CONN_02X25_TOP_BOTTOM Conn_02x25_Top_Bottom | Hirose_FH12-50S-0.5SH_1x50-1MP_P0.50mm_Horizontal | J4 |
| 1 | C221660 SW_SPDT | SW_SPDT_CK-JS102011SAQN | SW1 |
| 1 | C2296 LED 20 mA @2V | LED_0805_2012Metric | D1 |
| 1 | C236132 20V 1A | D_SOD-123 | D3 |
| 2 | 10UF 10uF | C_0805_2012Metric | C1, C3 |
| 1 | 0.1UF 0.1uf | C_0805_2012Metric | C2 |
| 4 | 100K | R_0805_2012Metric | R1, R2, R3, R4 |
| 2 | 10K | R_0805_2012Metric | R5, R12 |
| 1 | 68 | R_0805_2012Metric | R6 |
| 4 | 10 | R_0805_2012Metric | R8, R9, R10, R11 |
Realm card design files
The KiCad project lives in the TommyStyrvoky/Realm-card repository on GitHub; these links point at the commit this page was built from.
Realm card: common questions
How big is the Realm card PCB?
The Realm card measures 50 × 40 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Realm card?
22 components, from 14 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 Realm card design files?
From the TommyStyrvoky/Realm-card 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 Realm card design in my own project?
Yes, under the terms of its MIT license, which TommyStyrvoky chose for the repository.
Similar boards
Grid10x10
atopile
33.6 × 35.5 mm200 parts4LMIT4.0k
Sub
3 parts2LMIT4.0k
Strip10
33.6 × 2 mm20 parts2LMIT4.0k
Display Carrier
AxxAxx
35.6 × 58.2 mm5 parts2LGPL-3.01.7k
TemperaturePCB PANEL
stuartpittaway
116 × 75.5 mm178 parts2LCC-BY-NC-4.01.1k
Module 16S PassiveBalanceAddOn
61 × 74 mm86 parts2LCC-BY-NC-4.01.1k