4 layers38.5 × 47 mm
4 layers63.5 × 21 mm
Nard sam
killergeek/nard108nard a dual sim/sam card interface for the flipper zero
- Size
- 63.5 × 21 mm
- Copper layers
- 4
- Thickness
- 1.56 mm
- Parts
- 29
- Nets
- 51
- Pads
- 151
- Tracks, vias
- 249, 53
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Mar 2023
- Updated
- 25 Nov 2024
Overview
Nard sam is an open-source printed circuit board by killergeek, from the killergeek/nard repository on GitHub, published under the MIT licence. It is a 4-layer board of 63.5 × 21 mm with 29 parts on 51 nets, routed with 249 tracks and 53 vias.
It is built around the ST4SIM-200M and M20-7910842R. Its parts include 9 capacitors, 7 resistors, 7 connectors, 2 ICs and 1 diode. It belongs with the interfaces and adapters boards of this library.
Main components
2README
README.mdNARD
NARD: a dual sim/sam card interface for the flipper zero
INFO
Its made to make working with smart card interface type ISO7816 easier on the flipper.
It fits on top of the flipper with a easy breakout on the back so the IO is still available and you can plug in other modules.
Just make sure those are not using PC0 and PC1. because those are used on the NARD.
PC0 and PC1 are used as a serial port to communicate with the SEC1210.
When you buy the SEC1210 make sure its the UART version not the USB!
And they come pre programmed with firmware from Microchip.
And use the CCID commands to interface: https://www.usb.org/sites/default/files/DWG_Smart-Card_CCID_Rev110.pdf
For information about how to communicate with the SEC1210: https://microchip.my.site.com/s/article/SEC1210-URT--Minimal-UART-Testing-on-Windows
Example of a serial command send to the SEC1210:
See below details for this CCID command (hex):
Hex Bytes: 03 06 62 00 00 00 00 01 01 00 00 00 67
*Byte 0 : SYNC (0x03)
*Byte 1 : CTRL (0x06)
*Byte 2 onwards:10 bytes of CCID header + data length: CCID command
*Last Byte: LRC (XOR of all the previous bytes)
so: SYNC, CTRL, , LRC
The SEC1210 information: https://www.microchip.com/en-us/product/SEC1210
sim card slot used.
slot1: 115J-BCO0
slot2: 115J-ACO0
you can find the sim sockets by https://www.tme.eu/
slot1 has the 2 extra pads C4 and C8.
simple list of items used:
TME.EU
115J-ACO0 ATTEND
115J-BCO0 ATTEND
MOUSER.com
855-M20-7910842R
200-SMH11002TSTR
81-BLM18EG221SN1D
71-CRCW0402J-43-E3
187-CL05A105KO5NNNC
81-GRM155R61A104KA01
187-CL05A106MP6NUN8
187-CL05A106MP6NUN8
279-CRG0402J100K/10
71-CRCW04021M00JNEDC
652-CR0402JW-331GLF
579-SEC1210IPVUR2
743-IN-S21AT5R
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C3, C4, C5 |
| 3 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C2, C6, C7 |
| 2 | 0R | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 10uF | Capacitor_SMD:C_0402_1005Metric | C8, C9 |
| 2 | 43R | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | SIM_Card | nard_sam:mixed_sim_sam_card_holder | J1, J2 |
| 1 | 100K | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 2A/0.05DCR | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 330R | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | Conn_01x04 | nard_sam:usb pads breakout | J5 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical_SMD_Pin1Left | J3 |
| 1 | Conn_01x10 | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical_SMD_Pin1Left | J4 |
| 1 | LED | LED_SMD:LED_0201_0603Metric | D1 |
| 1 | M20-7910842R | nard_sam:m20-7910842 | J6 |
| 1 | M20-7911042R | nard_sam:m20-7911042 | J7 |
| 1 | SEC1210 | Package_DFN_QFN:QFN-24-1EP_5x5mm_P0.65mm_EP3.2x3.2mm | U1 |
| 1 | ST4SIM-200M | nard_sam:ST4SIM-200M | U3 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | hardwire detect | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
Questions
How big is the Nard sam PCB?
It measures 63.5 × 21 mm and has 4 copper layers, 1.56 mm thick.
What parts does the Nard sam use?
29 parts, built around the ST4SIM-200M and M20-7910842R. 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.
Where can I download the Nard sam KiCad files?
From the killergeek/nard repository on GitHub, at the commit this page was made from: the board is Hardware/nard_sam.kicad_pcb and its schematic Hardware/nard_sam.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nard sam design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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