4 layers99.1 × 91.4 mm
2 layers61.5 × 25 mm
ElaraGNSSMKRShield
generationmake/ElaraGNSSMKRShieldGNSS Shield with Wuerth Elara for Arduino MKR
- Size
- 61.5 × 25 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 26
- Pads
- 129
- Tracks, vias
- 310, 39
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Nov 2020
- Updated
- 22 Dec 2020
Overview
ElaraGNSSMKRShield is an open-source printed circuit board by generationmake, from the generationmake/ElaraGNSSMKRShield repository on GitHub. It is a 2-layer board of 61.5 × 25 mm with 39 parts on 26 nets, routed with 310 tracks and 39 vias.
It is built around the SN74LVC2G34DBV, PCA9306D and TPS73618DBV, with the BSS138 and 150060GS75000 among its other parts. Its parts include 21 resistors, 5 capacitors, 4 ICs, 3 inductors and 2 transistors. It belongs with the radio and wireless boards of this library.
Main components
5
SN74LVC2G34DBV
SOT-23-6-40℃~+125℃ 1 1.65V~5.5V 10uA 2 32mA 32mA 4.1ns@3.3V,50pF 74LVC Unidirectional SOT-23-6 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
PCA9306D
SO-8-40℃~+105℃ 1 1.8V~5.5V 1V~3.6V 2 2Mbps Automatic direction detection、Output enable high-impedance Bidirectional Level translator Open-drain SMBus、I2C SO-8 Translators, Level Shifters ROHSNXP SemiconductorsTranslators, Level Shifters
TPS73618DBV
SOT-23-5-40℃~+125℃@(Tj) 1 1.8V 200mV@(400mA) 30uVrms 5.5V 500mA 550uA 58dB@(100Hz) Fixed Over Current Protection、Over Temperature Protection、Over Voltage Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
150060GS75000
0603-40℃~+85℃ 140° 20mA 3.2V 430mcd 515nm 525nm Discrete Diode Green Water Clear 0603 LED Indication - Discrete ROHSWürth ElektronikLED Indication - Discrete
README
README.mdElaraGNSSMKRShield
GNSS Shield with Wuerth Elara for Arduino MKR
pin usage
Arduino MKR connector CN1
| Pin | Pin Name | Signal | Description |
|---|---|---|---|
| 1 | AREF | ||
| 2 | DAC0/A0 | ||
| 3 | A1 | ||
| 4 | A2 | ||
| 5 | A3 | ||
| 6 | A4 | ||
| 7 | A5 | ||
| 8 | A6 | ||
| 9 | 0 | WAKE_UP | wake signal to Elara GNSS |
| 10 | 1 | 1PPS | 1PPS signal from Elara GNSS |
| 11 | 2 | ||
| 12 | 3 | ||
| 13 | 4 | ||
| 14 | 5 | ON_OFF | switch Elara GNSS on and off |
| 15 | 6 | ||
| 16 | 7 | ||
| 17 | 8/MOSI | ||
| 18 | 9/SCK | ||
| 19 | 10/MISO | ||
| 20 | 11/SDA | I2C_SDA | to Elara GNSS if I2C option is used |
| 21 | 12/SCL | I2C_SCL | to Elara GNSS if I2C option is used |
| 22 | 13/RX | SERIAL_RX | to Elara GNSS if serial option is used |
| 23 | 14/TX | SERIAL_TX | to Elara GNSS if serial option is used |
| 24 | RESET | ||
| 25 | GND | GND | |
| 26 | VCC | 3V3-rail | supply voltage for board |
| 27 | VIN | ||
| 28 | 5V0 |
SMA connector CN2
SMA coax connector.
| Pin | Signal | Description |
|---|---|---|
| center | 1PPS | |
| shield | GND |
PCB
Top
Bottom
Variants
By default the Elara GNSS is connected via I2C. It is possible to connect to serial.
BOM changes
The following parts need to be changed:
| part | I2C variant | serial variant |
|---|---|---|
| R2 | 10k | DNI |
| R3 | DNI | 10k |
| R9 | 0R | DNI |
| R10 | 0R | DNI |
| R11 | DNI | 0R |
| R12 | DNI | 0R |
Resources
Datasheets
Arduino Libraries
License
This hardware is licensed under the CERN OHL v. 1.2
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | resistors:R_0603 | R1, R2, R13, R18, R19, R20, R21 |
| 6 | 0R | resistors:R_0603 | R9, R10, R11, R12, R15, R16 |
| 4 | 885012206095 | capacitors:C_0603 | C1, C2, C3, C5 |
| 4 | DNI | resistors:R_0603 | R3, R4, R5, R17 |
| 3 | 1k | resistors:R_0603 | R7, R8, R14 |
| 2 | BSS138 | SOT_TO:SOT-23 | Q1, Q2 |
| 1 | 150060GS75000 | LEDs:LED_0603 | D1 |
| 1 | 200k | resistors:R_0603 | R6 |
| 1 | 2613011037000 | RF_GPS:wuerth_WIRL-POSI_Elara-I | U2 |
| 1 | 60312202114509 | CON_wuerth:WR-SMA-PCB | CN2 |
| 1 | 885012206077 | capacitors:C_0603 | C4 |
| 1 | ARDUINO_MKR | MODULE_compute:ARDUINO_MKR_HOLES_PINHEADER_EDGE | CN1 |
| 1 | Label | Symbol:OSHW-Logo_5.7x6mm_SilkScreen | L3 |
| 1 | Label | labels:generationmake_logo | L2 |
| 1 | Label | labels:generationmake_small_solder | L1 |
| 1 | PCA9306 | SSOP:TSSOP-8_3x3mm_Pitch0.65mm | U3 |
| 1 | SN74LVC2G34 | SOT_TO:SOT-23-6 | U4 |
| 1 | TEST_1P | wire_pads:SolderWirePad_single_1mmSMD | W1 |
| 1 | TPS73618DBV | SOT_TO:SOT-23-5 | U1 |
Questions
How big is the ElaraGNSSMKRShield PCB?
It measures 61.5 × 25 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ElaraGNSSMKRShield use?
39 parts, built around the SN74LVC2G34DBV, PCA9306D, TPS73618DBV and BSS138. 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 ElaraGNSSMKRShield KiCad files?
From the generationmake/ElaraGNSSMKRShield repository on GitHub, at the commit this page was made from: the board is kicad_source/ElaraGNSSMKRShield.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ElaraGNSSMKRShield design in my own project?
Its repository states no licence, so its author keeps all rights: ask generationmake before reusing the design.
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