The Elektor LoRa Node
Versatile, long-range, 868-MHz remote control with state feedback and STM32 Inside
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Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Components
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Component List
For LoRAWAN Experimental Platform board
Note: 2 required, 1 for Switch, 1 for Button.
Resistors
R1 = 100kΩ, thick film, 5%, 0.1W, 150V
R2,R10 = 680Ω, thick film, 5%, 0.1W, 150V
R3,R8,R9 = 4.7kΩ, thick film, 5%, 0.1W, 150V
R4,R5,R11 = 10kΩ, thick film, 5%, 0.1W, 150V
R6,R7 = 150kΩ, thick film, 5%, 0.1W, 150V
Capacitors
C1,C5,C8,C14,C15 = 4.7µF, 16V, X7R, SMD 0805
C2,C3,C7,C9,C10,C11,C12,C17,C18 = 100nF, 50V, X7R, SMD 0805
C4 = see text
C6 = 470nF, 25V, X7R, SMD 0805
C16 = not fitted
C20 = not fitted
C19,C21 = 100µF, 10V, SMD 1206 [3216 Metric], ± 20%, X5R
Semiconductors
D1 = PMEG3010EJ, 115, diode, 30V, 1A
LED1 = low current, red, SMD 0805
LED2 = low current, green, SMD 0805
T1 = SI2347DS, MOSFET, p-channel, 5A, 30V, 0.033Ω
IC1 = TLV809K33DBVR, voltage supervisor
IC2 = TLV75533PDBVR, 3V3 LDO, 500mA, low-IQ, SOT-23-5
IC3 = optional. Space for: AT25SF081-SSHD-T 8Mbit flash IC
IC4 = STM32F072C8T6TR ARM Cortex-M0 microcontroller
IC5 = optional. Space for: ATECC608A-SSHDA-B, CryptoAuthentification
IC6,IC7 = MAX40200AUK+T ‘Ideal Diode’ controller, 1-channel, 1A
MOD1 = RFM95W-868S2 LoRa transceiver, Elektor Store SKU 18715
Miscellaneous
X1 = 32.768 kHz oscillator module, SMD, 3.2mm x 1.5mm (Abracon ASH7KW-32.768KHZ-L-T)
S1,S2 = switch, tactile feedback, 12V, 50mA (Multicomp TM-553I-Q-T/R)
Bt1, Bt2 = optional. Space for: AAA battery holder with PCB pins (Multicomp MP000341)
F1,F2 = 500mA PPTC resettable fuse (Bel Fuse 0ZCK0050FF2E)
K1 = PCB pin
K2 = 2-pin pinheader
K3 = 4-pin SIL pinheader
K4 = 5-pin pinheader
K5 = 17-way SIL pinheader
K6 = 3-pin pinheader
K5,K6,K3,K4 = 40-pin SIL pinheader
ANT1 = Wire antenna, 1mm enamelled copper wire, length 8.2cm
PCB 180516 V3.1 from Elektor Store
Component List
For Lora AC Switch Board
Resistors
R1 = NTC, 120Ω, Epcos type B57236S0121M000
R2,R3 = 10Ω, carbon film, 5%, 0.25W, 250V
R4 = 100kΩ, carbon film, 5%, 0.25W, 250V
R5,R6 = 47kΩ, carbon film, 5%, 0.25W, 250V
R7,R8 = 1kΩ, carbon film, 5%, 0.25W, 250V
Inductor
L1 = ACM4520V-231-2P-T common-mode filter (Farnell # 2455201)
Capacitors
C1,C2 = 100nF, 50V, X7R, 0.2’’ (5.08mm) pitch
C3 = 1µF, 16V, radial, 5mm
C4 = 10µF, 16V, radial, 5mm
Semiconductors
D1,D2 = 1N4148
D3 = 1N4007
T1,T2 = BS170
IC1 = CNY65 optocoupler
Miscellaneous
RE1 = G5RLK1AEDC5 power relay, latching dual coil, 5V, 16A, SPST (Omron)
K1,K2 = 3-way PCB screw terminal block, 0.3’’ (7.62 mm), 500V
K3 = 2-row board-to-board connector, 0.1’’ (2.54mm) pitch, 16 contacts, receptacle, WR-PHD series, surface mount (Würth # 610316243021)
S1 = Pushbutton switch, IP68 class (Alcoswitch PB6B2FM3M1CAL07)
MOD1 = AC/DC PCB mount power supply 5V, 200mA (Mean Well IRM-02-5)
F1,F2 = Fuseholder, PCB mount, 5x20mm
F1 = 60mAT fuse, 20mm
F2 = 5AT fuse, 20mm
PCB 180666-1 V1.1 from Elektor Store
Case: HAMMOND 1591-ATBU (Ice Blue)
Component List
For LoRa Button board
Resistors
R1 = 270Ω, carbon film, 5%, 0.25W, 250V
R2 = 10kΩ, carbon film, 5%, 0.25W, 250V
R3,R4 = 680Ω, carbon film, 5%, 0.25W, 250V
Semiconductors
LED2 = red, 3mm
LED1 = green, 3mm
Miscellaneous
K2,K4 = 2-way PCB screw terminal block, 0.2’’ pitch (5.08mm), 630V
K3 = pinheader socket, breakable, 1 row, 5-way, vertical
K5 = pinheader socket, breakable, 1 row, 17-way, vertical (see text)
K6 = Pinheader socket, breakable, 1 row, 3-way, vertical
1 pc. Switch with blue integral LED
Miscellaneous
Blue 0.96" OLED display, I²C, 4-pin (optional)
PCB 180666-2 V1.2 from Elektor Store
Case: Spelsberg type TK PS 94 x 94 x 57 mm, IP66
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