

DDRN Hardware
- Size
- 30 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 42
- Pads
- 126
- Tracks, vias
- 187, 29
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 14 Sep 2023
- Updated
- 1 Oct 2024
Overview
DDRN Hardware is an open-source printed circuit board by davidfobar, from the davidfobar/SCRAM repository on GitHub. It is a 2-layer board of 30 × 50 mm with 29 parts on 42 nets, routed with 187 tracks and 29 vias.
It is built around the LORA-E5-HF, MAX1932ETC+ and AP2112K-3.3, with the BSS119N and CDBW46-G among its other parts. Its parts include 10 capacitors, 6 resistors, 3 ICs, 3 connectors and 1 diode.
Main components
5LORA-E5-HF
SMD,12x12mmSMD,12x12mm LoRa Modules ROHSSeeedLoRa ModulesMAX1932ETC+
TQFN-12(4x4)Dynamic voltage regulation、Overcurrent Protection、Operation status indication TQFN-12(4x4) DC-DC Converters ROHSMaxim Integrated (Analog Devices)Power Management - SpecializedAP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedBSS119N
SOT-23-55℃~+150℃ 1 N-channel 1.9V 100V 15pF 170mA 2.8pF 350mW 3Ω@10V 43pF N-Channel ±20V SOT-23 MOSFETs ROHSTECH PUBLICMOSFETsCDBW46-G
SOD-123100V 150mA 2uA@75V 450mV@10mA SOD-123 Schottky Diodes ROHSComchipSchottky Diodes
README
README.mdSCRAM
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 2 | 0.01u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C5 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C10 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C9 |
| 2 | DNP | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12 |
| 1 | 0R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 150uH | Library:SRN4026 | L1 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 2.0k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 205k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 32.4k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 4.02k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | BSS119 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | CDBW46-G | Diode_SMD:D_SOD-123 | D1 |
| 1 | Conn_01x06_Pin | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J5 |
| 1 | Conn_01x14_Pin | Connector:Tag-Connect_TC2070-IDC-FP_2x07_P1.27mm_Vertical | J1 |
| 1 | Conn_Coaxial | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J2 |
| 1 | LoRa-E5 | LoRa-E5:LoRa-E5 | U1 |
| 1 | MAX1932 | Library:MAX1932_handsolder | U2 |
Questions
How big is the DDRN Hardware PCB?
It measures 30 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DDRN Hardware use?
29 parts, built around the LORA-E5-HF, MAX1932ETC+, AP2112K-3.3 and BSS119N. 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 DDRN Hardware KiCad files?
From the davidfobar/SCRAM repository on GitHub, at the commit this page was made from: the board is DDRN_Hardware/v0.1_perdue/DDRN_Hardware.kicad_pcb and its schematic DDRN_Hardware/v0.1/DDRN_Hardware.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DDRN Hardware design in my own project?
Its repository states no licence, so its author keeps all rights: ask davidfobar before reusing the design.
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