Dlr carrier
About the Dlr carrier PCB
Dlr carrier is an open source PCB design by arcnode-io, published on GitHub. It is a 4-layer board measuring 120 × 105 mm, with 89 components from 55 distinct parts.
Other key parts include the AP2112K-3.3, LP5907MFX-3.8, BG770A-NA, TXS0108E and DHT22. By type, the board carries 36 capacitors, 24 resistors, 11 connectors, 9 ICs, 4 diodes and 2 transistors.
It belongs with the power & battery, sensors and iot & wireless designs in this gallery.
From the project
Solar-powered RTU sensor HAT for transmission tower DLR deployment
Solar-powered remote terminal unit (RTU) deployed unattended on transmission tower cross-arms. A ~20W solar panel and ~50Wh LiFePO4 battery keep the CM4 running indefinitely with cellular PSM idle. A soldered Quectel BG770A (LTE Cat-M1) publishes sensor data and dynamic ratings to the MQTT broker — no site WiFi or wired backhaul required. The unit is designed for 30-year conductor-adjacent deployment with no scheduled maintenance.
Main components on the Dlr carrier
Dlr carrier bill of materials (BOM)
89 components, 55 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP2112K-3.3 | SOT-23-5 | U1 |
| 1 | LP5907MFX-3.8 | SOT-23-5 | U2 |
| 1 | BG770A-NA | Quectel_BG95 | U3 |
| 1 | TXS0108E | TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | DHT22 | Aosong_DHT11_5.5x12.0_P2.54mm | U5 |
| 1 | ADS1115 | MSOP-10_3x3mm_P0.5mm | U6 |
| 1 | SP3485EN | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | BQ24650RVAR | Texas_RVA_VQFN-16-1EP_3.5x3.5mm_P0.5mm_EP2.14x2.14mm_ThermalVias | U8 |
| 1 | LMR33630ADDA | Texas_HSOP-8-1EP_3.9x4.9mm_P1.27mm_ThermalVias | U9 |
| 2 | DMN4035L-7 | SOT-23 | Q1, Q2 |
| 1 | PV_IN | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | BAT | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3 |
| 1 | CM4_J2 | Hirose_DF40HC(3.0)-40DS-0.4V_2x20_P0.4mm | J5 |
| 1 | U.FL | U.FL_Hirose_U.FL-R-SMT-1_Vertical | J6 |
| 1 | SIM | microSIM_JAE_SF53S006VCBR2000 | J7 |
| 1 | FLIR_LEPTON_FFC | Hirose_FH12-14S-0.5SH_1x14-1MP_P0.50mm_Horizontal | J8 |
| 1 | SI1145 | PinHeader_1x05_P2.54mm_Vertical | J9 |
| 1 | YL-83 | PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | DEBUG_UART | PinHeader_1x04_P2.54mm_Vertical | J11 |
| 1 | USBC_COMMISSIONING | USB_C_Receptacle_GCT_USB4085 | J12 |
Show 35 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ANEMO_M12_5P | PinHeader_1x05_P2.54mm_Vertical | J13 |
| 1 | 250MA 250mA | R_1206_3216Metric | F1 |
| 1 | SS34 | D_SMA | D1 |
| 1 | SM712-LIKE SM712-like | SOT-23 | D2 |
| 1 | SMBJ24CA | D_SMB | D3 |
| 1 | BAT54W | SOT-323_SC-70 | D4 |
| 1 | 6.8UH 6.8uH | L_Bourns_SRN8040TA | L1 |
| 1 | 10UH 10uH | L_Bourns_SRN8040TA | L2 |
| 2 | 22UF 22uF | C_1206_3216Metric | C1, C3 |
| 8 | 100NF 100nF | C_0402_1005Metric | C2, C6, C9, C19, C20, C30, C34, C35 |
| 1 | 10UF 10uF | C_1206_3216Metric | C4 |
| 1 | 220NF 220nF | C_0402_1005Metric | C5 |
| 1 | 470UF 470uF | CP_Elec_8x10 | C7 |
| 1 | 22UF 22uF | C_0805_2012Metric | C8 |
| 7 | 1uF | C_0402_1005Metric | C10, C11, C12, C13, C31, C32, C33 |
| 10 | 100nF | C_0402_1005Metric | C14, C15, C16, C17, C23, C24, C25, C26 +2 |
| 1 | 4.7UF 4.7uF | C_0402_1005Metric | C18 |
| 2 | DNP | C_0402_1005Metric | C21, C22 |
| 1 | 10NF 10nF | C_0402_1005Metric | C29 |
| 1 | 1UF 1uF | C_0402_1005Metric | C36 |
| 1 | 20M 20m | R_1206_3216Metric | R1 |
| 2 | 100K 100k | R_0402_1005Metric | R2, R6 |
| 1 | 24.9K 24.9k | R_0402_1005Metric | R3 |
| 1 | 0R | R_0402_1005Metric | R5 |
| 3 | 10k | R_0402_1005Metric | R7, R8, R9 |
| 2 | 2.2K 2.2k | R_0402_1005Metric | R10, R11 |
| 2 | 5.1K 5.1k | R_0402_1005Metric | R12, R13 |
| 1 | 120 | R_0402_1005Metric | R14 |
| 2 | 680 | R_0402_1005Metric | R15, R16 |
| 1 | 10 | R_0402_1005Metric | R17 |
| 1 | 130K 130k | R_0402_1005Metric | R18 |
| 4 | 10K 10k | R_0402_1005Metric | R19, R22, R24, R25 |
| 1 | 297K 297k | R_0402_1005Metric | R20 |
| 1 | 49.9K 49.9k | R_0402_1005Metric | R21 |
| 1 | 15K 15k | R_0402_1005Metric | R23 |
Dlr carrier design files
The KiCad project lives in the arcnode-io/dlr-rtu-pcb repository on GitHub; these links point at the commit this page was built from.
- Layoutcad/dlr_carrier.kicad_pcb
- Schematiccad/dlr_carrier.kicad_sch
- BOMoutput/fab/bom.csv
Dlr carrier: common questions
How big is the Dlr carrier PCB?
The Dlr carrier measures 120 × 105 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Dlr carrier?
89 components, from 55 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 Dlr carrier design files?
From the arcnode-io/dlr-rtu-pcb 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 Dlr carrier design in my own project?
The repository has no license, so all rights stay with arcnode-io. Use it as a reference, and ask the author before reusing the design.
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