Altium Designer for IoT Meter & Valve Controller
Budget: $30 – $250 NZD
Project Header
Altium PCB Design — nRF9151 LTE-M/NB-IoT Meter & Valve Controller (4-Layer, RF Critical)
Project Description
I need a 4-layer Altium Designer PCB for a battery-powered IoT field device built around the Nordic nRF9151 cellular SiP. The board reads an external optical electricity meter probe (IEC 62056-21, UART), counts pulses from a water meter, and drives an external 3.6V DC valve actuator through an onboard H-bridge — sending telemetry over LTE-M/NB-IoT via MQTT. Power comes from an external 3.6V Li-SOCl2 battery pack (not charged on-board).
Scope:
Full Altium project: 10 schematic pages (system overview, nRF9151 core, power/protection, load switches, optical interface, pulse input, valve H-bridge, SIM, RF/antenna, programming/debug)
4-layer stack-up with 50Ω controlled-impedance RF routing for the nRF9151 antenna path, following Nordic's reference layout and pi-matching network
Battery input protection (reverse-polarity MOSFET, low-leakage TVS, PTC/fuse), nRF9151 power sequencing per Nordic guidelines, load-switched rails for the optical probe
H-bridge valve driver (e.g. DRV8212) with safe default-off states and ADC monitoring for battery, valve rail, and fault detection
Nano SIM, U.FL antenna connector, Tag-Connect SWD, USB-C debug (service only, no battery charging)
Critical deliverable: nRF9151 LGA footprint must be verified against Nordic's official reference design — pad dimensions, pin-1 orientation, ANT/GPS/SIM/SWD pin checks, solder mask/paste settings — with findings documented in a written report
Full manufacturing outputs: Gerbers, drill, pick-and-place, BOM, assembly/fab drawings, ERC/DRC reports, 3D STEP export
All Altium source files (.PrjPcb, .SchDoc, .PcbDoc, .SchLib, .PcbLib, .IntLib) must open cleanly on another machine with no missing libraries
Industrial-grade component selection throughout (−40°C to +85°C minimum, prefer +105°C/+125°C for power and RF-adjacent parts). RF performance, low quiescent leakage, and physical separation of motor/power zones from the RF zone are top priorities.
A detailed requirements document (component preferences, net classes, layout zones, acceptance criteria) will be provided to the awarded freelancer.
Altium PCB Design — nRF9151 LTE-M/NB-IoT Meter & Valve Controller (4-Layer, RF Critical)
Project Description
I need a 4-layer Altium Designer PCB for a battery-powered IoT field device built around the Nordic nRF9151 cellular SiP. The board reads an external optical electricity meter probe (IEC 62056-21, UART), counts pulses from a water meter, and drives an external 3.6V DC valve actuator through an onboard H-bridge — sending telemetry over LTE-M/NB-IoT via MQTT. Power comes from an external 3.6V Li-SOCl2 battery pack (not charged on-board).
Scope:
Full Altium project: 10 schematic pages (system overview, nRF9151 core, power/protection, load switches, optical interface, pulse input, valve H-bridge, SIM, RF/antenna, programming/debug)
4-layer stack-up with 50Ω controlled-impedance RF routing for the nRF9151 antenna path, following Nordic's reference layout and pi-matching network
Battery input protection (reverse-polarity MOSFET, low-leakage TVS, PTC/fuse), nRF9151 power sequencing per Nordic guidelines, load-switched rails for the optical probe
H-bridge valve driver (e.g. DRV8212) with safe default-off states and ADC monitoring for battery, valve rail, and fault detection
Nano SIM, U.FL antenna connector, Tag-Connect SWD, USB-C debug (service only, no battery charging)
Critical deliverable: nRF9151 LGA footprint must be verified against Nordic's official reference design — pad dimensions, pin-1 orientation, ANT/GPS/SIM/SWD pin checks, solder mask/paste settings — with findings documented in a written report
Full manufacturing outputs: Gerbers, drill, pick-and-place, BOM, assembly/fab drawings, ERC/DRC reports, 3D STEP export
All Altium source files (.PrjPcb, .SchDoc, .PcbDoc, .SchLib, .PcbLib, .IntLib) must open cleanly on another machine with no missing libraries
Industrial-grade component selection throughout (−40°C to +85°C minimum, prefer +105°C/+125°C for power and RF-adjacent parts). RF performance, low quiescent leakage, and physical separation of motor/power zones from the RF zone are top priorities.
A detailed requirements document (component preferences, net classes, layout zones, acceptance criteria) will be provided to the awarded freelancer.
Related categories:
Electronics
Electrical Engineering
PCB Layout
Circuit Design
MQTT
Antenna Design
Embedded Systems
Altium Designer