PCB Design LCD & DHT22
Budget: ₹1,500 – ₹12,500 INR
I’m putting together a compact, battery-powered module that reads a DHT22 and shows the temperature (and eventually humidity) on an LCD. What I need from you is the complete hardware design:
• a single-board layout that hosts
– a low-power MCU of your choice with a broken-out programming header
– the DHT22 footprint placed for good airflow
– a standard character LCD connector (16 × 2 or 20 × 4)
– an onboard battery with a safe charging circuit and protection
– regulated rails for both the sensor and display
The MCU will only handle temperature monitoring and pushing the readings to the LCD; I’ll take care of firmware once the board is finalized.
To make production painless, please deliver:
1. Schematic (KiCad, Altium or Eagle)
2. Fully routed PCB with clear silkscreen labels
3. Gerbers, drill files and pick-and-place files ready for JLCPCB
4. A BOM with current supplier part numbers
5. 3D STEP model for enclosure work
Acceptance criteria: the design passes ERC/DRC, draws minimal quiescent current, and fits inside an 80 × 50 mm outline.
If you have suggestions on component choices or power-path topology, feel free to propose them—flexibility is welcome so long as the LCD interface, DHT22 connection, and battery charging remain rock-solid.
• a single-board layout that hosts
– a low-power MCU of your choice with a broken-out programming header
– the DHT22 footprint placed for good airflow
– a standard character LCD connector (16 × 2 or 20 × 4)
– an onboard battery with a safe charging circuit and protection
– regulated rails for both the sensor and display
The MCU will only handle temperature monitoring and pushing the readings to the LCD; I’ll take care of firmware once the board is finalized.
To make production painless, please deliver:
1. Schematic (KiCad, Altium or Eagle)
2. Fully routed PCB with clear silkscreen labels
3. Gerbers, drill files and pick-and-place files ready for JLCPCB
4. A BOM with current supplier part numbers
5. 3D STEP model for enclosure work
Acceptance criteria: the design passes ERC/DRC, draws minimal quiescent current, and fits inside an 80 × 50 mm outline.
If you have suggestions on component choices or power-path topology, feel free to propose them—flexibility is welcome so long as the LCD interface, DHT22 connection, and battery charging remain rock-solid.