Input Gain and Volume Control Design

flux

0:00

Work completed

Project description updated to “Hand-Gesture Car Transmitter with Arduino Nano, nRF24L01, and MPU6500”
System architecture defined in Mermaid and stored in project properties
Major ICs and modules placed: Arduino Nano header/module, nRF24L01 wireless module, MPU6500 IMU, 3.3 V LDO regulator, PCA9306 I2C level shifter
0.1 µF decoupling capacitors added at each IC power pin

Tasks remaining

Add 10 µF bulk capacitors near the LDO output and at each module power input
Add 4.7 kΩ pull-up resistors on SDA/SCL lines
Place connectors (USB power, battery input, programming/test header)
Wire power nets (VIN/5 V → LDO IN, LDO OUT → 3.3 V, common GND)
Wire SPI nets between Nano and nRF24L01
Wire I2C nets through PCA9306 to the MPU6500
Wire control pins (nRF24L01 CE/CSN, LDO EN)
Review schematic completeness, adjust passive ratings, assign footprints
Define board outline, layer stackup, ground pour, mounting holes, and preliminary component placement

Success criteria status

✅ Arduino Nano, nRF24L01, MPU6500, LDO, decoupling caps, and level shifter are in place
⚠️ Bulk capacitors, I2C pull-ups, full net wiring, connectors, and PCB prep are still pending

Next step Add the 10 µF bulk decoupling capacitors and the 4.7 kΩ I2C pull-up resistors in the schematic to complete the supporting power network.

130 days

Ready.

Reviews

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