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Transmitter Schematics

devansh2004sharma-tech·nrf24-rc-car-controller

Transmitter Schematics PCB layout, top view — open source AVR/Arduino board by devansh2004sharma-tech

About the Transmitter Schematics PCB

Transmitter Schematics is an open source AVR/Arduino PCB design by devansh2004sharma-tech, published on GitHub. It is a 2-layer board measuring 49.5 × 78 mm, with 14 components from 7 distinct parts.

Its main chip is the ATtiny85-20P, from the AVR/Arduino family. Other key parts include the NRF24L01_Breakout. By type, the board carries 4 switches, 4 resistors, 3 capacitors, 2 ICs and 1 battery holder.

It belongs with the iot & wireless and robotics & motion designs in this gallery.

From the project

KiCad schematics and PCB layouts for a wireless RC car — ATtiny85 remote (TX) and ATmega328P motor-control receiver (RX), linked over NRF24L01+.

A two-board wireless RC car electronics design, built as a solo project: a compact ATtiny85-based handheld remote transmitting over an NRF24L01+ 2.4GHz radio link, and an ATmega328P-based receiver board that decodes commands and drives two DC motors through a DRV8833 dual H-bridge. Designed end-to-end in KiCad — schematics, PCB layout, and manufacturing (gerber) files for both boards.

Main components on the Transmitter Schematics

ATtiny85-20PNRF24L01_Breakout

Transmitter Schematics bill of materials (BOM)

14 components, 7 distinct parts.

QtyPartRefs
1
ATtiny85-20P
U1
1
NRF24L01_Breakout
U2
1
Battery
BT1
4
SW_Push
SW1, SW2, SW3, SW4
2
C
C1, C3
1
C_Polarized
C2
4
R
R1, R2, R3, R4

Transmitter Schematics design files

The KiCad project lives in the devansh2004sharma-tech/nrf24-rc-car-controller repository on GitHub; these links point at the commit this page was built from.

Transmitter Schematics: common questions

What microcontroller does the Transmitter Schematics use?

The Transmitter Schematics is built around the ATtiny85-20P, from the AVR/Arduino family.

How big is the Transmitter Schematics PCB?

The Transmitter Schematics measures 49.5 × 78 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Transmitter Schematics?

14 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the Transmitter Schematics design files?

From the devansh2004sharma-tech/nrf24-rc-car-controller repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Transmitter Schematics design in my own project?

The repository has no license, so all rights stay with devansh2004sharma-tech. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Transmitter Schematics without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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