zosko/NoahESC3NoahESC - Atmega8 based ESC
NoahESC is an open-source printed circuit board by zosko, from the zosko/NoahESC repository on GitHub. It is a 2-layer board of 32 × 43.7 mm with 50 parts on 48 nets, routed with 426 tracks and 113 vias.
It is built around the ATMEGA8A-AU, SIR158DP and 1N4148W, with the BC817 among its other parts. Its parts include 25 resistors, 9 transistors, 6 capacitors, 4 connectors and 3 diodes. It belongs with the robots and motor control boards and the AVR (ATmega, ATtiny) boards of this library.
The Atmega8-based Electronic Speed Controller (ESC) is a motor control device that uses the Atmega8 microcontroller as its main processing unit. It is designed to regulate the speed, direction, and braking of brushless DC (BLDC) motors or brushed motors, depending on the application. The Atmega8 handles the input signals—typically from a flight controller or receiver—and converts them into precise pulse-width modulation (PWM) outputs to control the motor’s performance. This type of ESC is widely used in drones, RC vehicles, and robotics projects due to its reliability, programmability, and compatibility with open-source firmware such as TGY. Overall, it provides an efficient and flexible solution for motor speed control in embedded and hobbyist applications.
| Board | PCB |
|---|---|
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Atmega8 must be flashed via ICSP microcontroller pins.
Arduino UNO as ISP programmer
avrdude -c stk500v1 -p m8 -P /dev/tty.usbmodem14401 -b 19200 -U flash:w:firmware.hex:iavrdude -c stk500v1 -p m8 -P /dev/tty.usbmodem14401 -b 19200 -U lfuse:w:0x3f:m -U hfuse:w:0xca:mUSBasp
avrdude -c usbasp -p m8 -U flash:w:firmware.hex:iavrdude -c usbasp -p m8 -U lfuse:w:0x3f:m -U hfuse:w:0xca:mDownload: Firmware
Huge thanks to PCBWay for sponsoring this project!
PCBWay is a leading provider of high-quality printed circuit boards (PCBs), offering reliable and affordable solutions for both hobbyists and professionals. Their services include rapid prototyping, PCB assembly, instant online quotations, expert design verification, and a streamlined ordering experience.
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| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R23, R26, R29, R31, R34 |
| 6 | 4.7K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R18, R19, R22, R25, R30 |
| 6 | 47K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R12, R13, R14, R15, R16 |
| 6 | SiR158DP | Package_SO:PowerPAK_SO-8_Single | Q1, Q2, Q3, Q4, Q5, Q10 |
| 4 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C11, C12, C13 |
| 3 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R27, R32 |
| 3 | 1N4148W | Diode_SMD:D_SOD-123 | D3, D4, D5 |
| 3 | 2.2K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24, R28, R33 |
| 3 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q7, Q8, Q9 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3 |
| 1 | 16Mhz | Crystal:Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | Y1 |
| 1 | 470K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | ATmega8A-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U1 |
| 1 | GND | TestPoint:TestPoint_Pad_3.0x3.0mm | J2 |
| 1 | PWM | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | Programming | Connector_PinHeader_1.27mm:PinHeader_1x06_P1.27mm_Vertical | J5 |
| 1 | TPS709 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | VBAT | TestPoint:TestPoint_Pad_3.0x3.0mm | J1 |
It measures 32 × 43.7 mm and has 2 copper layers, 1.6 mm thick.
50 parts, built around the ATMEGA8A-AU, SIR158DP, 1N4148W and BC817. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the zosko/NoahESC repository on GitHub, at the commit this page was made from: the board is hardware/hardware.kicad_pcb and its schematic hardware/hardware.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask zosko before reusing the design.
PCBench/PCBench
resolution = [0.5, 0.5] pcbfolder = '../PCBs/' pcbnames = ["1Bitsy1bitsy"] iters = 30 env = PCBRoutingEnv(resolution=resolution, pcbfolder=pcbfolder, pcbnames=pcbnames) obs, info = env.reset() for in range(iters): act =…
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