6 layers99.7 × 63.9 mm
Nescart
Keitark/fc-rom-vomitter
Wi-Fi NROM development cartridge for Famicom: ESP32-S3, SRAM, KiCad, firmware, fabrication evidence, and an experimental NES variant.
84 partsMIT
2 layers
Attiny13ServoTester
matrn/Attiny13ServoTester4Servo tester for Attiny 13.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 13
- Pads
- 48
- Tracks, vias
- 112, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 21 Jan 2019
- Updated
- 18 Aug 2019
Overview
Attiny13ServoTester is an open-source printed circuit board by matrn, from the matrn/Attiny13ServoTester repository on GitHub, published under the MIT licence. It is a 2-layer board with 18 parts on 13 nets, routed with 112 tracks and 0 vias.
It is built around the ATTINY13A-SSU and AMS1117-3.3. Its parts include 7 connectors, 3 resistors, 2 capacitors, 2 ICs and 2 diodes. It belongs with the robots and motor control boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATTINY13A-SSU
SOIC-8-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 6 64Byte 64Byte 8 Bit AVR Built-in FLASH SOIC-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdAttiny13 Servo Tester
Servo tester using cheap attiny13.
Code
Code is written in arduino language. Use Arduino IDE to Attiny13ServoTester.ino into your MCU.
Schematic & PCB
Schematic and PCB are created using kicad. All files necessary for kicad are stored in kicad directory.
Modes
Tester has multiple modes:
- Potentiometer mode - servo position is controlled by potentiometer and leds
LED_MINandLED_MAXlight up when minimal or maximal position is reached. - Auto mode - servo tester sets up position automatically from 0° to 180° and from 180° to 0°.
- 90° mode - position is whole time at 90°
Arduino IDE settings
- Board: ATtiny13
- Brown-out Detection Level: "1.8V"
- Link Time Optimalisation: "LTO Enabled"
- Processor Version: "ATtiny13"
- Processor Speed: "9.6MHz Internal Oscillator"
- Programmer: "Arduino as ISP"
Additional notes
- Because servo can create current impact it's better to add electrolytic and ceramic capacitor paraller to power.
- It's necessary to mirror SMD components on kicad PCB because PCB also contains THT components.
ToDo
- mirror SMD elements
- add resistor for servo
- complete all modes
- add mode change led signalisation
- cleanup code
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R2, R3 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2 |
| 2 | SERVO | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2, J3 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | ATtiny13A-SSU | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | LED_MAX | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LED_MIN | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | POWER | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | PROG_MISO | Connector_Pin:Pin_D0.7mm_L6.5mm_W1.8mm_FlatFork | J7 |
| 1 | PROG_MOSI | Connector_Pin:Pin_D0.7mm_L6.5mm_W1.8mm_FlatFork | J5 |
| 1 | PROG_RESET | Connector_Pin:Pin_D0.7mm_L6.5mm_W1.8mm_FlatFork | J6 |
| 1 | PROG_SCK | Connector_Pin:Pin_D0.7mm_L6.5mm_W1.8mm_FlatFork | J4 |
| 1 | R_POT | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
Questions
What parts does the Attiny13ServoTester use?
18 parts, built around the ATTINY13A-SSU and AMS1117-3.3. 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.
Where can I download the Attiny13ServoTester KiCad files?
From the matrn/Attiny13ServoTester repository on GitHub, at the commit this page was made from: the board is kicad/Attiny13ServoTester.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Attiny13ServoTester design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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