2 layers31.2 × 53.3 mm
Nanit
andykarpov/nanit
Alternate PCB for NANIT project https://radiokot.ru/circuit/digital/measure/117/
72 parts7
2 layers31.2 × 53.3 mm
Nanit
andykarpov/nanit7Alternate PCB for NANIT project https://radiokot.ru/circuit/digital/measure/117/
- Size
- 31.2 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 73
- Nets
- 59
- Pads
- 251
- Tracks, vias
- 450, 105
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20210824)
- Created
- 7 Feb 2020
- Updated
- 22 Aug 2022
Overview
Nanit is an open-source printed circuit board by andykarpov, from the andykarpov/nanit repository on GitHub. It is a 2-layer board of 31.2 × 53.3 mm with 73 parts on 59 nets, routed with 450 tracks and 105 vias.
It is built around the ATMEGA328-PU, CH340G and LTC4054ES5-4.2#PBF, with the US1M, BC847 and BC857 among its other parts. Its parts include 26 capacitors, 19 resistors, 6 diodes, 3 ICs and 3 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
7
ATMEGA328-PU
PDIP-28-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
CH340G
SOP-16-40℃~+85℃ 2Mbps 3.3V、5V USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
LTC4054ES5-4.2#PBF
SOT-23-5-40℃~+85℃ 1 200uA 4.25V~6.5V 4.2V 800mA Charging IC Lithium Battery Not supported Not supported SOT-23-5 Battery Management ROHSAnalog DevicesBattery Management
US1M
SMA-55℃~+150℃ 1 Independent 1.65V@1A 1A 1kV 30A 5uA@1kV 75ns SMA Fast Recovery / High Efficiency Diodes ROHSMDDFast Recovery / High Efficiency Diodes
BC847
SOT-231 NPN 100MHz 100mA 100nA 110 200mW 45V 500mV 6V NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)BC857
SOT-231 PNP 100MHz 100mA 15nA 200mW 45V 5V 650mV 800 PNP SOT-23 Bipolar (BJT) ROHSSTMicroelectronicsBipolar (BJT)IRLML6344
SOT-23-55℃~+150℃ 1 N-channel 1.1V 1.3W 29mΩ@4.5V 30V 46pF 5A 6.8nC@4.5V 650pF SOT-23 MOSFETs ROHSGuangdong HottechMOSFETs
README
README.mdAlternative PCB for NANIT radiation counter.
The original article: https://radiokot.ru/circuit/digital/measure/117/
Changes to the original schematics:
- Added factory manufactured SMD transformer instead of hand-made coil
- Added LED driver for display backlight
PCB renders:
OSHPark project link:
Parts
73| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C4, C6, C7, C8, C10, C17, C18, C19 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7, R8, R11, R12, R13, R14 |
| 4 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R16, R18, R19, R20 |
| 4 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C20, C21, C22, C23 |
| 3 | 100nF 600V | Capacitor_SMD:C_1812_4532Metric_Pad1.30x3.40mm_HandSolder | C13, C14, C15 |
| 3 | US1M | Diode_SMD:D_SMA | D5, D6, D7 |
| 2 | 10uH | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1, L2 |
| 2 | 22pF* | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5, C11 |
| 2 | 2M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R21, R22 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C24*1, C25 |
| 1 | 10k* | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 1 | 10pF 1000V (C17UL100J-7ZN-X1T) | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C9 |
| 1 | 10uF | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C3 |
| 1 | 12 MHz | Crystal:Crystal_HC49-U_Vertical | Y2 |
| 1 | 18v (BZV55C18) | Diode_SMD:D_MiniMELF | D8 |
| 1 | 1N4148 | Diode_SMD:D_MiniMELF | D4 |
| 1 | 1k5 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R10 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2 |
| 1 | 20 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R17 |
| 1 | 220pF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C12 |
| 1 | 2u2 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C26 |
| 1 | 3.7V | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | 300 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | 32.768 KHz | Crystal:Crystal_C38-LF_D3.0mm_L8.0mm_Horizontal | Y1 |
| 1 | 390..910k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4*1 |
| 1 | 47uF | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C16 |
| 1 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3*1 |
| 1 | 750 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R15 |
| 1 | ATmega328P | Package_QFP:TQFP-32_7x7mm_P0.8mm | U2 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical_SMD | J2 |
| 1 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q4 |
| 1 | BC857 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Button 1 | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | Button 2 | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | Buzzer | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BZ1 |
| 1 | CEEH54 | Sensors_Radiation:CEEH54 | TR1 |
| 1 | CH340G | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | Charging | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | IRLML6344 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | LTC4054ES5-4.2 | Package_TO_SOT_SMD:TSOT-23-5 | U1 |
| 1 | SBM-10 (SBM-21) | Sensors_Radiation:SBM-21 | S1 |
| 1 | SSD1306 OLED 128x64 0.96" | ribbon_connectors:SSD1306_ribbon | P1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP2 |
| 1 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_Pad1.0x1.5mm | JP3 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Amphenol_10118194_Horizontal | J1 |
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Questions
How big is the Nanit PCB?
It measures 31.2 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Nanit use?
73 parts, built around the ATMEGA328-PU, CH340G, LTC4054ES5-4.2#PBF and US1M. 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 Nanit KiCad files?
From the andykarpov/nanit repository on GitHub, at the commit this page was made from: the board is pcb/revC/nanit.kicad_pcb and its schematic pcb/revC/nanit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nanit design in my own project?
Its repository states no licence, so its author keeps all rights: ask andykarpov before reusing the design.