

Esion-4aa
C++
- Size
- 59.7 × 79 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 41
- Nets
- 50
- Pads
- 153
- Tracks, vias
- 397, 73
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 19 Nov 2018
- Updated
- 4 Jan 2023
Overview
Esion-4aa is an open-source printed circuit board by RVelichko, from the RVelichko/Esion repository on GitHub. It is a 2-layer board of 59.7 × 79 mm with 41 parts on 50 nets, routed with 397 tracks and 73 vias.
It is built around the ATTINY84-20SSU, ESP32-WROOM-32 and LM1117-3.3, with the BSS138, BSS192P and MBR120 among its other parts. Its parts include 18 resistors, 5 capacitors, 3 ICs, 2 transistors and 1 diode. It belongs with the ESP32 and AVR (ATmega, ATtiny) boards of this library.
Main components
6ATTINY84-20SSU
SOIC-14-40℃~+85℃ 10bit 12 2.7V~5.5V 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi ModulesLM1117-3.3
SOT-2231 1.3V@(1000mA) 15V 1A 2mA 3.3V Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorisedBSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsBSS192P
SOT-89-3MOSFETsTECH PUBLICMBR120
SOD-123Schottky DiodesDoeshare
README
README.mdСерис обслуживания устройств
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10K | Resistor_SMD:R_0805_2012Metric | R2, R3, R11, R12, R13, R14, R15, R16, R17, R18, R19 |
| 3 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C3, C5 |
| 3 | 20K | Resistor_SMD:R_0805_2012Metric | R7, R9, R10 |
| 3 | 220 | Resistor_SMD:R_0805_2012Metric | R5, R6, R20 |
| 2 | Battery | Battery:BattaryHolder-blm-smt-2aa | BT1, BT2 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4 |
| 1 | 10uF/10V | Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B | C1 |
| 1 | ATtiny84-20SSU | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BSS192P | SOT89R_INFINEON_bss192:SOT89R_INFINEON | Q2 |
| 1 | Blue | LED_SMD:LED_0805_2012Metric | Blue |
| 1 | Configure | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | Configure |
| 1 | Connector 1 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type059_RT06302HBWC_1x02_P3.50mm_Horizontal | Con.1 |
| 1 | Connector 2 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type059_RT06302HBWC_1x02_P3.50mm_Horizontal | Con.2 |
| 1 | Connector 3 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type059_RT06302HBWC_1x02_P3.50mm_Horizontal | Con.3 |
| 1 | Connector 4 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type059_RT06302HBWC_1x02_P3.50mm_Horizontal | Con.4 |
| 1 | ESP Flash | Connector_JST:JST_XH_B06B-XH-A_1x06_P2.50mm_Vertical | Flash port |
| 1 | ESP32-WROOM | ESP32-footprints-Lib:ESP32-WROOM | U2 |
| 1 | LM1117-3.3 | Package_TO_SOT_SMD:SOT-223 | U1 |
| 1 | MBR120 | Diode_SMD:D_SOD-123 | D3 |
| 1 | POWER | Button_Switch_SMD:SW_SPDT_PCM12 | SW4 |
| 1 | Red | LED_SMD:LED_0805_2012Metric | Red |
| 1 | Reset | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | Reset |
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Questions
How big is the Esion-4aa PCB?
It measures 59.7 × 79 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Esion-4aa use?
41 parts, built around the ATTINY84-20SSU, ESP32-WROOM-32, LM1117-3.3 and BSS138. 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 Esion-4aa KiCad files?
From the RVelichko/Esion repository on GitHub, at the commit this page was made from: the board is kicad/esion-4aa.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esion-4aa design in my own project?
Its repository states no licence, so its author keeps all rights: ask RVelichko before reusing the design.