2 layers84.6 × 84.6 mm
4 layers70 × 89.2 mm
ETA Julkort
ETAChalmers/JulgranJulkort- Size
- 70 × 89.2 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 53
- Nets
- 61
- Pads
- 173
- Tracks, vias
- 371, 58
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 14 Dec 2022
- Updated
- 21 Dec 2022
Overview
ETA Julkort is an open-source printed circuit board by ETAChalmers, from the ETAChalmers/JulgranJulkort repository on GitHub. It is a 4-layer board of 70 × 89.2 mm with 53 parts on 61 nets, routed with 371 tracks and 58 vias.
It is built around the ATMEGA88A-AU, MAX4003EBL and IRLML2803TRPBF. Its parts include 17 resistors, 16 diodes, 12 capacitors, 3 ICs and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA88A-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 512Byte 8 Bit 8KB AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MAX4003EBL
UCSP-8(1.52x1.52)-45dBm~0dBm 100MHz~2.5GHz 2.7V~5V 5.9mA UCSP-8(1.52x1.52) RF DetectorsMaxim Integrated (Analog Devices)RF Detectors
IRLML2803TRPBF
SOT-23-55℃~+150℃ 1 N-channel 1.2A 250mΩ@10V 30V 400mV 540mW 5nC@10V 85pF N-Channel SOT-23 MOSFETs ROHSInfineon TechnologiesMOSFETs
README
README.mdX-mas tree card
NOT TESTED (2022-12-21)
This PCB is a supposed to become a Christmas card from E-sectionens Teletekniska Avdelning (ETA). It is a 2,4 GHz antenna in the shape of a Christmas tree. According to the Wifi strength the card is exposed to, different LED's should light up, so it is basically a fancy bar graph.
Parts
53| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 11 | 500 | Resistor_SMD:R_0603_1608Metric | R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20 |
| 3 | 0,1 uF | Capacitor_SMD:C_0603_1608Metric | C1, C4, C11 |
| 2 | 1 nF | Capacitor_SMD:C_0603_1608Metric | C9, C12 |
| 2 | 22p | Capacitor_SMD:C_0603_1608Metric | C5, C6 |
| 2 | 4,7 uF | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 2 | 5,1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 50 | Resistor_SMD:R_0603_1608Metric | R21, R22 |
| 1 | 0,01 uF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 100 pF | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 16MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | 28 nH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 30 | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | ATmega88 | Package_QFP:TQFP-32_7x7mm_P0.8mm | U1 |
| 1 | AVT-51663_PIB | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U2 |
| 1 | C | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | Conn_02x03_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x03_P2.54mm_Vertical | J2 |
| 1 | IRLML2803TR | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | MAX4003 | Package_SO:MSOP-8_3x3mm_P0.65mm | U3 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_JAE_DX07S016JA1R1500 | J1 |
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Questions
How big is the ETA Julkort PCB?
It measures 70 × 89.2 mm and has 4 copper layers, 4.69 mm thick.
What parts does the ETA Julkort use?
53 parts, built around the ATMEGA88A-AU, MAX4003EBL and IRLML2803TRPBF. 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 ETA Julkort KiCad files?
From the ETAChalmers/JulgranJulkort repository on GitHub, at the commit this page was made from: the board is ETA_Julkort.kicad_pcb and its schematic ETA_Julkort.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ETA Julkort design in my own project?
Its repository states no licence, so its author keeps all rights: ask ETAChalmers before reusing the design.