4 layers99.1 × 83.8 mm
Ibm-5151-pcb
asinghani/ibm-5151-controller
Building a VT100 emulator out of an IBM 5151 monitor and an FPGA
85 partsMIT
4 layers48.3 × 57.7 mm
Sensor node v1
asinghani/rp2040_aprs_sensor_node2RP2040-based sensor node PCB that communicates on the APRS (Automatic Packet Reporting System) network
- Size
- 48.3 × 57.7 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 69
- Pads
- 299
- Tracks, vias
- 586, 181
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 22 Apr 2022
- Updated
- 30 Apr 2022
Overview
Sensor node v1 is an open-source printed circuit board by asinghani, from the asinghani/rp2040_aprs_sensor_node repository on GitHub. It is a 4-layer board of 48.3 × 57.7 mm with 57 parts on 69 nets, routed with 586 tracks and 181 vias.
It is built around the RP2040, W25Q128JVSIQ and ECS-120-20-3X-TR. Its parts include 20 capacitors, 13 resistors, 6 connectors, 4 ICs and 2 diodes. It belongs with the home automation and IoT and sensors and measurement boards and the RP2040 boards of this library.
Main components
3
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
ECS-120-20-3X-TR
HC-49S-SMD-Mini-10℃~+70℃ 12MHz 20pF 60Ω ±30ppm ±50ppm HC-49S-SMD-Mini Crystals ROHSECSCrystals
README
README.mdRP2040 APRS Sensor Node
Cheap, low-power embedded sensor-node powered by an RP2040 microcontroller that communicates over the APRS (Automatic Packet Reporting System) network using the VHF Amateur Radio band.
Features
- RP2040 microcontroller + flash memory
- Ability to run MicroPython
- USB-C for power and programming
- JST connector for connecting to LiPo batteries
- 3V3 regulator to power microcontroller (and optionally radio)
- DRA818 VHF 1W/0.5W transceiver
- Passive bandpass filter converts PWM output to sine-wave for transmission
- SMA antenna connector (can use a rubber-ducky style HT antenna or an SMA cable to connect to a later antenna)
- Reset & reflash buttons, power & user LEDs
- Power-source jumpers
- 3V3 regulator can be powered by USB or JST
- Radio transceiver can be powered directly by JST or thru 3V3 regulator
Photos
Example Code
The directory firmware includes example code which reads from a TMP102 temperature sensor and transmits over the APRS network. The pinout for the sensor is defined in firmware/src/tmp102.c.
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C13, C14, C16, C17, C18, C20 |
| 4 | 1u | Capacitor_SMD:C_0603_1608Metric | C2, C4, C15, C19 |
| 4 | 5k1 | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R8 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 2 | 10n | Capacitor_SMD:C_0603_1608Metric | C8, C9 |
| 2 | 1K | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R3, R11 |
| 2 | 27R | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | 27p | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | 5K1 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | Debug | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J6, J8 |
| 1 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 10k, DNF | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 22u | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | AZ1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | Antenna | Connector_Coaxial:SMA_Molex_73251-2120_EdgeMount_Horizontal | J3 |
| 1 | Boot Button | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J5 |
| 1 | DRA818V | DRA818V:DORJI_DRA818V | U1 |
| 1 | ECS-120-20-3X-TR | ECS-120-20-3X-TR:XTAL_ECS-120-20-3X-TR | Y1 |
| 1 | GPIO Header | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J1 |
| 1 | PWRLED | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | Power Level | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP3 |
| 1 | RP2040 | RP2040:RP2040-QFN-56 | U4 |
| 1 | RX_JMP | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1 |
| 1 | Radio Power | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP5 |
| 1 | Reset | Button_Switch_SMD:SW_SPST_PTS810 | SW2 |
| 1 | System Power | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP4 |
| 1 | TX_JMP | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP2 |
| 1 | USB_USER | USB_C_Receptacle_HRO_TYPE-C-31-M-12:USB_C_HRO-31-M-12_nofront | J2 |
| 1 | USERLED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U3 |
Questions
How big is the Sensor node v1 PCB?
It measures 48.3 × 57.7 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Sensor node v1 use?
57 parts, built around the RP2040, W25Q128JVSIQ and ECS-120-20-3X-TR. 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 Sensor node v1 KiCad files?
From the asinghani/rp2040_aprs_sensor_node repository on GitHub, at the commit this page was made from: the board is node_pcb_v1/sensor_node_v1.kicad_pcb and its schematic node_pcb_v1/sensor_node_v1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sensor node v1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask asinghani before reusing the design.
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