
Dif pressure meter
ardiloot/dif-pressure-meter
ESP32 based differential pressure (and air flow) meter. Handheld, battery powered DIY device for measuring small pressure differences (Sensirion SDP810-500Pa).

IoT and Access Controller Projects
OE0113-WiFi QR Mifare Reader V1.1 is an open-source printed circuit board by buraky36, from the buraky36/Barfas_Projects repository on GitHub. It is a 2-layer board of 34.9 × 86 mm with 90 parts on 85 nets, routed with 582 tracks and 149 vias.
It is built around the ESP-12F, BC817 and 1N5819HW-7-F-01, with the P6SMB20A among its other parts. Its parts include 28 resistors, 26 capacitors, 17 connectors, 5 ICs and 5 diodes. It belongs with the radio and wireless boards and the ESP8266 boards of this library.
IoT and Access Controller Projects
| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | Conn_01x01 | OE0113-WiFi_QR_Mifare_Reader:1x01 | J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J15, J16 |
| 6 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R8, R11, R14, R17, R26 |
| 5 | 100K | Resistor_SMD:R_0603_1608Metric | R16, R18, R19, R20, R21 |
| 5 | 12K | Resistor_SMD:R_0603_1608Metric | R4, R5, R6, R10, R27 |
| 4 | 15pF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C7, C14 |
| 3 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C6 |
| 3 | 100nF/50V | Capacitor_SMD:C_0603_1608Metric | C1, C17, C25 |
| 3 | 22uF/10V | Capacitor_SMD:C_0805_2012Metric | C22, C23, C24 |
| 2 | 0R | Resistor_SMD:R_0603_1608Metric | R13, R28 |
| 2 | 100nF/50V | Capacitor_SMD:C_0805_2012Metric | C20, C21 |
| 2 | 10pF | Capacitor_SMD:C_0603_1608Metric | C10, C13 |
| 2 | 10uF/25V | Capacitor_SMD:C_0805_2012Metric | C18, C19 |
| 2 | 180pF | Capacitor_SMD:C_0603_1608Metric | C9, C12 |
| 2 | 2.2uh | Inductor_SMD:L_0805_2012Metric | L1, L2 |
| 2 | 2M | Resistor_SMD:R_0603_1608Metric | R22, R23 |
| 2 | 47pF | Capacitor_SMD:C_0603_1608Metric | C8, C11 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R3, R12 |
| 2 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | Jumper_3_Bridged12 | Connector_PinHeader_2.00mm:PinHeader_1x03_P2.00mm_Vertical_SMD_Pin1Left | JP1, JP2 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D1, D3 |
| 1 | 1N4001 | Diode_SMD:D_SMA | D2 |
| 1 | 1N5819HW-7-F | Diode_SMD:D_SOD-123 | D6 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C16 |
| 1 | 1uF | Capacitor_SMD:CP_Elec_4x5.3 | C15 |
| 1 | 1uF/50V | Capacitor_SMD:C_0603_1608Metric | C26 |
| 1 | 20K | Resistor_SMD:R_0603_1608Metric | R25 |
| 1 | 27.12MHz | OE0113-WiFi_QR_Mifare_Reader:SMD3225-4P | Y1 |
| 1 | 3.3uH | Inductor_SMD:L_Vishay_IHLP-2020 | L3 |
| 1 | 33.2K | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 510K | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 820 | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | Conn_01x06 | SparkFun-Connector:1x06 | J18 |
| 1 | Conn_01x06 | Connector_Hirose:Hirose_DF3EA-06P-2H_1x06-1MP_P2.00mm_Horizontal | J1 |
| 1 | ESP-12F | OE0113-WiFi_QR_Mifare_Reader:ESP-12F | U4 |
| 1 | G5V-2 | Relay_THT:Relay_DPDT_Omron_G5V-2 | K2 |
| 1 | MFRC52201HN1,151 | Package_DFN_QFN:VQFN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm_ThermalVias | U1 |
| 1 | P6SMB20A | Diode_SMD:D_SMB | D5 |
| 1 | TPS562201DDCR | OE0113-WiFi_QR_Mifare_Reader:SOT95P280X110-6N | U2 |
| 1 | TSM12M | OE0113-WiFi_QR_Mifare_Reader:QFN_32_5X5 | U5 |
| 1 | XR1300 | OE0113-WiFi_QR_Mifare_Reader:XR1300_QR_READER | U3 |

ardiloot/dif-pressure-meter
ESP32 based differential pressure (and air flow) meter. Handheld, battery powered DIY device for measuring small pressure differences (Sensirion SDP810-500Pa).





justinjchae/poko
Poko: a phone-free MagSafe companion. nRF52840 + Zephyr, round display, haptic ring, voice memos, iPhone app, parametric CAD, KiCad.


It measures 34.9 × 86 mm and has 2 copper layers, 1.6 mm thick.
90 parts, built around the ESP-12F, BC817, 1N5819HW-7-F-01 and P6SMB20A. 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.
From the buraky36/Barfas_Projects repository on GitHub, at the commit this page was made from: the board is myProjects/1_Access_Control_Terminal/Hardware/OE0113-WiFi_QR_Mifare_Reader_burak/V1.1/OE0113-WiFi_QR_Mifare_Reader_V1.1.kicad_pcb and its schematic myProjects/1_Access_Control_Terminal/Hardware/OE0110_Qr_Touch/OE0110_Qr_Touch/BUZZER.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask buraky36 before reusing the design.