
HackaBLE
electronut/ElectronutLabs-hackaBLE
A tiny Nordic nRF52832 based board you can embed in your BLE projects.

A ring-sized watch
Display is an open-source printed circuit board by rmd6502, from the rmd6502/ringwatch repository on GitHub, published under the Unlicense licence. It is a 2-layer board of 18.8 × 27.9 mm with 16 parts on 58 nets, routed with 185 tracks and 24 vias.
It is built around the MDBT42Q and DS3231MZ/V+. Its parts include 8 resistors, 3 ICs, 3 connectors, 1 capacitor and 1 switch. It belongs with the lEDs and displays boards and the nRF52 and nRF5x boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 220 | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 1 | .1µ | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | AS5601 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.35x2.35mm | U2 |
| 1 | Conn_01x02_Female | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn_01x05_Female | Connector_PinHeader_1.00mm:PinHeader_1x05_P1.00mm_Vertical | J2 |
| 1 | Conn_02x06_Counter_Clockwise | Package_DIP:DIP-12_W7.62mm_SMDSocket_SmallPads | J1 |
| 1 | DS3231MZ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | MDBT42Q | MDBT42Q:MDBT42Q | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3S-1000 | SW1 |
It measures 18.8 × 27.9 mm and has 2 copper layers, 0.8 mm thick.
16 parts, built around the MDBT42Q and DS3231MZ/V+. 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 rmd6502/ringwatch repository on GitHub, at the commit this page was made from: the board is hardware/display.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the Unlicense licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

electronut/ElectronutLabs-hackaBLE
A tiny Nordic nRF52832 based board you can embed in your BLE projects.

IoTReady/low-power-nrf52-weighing-scale
https://iotready.co/low-power-nrf52-weighing-scale/



sckim/KiCAD
휘트스톤 브리지(Wheatstone Bridge)는 저항 4개로 두 개의 분압기를 만들고, 두 중간점의 전압 차이로 저항의 균형 여부를 판단하는 회로이다. 이 예제에서는 예제 1의 흐름(회로도 → PCB)에 더해 KiCad에 내장된 SPICE 시뮬레이터(ngspice) 로 회로를 먼저 계산해 보는 방법을 익힌다.

shraken/mdbt42q_bobby
A MDBT42Q break-out board for Nordic nRF52832 chip family

Appiko/sense_snap_hw
This repository contains all the KiCad based PCB design and related documentation for all the PCBs developed at Appiko.
