
Sdmux4
hnz1102/sdcdmux-emmc
SD CARD and eMMC Device Multiplexer with Infrared Remote Controller

4ch load cell logger board using Raspberry Pi Pico and HX711. (Wakame Edition)
LoadCell Logger is an open-source printed circuit board by yosihisa, from the yosihisa/LoadCell-Logger repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 60 mm with 68 parts on 84 nets, routed with 423 tracks and 63 vias.
It is built around the HX711, TC74HCU04AFT(EL) and MMBT3906, with the BLM18RK102SN1 among its other parts. Its parts include 22 capacitors, 22 resistors, 6 ICs, 5 connectors and 4 diodes. It belongs with the sensors and measurement boards and the RP2040 boards of this library.
4ch load cell logger board using Raspberry Pi Pico and HX711. (Wakame Edition)
HX711とRaspberry Pi Picoを使用した4チャンネルロードセルロガーです。
Arduino公式のライブラリではマルチコアを使えないためこちら使用する。
ArduinoIDEの「ファイル」>「環境設定」から「追加のボードマネージャのURL」を開き以下のURLを追加する。
https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
ArduinoIDEの「ツール」> 「ボード」> 「ボードマネージャ」から Raspberry Pi Pico/RP2040 をインストールする。
ArduinoIDEから次のボードを設定する。
ボード > Raspberry Pi RP2040 Boards > Raspberry Pi Pico
コンパイルオプションは標準のままでよい。
(Flash Size :2MB(noFS) , CPU Speed :125MHz , 各種デバッグ: 無効 , USB Stack: Pico SDK)
ソフト
ハード
| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C5, C7, C8, C10, C12, C13, C15, C17, C18, C20, C22 |
| 8 | 100 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6, R9, R10, R13, R14, R17, R18 |
| 8 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C6, C9, C11, C14, C16, C19, C21 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R8, R12, R16 |
| 4 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19, R20, R21, R22 |
| 4 | 22k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R7, R11, R15 |
| 4 | HX711 | Package_SO:SOP-16_3.9x9.9mm_P1.27mm | U3, U4, U5, U6 |
| 4 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D2, D3, D4 |
| 4 | LoadCell | Connector_Molex:Molex_SPOX_5268-04A_1x04_P2.50mm_Horizontal | CN1, CN2, CN3, CN4 |
| 4 | MMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 2 | 10p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 1 | 13.824MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 300 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | A | user:SKRPACE010_kai | SW1 |
| 1 | B | user:SKRPACE010_kai | SW2 |
| 1 | BLM18RK102 | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | Debug | user:STlink | J1 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | U1 |
| 1 | Reset | user:SKRPACE010_kai | SW3 |
| 1 | TC74HCU04AF | Package_SO:SO-14_5.3x10.2mm_P1.27mm | U2 |
It measures 100 × 60 mm and has 2 copper layers, 1.6 mm thick.
68 parts, built around the HX711, TC74HCU04AFT(EL), MMBT3906 and BLM18RK102SN1. 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 yosihisa/LoadCell-Logger repository on GitHub, at the commit this page was made from: the board is PCB/LoadCell-Logger.kicad_pcb and its schematic PCB/LoadCell-Logger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

hnz1102/sdcdmux-emmc
SD CARD and eMMC Device Multiplexer with Infrared Remote Controller


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