2 layers41 × 36 mm
Bed sensor
GaitRehabilitation/bed-sensor
This sensor is built around the open source schematic of the Ardunio Pro Mini and the seperate parts we're tested sepertly and the final board was printed from oshPark.
32 parts1
2 layers17.5 × 29.5 mm
Micro logger
GaitRehabilitation/mini_data_captureThe current maintainers of this repository are:
- Size
- 17.5 × 29.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 21
- Pads
- 150
- Tracks, vias
- 381, 34
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 30 Sep 2018
- Updated
- 6 Apr 2019
Overview
Micro logger is an open-source printed circuit board by GaitRehabilitation, from the GaitRehabilitation/mini_data_capture repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 17.5 × 29.5 mm with 33 parts on 21 nets, routed with 381 tracks and 34 vias.
It is built around the ATMEGA328-AU, DM3AT-SF-PEJM5 and ICM-20948, with the MIC5205-3.3YM5 and PCA9306D among its other parts. Its parts include 12 capacitors, 9 resistors, 5 ICs, 3 connectors and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATMEGA328-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
DM3AT-SF-PEJM5
SMD-25℃~+85℃ 1.68mm Connector and Ejector MicroSD Card (TF Card) No Push-Push SMD SD Card / Memory Card Connector ROHSHirose ElectricSD Card / Memory Card Connector
ICM-20948
QFN-24(3x3)-40℃~+85℃ 0.5KB 1.71V~3.6V 16bit 8uA Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24(3x3) Accelerometers ROHSTDK InvenSenseAccelerometers
MIC5205-3.3YM5
SOT-23-5-40℃~+85℃@(Ta) 1 150mA 200mV@(50mA) 20V 2uA 3.3V 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PCA9306D
SO-8-40℃~+105℃ 1 1.8V~5.5V 1V~3.6V 2 2Mbps Automatic direction detection、Output enable high-impedance Bidirectional Level translator Open-drain SMBus、I2C SO-8 Translators, Level Shifters ROHSNXP SemiconductorsTranslators, Level Shifters
README
README.mdMini Data Capture
Programming
avrdude -c <programmer> -p atmega328 -b 57600 -U flash:w:main.hex -U lfuse:w:0xff:m -U hfuse:w:0xd1:m -U efuse:w:0xff:m
Maintainers
The current maintainers of this repository are:
- Michael Pollind polli104@mail.chapman.edu
License
/**
* Copyright 2018 GaitRehabilitation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | .1uF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C11, C12 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric | R1, R2, R5, R6 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R3, R4, R9 |
| 2 | .1uf | Capacitor_SMD:C_0603_1608Metric | C8, C9 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C7 |
| 1 | 100pF | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 10uF | Capacitors_Tantalum_SMD:CP_Tantalum_Case-B_EIA-3528-21_Reflow | C3 |
| 1 | 10uF | Capacitors_Tantalum_SMD:CP_Tantalum_Case-T_EIA-3528-12_Reflow | C1 |
| 1 | 200K | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | ATMEGA328-AU | Package_QFP:TQFP-32_7x7mm_P0.8mm | U3 |
| 1 | Conn_01x02 | components:JSTPH2 | J4 |
| 1 | Crystal_GND2 | components:OSC_CSTCE8M00G55-R0 | Y1 |
| 1 | DM3AT-SF-PEJM5 | components:HRS_DM3AT-SF-PEJM5 | J5 |
| 1 | ICM-20948 | components:ICM-20948 | U4 |
| 1 | ISP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J3 |
| 1 | LD271 | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MIC5205-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | PCA9306 | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U5 |
| 1 | SW_Push | Buttons_Switches_SMD:SW_SPST_B3U-1000P | SW2 |
| 1 | TLV70218_SOT23-5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
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Questions
How big is the Micro logger PCB?
It measures 17.5 × 29.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Micro logger use?
33 parts, built around the ATMEGA328-AU, DM3AT-SF-PEJM5, ICM-20948 and MIC5205-3.3YM5. 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 Micro logger KiCad files?
From the GaitRehabilitation/mini_data_capture repository on GitHub, at the commit this page was made from: the board is hardware/micro_logger.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Micro logger design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).