4 layers81.2 × 81.2 mm
2 layers78.9 × 47 mm
Pocketscale
DevFluent/pocketscale- Size
- 78.9 × 47 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 28
- Pads
- 83
- Tracks, vias
- 171, 20
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 18 Jul 2017
- Updated
- 18 Jul 2017
Overview
Pocketscale is an open-source printed circuit board by DevFluent, from the DevFluent/pocketscale repository on GitHub. It is a 2-layer board of 78.9 × 47 mm with 27 parts on 28 nets, routed with 171 tracks and 20 vias.
It is built around the HX711 and MMBT4403. Its parts include 9 capacitors, 4 resistors, 3 ICs, 2 inductors and 1 transistor.
Main components
2
HX711
SOP-16-40℃~+85℃ 1.4mA 10Hz、80Hz 1MHz~20MHz、11.0592MHz 2 2.6V~5.5V 20mV、40mV、80mV 24 Built-in External、Built-in SPI Support Yes SOP-16 Analog to Digital Converters (ADC) ROHSAvia SemiconAnalog To Digital Converters (ADC)
MMBT4403
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200MHz 300mW 400mV 40V 5V 600mA PNP SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
README
README.mdpocketscale
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | idlehands_footprints:C_0402_Hand | C1, C2, C4, C6, C7 |
| 3 | 10uF | idlehands_footprints:c_1206 | C3, C5, C9 |
| 2 | 100R | idlehands_footprints:R_0402_Hand | R3, R4 |
| 1 | 10uH | Inductors:Inductor_1212 | L2 |
| 1 | 1uF | idlehands_footprints:C_0402_Hand | C8 |
| 1 | 20k | idlehands_footprints:R_0402_Hand | R1 |
| 1 | 3.3uH | idlehands_footprints:C_SM0603 | L1 |
| 1 | 500mA | idlehands_footprints:c_1206 | F1 |
| 1 | 8.2k | idlehands_footprints:R_0402_Hand | R2 |
| 1 | Battery | Pin_Headers:Pin_Header_Angled_1x02 | BT1 |
| 1 | HX711 | idlehands_footprints:SOP16L | U2 |
| 1 | HX_PWR | Pin_Headers:Pin_Header_Straight_1x02 | JP1 |
| 1 | JST-SH6 | Connectors_JST_SH:Connectors_JST_SM06B-SRSS-TB | P1 |
| 1 | LOGO | idlehands_footprints:Logo_DF | G*** |
| 1 | LTC3525 | idlehands_footprints:SC70-6 | U3 |
| 1 | LightBlueBean | idlehands_footprints:LightBlueBean | U1 |
| 1 | MMBT4403 | idlehands_footprints:SOT23 | Q1 |
The 24 most common of 27 parts.
Questions
How big is the Pocketscale PCB?
It measures 78.9 × 47 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pocketscale use?
27 parts, built around the HX711 and MMBT4403. 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 Pocketscale KiCad files?
From the DevFluent/pocketscale repository on GitHub, at the commit this page was made from: the board is hardware/pocketscale.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pocketscale design in my own project?
Its repository states no licence, so its author keeps all rights: ask DevFluent before reusing the design.
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