Touch screen development board

PDF_Touchscreen Development Board.zip

Altium Touchscreen Development Board.zip

PADS Touchscreen Development Board.zip

BOM_Touchscreen Development Board.xlsx

92657

Voltmeter and Ammeter

A complete beginner is building an ammeter and voltmeter using LCSC Geosystems.

Tools
: 1. Software: Keil 5 MDK, STLINK V2 driver;
2. Multimeter, soldering tools, STLINK
hardware design

schematic.

Here are some pitfalls I encountered:
1. Blue network labels are not text; network labels can be implemented using fan-out.
2. Unconnected ports must be marked with a "non-connection" identifier.
3. Pay attention to component reference numbers and names.
4. Components can be found in the "Placement" section and the library below. There's also a column for common components on the left for quick placement. If you're a beginner or don't want to use surface mount components, it's best to follow the BOM for basic components like resistors and capacitors. In this case, all my components except U1 were through-hole.

PCB

Notes:
1. The PCB size should ideally be 10cm x 10cm. Drawing it larger makes routing easier. Make sure you have components with fixed lengths, like the ground-based board in the example; don't assume anything.
2. After importing the schematic, lay out the components first, then route them. Refer to the BOM (Bill of Materials) when routing, as components with similar properties may fit together perfectly.
3. When routing, use all red or blue for complex areas to facilitate other traces passing through.
4. While pads can be used to switch between top and bottom layers, some components must be routed from the top layer. Be careful.
5. Add teardrops first, then copper pour, and then add some small pads.
6. This time, partial copper pour was chosen. The official design looks beautiful, but it's actually a polygonal copper pour, with the bottom layer copper poured on top of each pad. Several areas requiring copper pour are for high current flow.
7. Some additional points: Consecutive pads can be elongated into a circle for easier soldering; pads with close spacing can be separated using silkscreen; additional silkscreen can be added as reminders.

The 3D enclosure

must have a large distance between it and the PCB board!!! Otherwise, it won't fit!!! (Heartbreaking!)

BOM_Board1_Schematic1_2024-08-12 (1).xlsx

Gerber_PCB1_2024-08-26.zip

3DShell_PCB1.zip

PDF_Voltage and Current Meters.zip

Altium_voltmeter_currentmeter.zip

PADS_Voltage and Current Meter.zip

BOM_Voltage and Current Meter.xlsx

92658

electronic