Platform for creating and sharing projects - OSHWLab
Activity
More
We invite all electronics enthusiasts to participate in the eventand share your open-source hardware designs. We can cover all the manufacturing fees with the following services: Free PCB/SMT/3D/CNC/MC/Multi-color silkscreen.
OSHWLab Stars
2023-01-01 ~ 2025-12-31in progress

Make Your Own Christmas Gift! 🎁Join · Design · Share · Celebrate🎁 Click to [Get the coupon]
🎄 Christmas Hackathon 2025 🎅
2025-11-12 ~ 2026-01-04in progress

Open to all college and high school students majoring in electronics or enthusiasts. Preference will be given to individuals with experience in campus activities, community building, and student leadership roles.
Campus Ambassador
2024-01-01 ~ 2026-12-31in progress
Collections
More

309 project in total
Enter the Collection >
32 project in total
Enter the Collection >

Videos
MoreForums
MoreProject
SIM800C correct schematic
Latest Reply:
4 days agoI did noticed that you have some net labels hanging in the air. They are not connected to the wire itself. Otherwise, I don't see any problem. I just wondering about the value of R3? Usually this is an inductor, not a high value resistor. You may not get any signal through that resistor...
Regards,
Markus Virtanen
HW / Electronics Designer[Picture]
Schematic
Difference between data sheet and schematic symbol
Latest Reply:
3 days agoHello, we have already checked this device and there is no problem.[Picture]
Schematic
Charge/Power Circuit
Latest Reply:
4 days agoGo through my published projects. There should be several Li-ion charging projects with complete PCB layouts.
Regards,
Markus Virtanen
HW / Electronics Designer
Schematic
PCB Design review
Latest Reply:
19 hours agoFrom the layout:
1. You don't seem to have enough ground stitching via connecting top copper to bottom copper ground.
2. You shouldn't enter or exit from pad in 45 degree angle. The track should always leave or enter in 90degree angles.
3. Buttons mounting holes can be grounded.
4. You seem to have peculiar method to block ground plane entering to adjacent areas. Lets take a left side LED in example. You have a long trace leaving on the right side pad and ending the trace with via right next to a resistor pad, thus blocking the top ground copper entering straight to the modules ground pad. Same thing in the audio connector. You have the right capacitor which is almost blocking the ground to flow between the caps.
5. One important thing is that you should never flood top and bottom copper underneath the Bluetooth antenna. That area needs to be left without ground copper area.
Featured Articles
More
ActivityMaterials application instructions
Introduction: Only support "OSHWLab Stars" projects.
The order amount cannot exceed $5,000
TechniqueRoll the Future: Create Smart Timer Dice
Introduction: Welcome to OSHWLab Weekly: Create, Innovate, Explore. Discover projects and master EasyEDA!
TechniqueOrdering Boards for OSHWLab Projects
Introduction: Are you new to this hobby, do you want to replicate a community project? Here's the easy way



























