#pcbassembly — ELECROW - FORUM https://forum.elecrow.com/index.php?p=/ Tue, 21 Apr 2026 22:35:45 +0000 en #pcbassembly — ELECROW - FORUM 🎉 Elecrow: Free LoRa Modules + PCB Assembly Sponsorship + AI & Open Hardware Contest 🤖📡💰 https://forum.elecrow.com/index.php?p=/discussion/1205/elecrow-free-lora-modules-pcb-assembly-sponsorship-ai-open-hardware-contest-%F0%9F%A4%96 Mon, 21 Apr 2025 08:01:58 +0000 Discussion Erin 1205@/index.php?p=/discussions 🎉 Hey makers, here’s your chance to get free stuff, get your projects built, and even win cash prizes!
💡If you’ve got an IoT or hardware project that you’ve been dreaming about, Elecrow has some exciting offers you don’t want to miss. Whether you're just starting out or looking to take your idea to the next level, this could be your big opportunity. Here’s what’s going on:

📦 1. Free LoRa Modules? Yes, please!
Ever wanted to play with LoRa technology? Now’s your chance to get free LoRa modules to experiment with long-range, low-power communication systems.
These modules are perfect for smart agriculture, environment monitoring, or just exploring new ways to connect devices over long distances.

⚙️ 2. Free PCB Assembly Sponsorship!
Got your design ready but don’t want to pay for PCB manufacturing? Elecrow is offering free PCB assembly services if you’ve got a project and a BOM (Bill of Materials).
No more stressing over prototyping costs—get your boards assembled for free and bring your ideas to life quicker!

🎯 3. AI & Open Hardware Contest - Show Off Your Project & Win!
This isn’t just about free stuff—Elecrow is also running an AI & Open Hardware Contest.
It’s a fantastic opportunity to:

  • Show off your project to the global maker community
  • Win cash prizes 💰 (who doesn’t love that?)
  • Get more exposure on Elecrow’s website and social media! 🌍

If your project involves AI or open hardware (think: LoRa, Raspberry Pi, ESP32, etc.), this is the perfect contest for you.

🔗 Get the full contest details and enter here:
https://www.elecrow.com/ai-open-hardware-contest.html?r=tGwErJ4ysPw=

📝 How to Get Involved?
* Head to the Elecrow campaign page.
* Fill out a quick survey.
* Upload your BOM file to apply for the PCB assembly sponsorship.
* Start building your project using the free LoRa modules (or any other Elecrow hardware)!
* Submit your project to the AI & Open Hardware Contest and cross your fingers for those prizes!

📬 Deadline & Contact:
Deadline for free stuff: April 30, 2025
Have questions? Hit up: doreen@elecrow.com

🌟 Why You Should Participate:
* Free hardware and sponsorships to help bring your projects to life
* A chance to showcase your work and get noticed by a larger audience
* Win cash prizes and get the recognition you deserve!

]]> Incorrect wiring of CrowPi2 7-segment display https://forum.elecrow.com/index.php?p=/discussion/427/incorrect-wiring-of-crowpi2-7-segment-display Sun, 30 Apr 2023 03:24:46 +0000 Raspberry Pi & CrowPi SpareSimian 427@/index.php?p=/discussions In trying to figure out why the segment example doesn't work right, I found that the CrowPi2's 7-segment display is improperly wired. I wrote a segment test that cycles through all the segments of the display and found that the decimal point bit for the first digit is wired to the decimal point indicator of the second digit of the display. The colon of the display is wired to the second digit's decimal point bit. The colon should be wired as a 3rd digit and the 3rd and 4th digit displays should appear in the I2S positions for digits 4 and 5 in order for the Adafruit driver to work.

This is why we need schematics, to confirm whether this is a design bug or a short on the circuit board connecting the wrong things. Based on my experience wiring 7-segment displays since the 80s, I'd say this is a design bug and the display is connected incorrectly to the chip. But I'd really like to see a schematic to confirm this.

Test code: https://pastebin.com/GYhcmmSm

]]> 📢 10 days countdown for #Elecrow's Spring Mechanical Keyboard Sale 🔥🔥 https://forum.elecrow.com/index.php?p=/discussion/421/10-days-countdown-for-elecrows-spring-mechanical-keyboard-sale Mon, 17 Apr 2023 07:15:06 +0000 Announcements Tammy_Elecrow 421@/index.php?p=/discussions 🚨 Only 10 days left for Elecrow's Spring Mechanical Keyboard Sale.🥳🥳👏🏻

(🚩 $9.9 for PCB, $4.9 for 3D Printing, $1 for Acrylic Laser Cutting)

Then, enjoy some interesting projects made through this promotional sale 😻😻

Hurry Up!👏🏻

]]> Some common circuit symbols you should know 🧐 for electrical engineer 👋 https://forum.elecrow.com/index.php?p=/discussion/410/some-common-circuit-symbols-you-should-know-%F0%9F%A7%90-for-electrical-engineer Fri, 10 Mar 2023 03:00:35 +0000 General Discussion Tammy_Elecrow 410@/index.php?p=/discussions 📒 As an electrical engineer, circuit symbols are essential to understanding and drawing electrical schematics.🧐

📜 Here are some common circuit symbols 🛠🔩🗜

📌 Any project requires a high-quality PCB, kindly check #ElecrowPCB 👋

]]> $5 Coupon for #Halloween2022 https://forum.elecrow.com/index.php?p=/discussion/336/5-coupon-for-halloween2022 Wed, 26 Oct 2022 07:42:40 +0000 Announcements Choudi 336@/index.php?p=/discussions ?#ElecrowPCB Sale is Up | Only $1 for 5 PCBs within 10*10cm https://forum.elecrow.com/index.php?p=/discussion/304/elecrowpcb-sale-is-up-only-1-for-5-pcbs-within-10-10cm Mon, 22 Aug 2022 09:53:43 +0000 PCB & PCBA Services Tammy_Elecrow 304@/index.php?p=/discussions https://bit.ly/3vwLyoJ ]]>