Here is the PCB and enclosure I’ve been working on for the Wemos D1 Mini & Pro. It’s all THT (through-hole soldering), no SMD (tiny surface mount). It brings out all the pins, and runs D5 - D8 through a level shifter. It should support four parallel sets of three wire LEDs (WS281x), or two sets of four wire LEDs (APA102). It also includes a spot for a large 1000uF capacitor, IR receiver, and data/clock line resistors. I’ve tested it out pretty thoroughly. One is currently running my 250 LED tree.
I have two spare PCBs (can order more), and I’m waiting on a shipment from Wemos (should be in any day now). Would anyone be interested? Just the PCB? Enclosure? Full kit? Fully assembled? Let me know if you’re interested, or if you have any questions, comments, suggestions, etc in the comments. Thanks!
Awesome stuff. I am very interested in the PCB and enclosure. I have a couple D1s and many level shifters. I was about to (and probably still will) solder one up myself, but this form factor is perfect. Out of curiosity, do you know of the top of your head what pins I should use for 2 sets of 4 wire chipsets?
Ha, should have looked at the pinout on the bottom in the photos before asking the questions about which pins. Even in photos that PCB is helping me out.
@Thomas_Runge if you want to drive the APA102 at high frequencies, you absouletely need a voltage level shifter or will need to conect a mull.pixel close to the d1
@Jason_Coon This is great Jason, can i ask what is the maximum frequency that those level shifters can take?? I have started using simple AND gates for high speed shifting with great results. This enclosure is an awesome idea, i build many similar ones(but nastier looking) for all my projects.
Thanks again, everyone! I just ordered more boards, but they usually take a few weeks to come in. If anyone would like one, PM me, or use the contact form here: https://evilgeniuslabs.org/contact Eventually I’ll get them on Tindie.
Your feedback on price is most welcome. I think I’ll need around $8 for the PCB, $8 for the enclosure, $30 for a full kit (PCB, enclosure, Wemos, level shifter, and all the parts). All those prices are without shipping, of course.
@Jeremy_Spencer definitely! Send me a PM, or use the contact link above.
@Leon_Yuhanov , I haven’t measured yet, and honestly don’t have a scope or analyzer capable of measuring it with. The 74HCT245 is the most highly recommended shifter here. Can I ship you one and get your feedback? PM me or use the contact link above if you’re interested.
@Thomas_Runge , what Leon said. I’ve also had lots of great experiences without level shifters, but sometimes I’ve been completely unable to get an installation working without one. You don’t need one until you do.
@Stefan_stelb_Le_Bret , @Gareth_Jones , and anyone else interested in just the PCB: send me a PM and I think I can have them shipped directly to you with free but slow shipping.
