This project went exceptionally well. With just under two weeks of prototyping and 3.5 straight hours of soldering, the ESP8266 Capsule is complete! The project as I’ve been showing you in previous posts has been crammed into an enclosure (a food container). Let’s take a look at how the soldering went.
The only plan I had was a very rough schematic of the project. I skipped the perfboard planning on paper which is something I started doing with my projects that ended up on perfboards. I thought the circuits were simple enough to wing it… While that’s was somewhat true, it was challenging at times but it all worked out.
I pulled apart the prototype since I had the schematic to work with. I used fresh ATmega328p and AMS1117 boards since I like to have a couple rough assembled ones laying around for prototyping with.
I used some cut jumper wires that still have the female connector on it to connect up the LCD. The ones I used were actually cut off of the old Box project that was sacrificed for this project. I like to think of this as the Box 2.0 since it’s pretty much the same thing, except it gains an internet connection but loses the real-time clock.
This was about halfway through the soldering process. I got increasingly concerned with all of the connections flying out everywhere. They’re that long just for assembly. They would be cut down when it was time to connect everything together.
The first test was scary, as it usually is. The LCD lit up but didn’t show anything. After a few minutes, I realized the potentiometer that adjusts the contrast of the text was turned all the way down for some reason. I thought it would have stayed the same since it was directly taken from the prototype.
The only real issue was with the photoresistor. One of the legs had a loose connection that I had to touch up with my soldering iron a couple more times to get right. I would have liked to hot glued parts of this project but I don’t think I have enough glue for my glue gun. I put some tape in hopes that it’ll help things stay in place. Everything is so tightly packed in there, mostly because of the female connector for the LCD connections, so things aren’t shifting around too much inside.
This is the final product. The sensors are mounted on the top with the LCD underneath it. Beside the LCD is a switch to turn on and off the LCD backlight.
It looks very similar to the Light Timer Project since it uses the same kind of enclosure and LCD. I’d like to think I’ve progressed since then. There are no breadboards tucked in there, and I’m using some custom PCBs… That’s progress to me!
I find that inexpensive switches are hard to find so my previous projects usually never had one unless I had a switch I pulled from an old toy or something. My switches from China finally came in yesterday. They’re cheap and don’t fit in a breadboard, but they work great in the project.
Now that it’s in the enclosure, it can be moved around, especially since it can still be powered by batteries. I’m thinking of leaving it outside for a day and watch the data come in. It’ll be a designated day I’d announce since I’d have to pick a good day to do it. The enclosure is hardly weatherproof, and the power in contacts are fully exposed. I could put it in a bag, but I think that would affect the humidity readings. I’ll let you know.
Thank you for following along with this project! Stay tuned for more projects coming soon!