A screw terminal breakout and protoype board for D1 Mini ESP8266 boards
Designed by Brian Lough, Ships from Ireland
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What is it? It is a screw terminal breakout and prototype for the Wemos D1 Mini style ESP8266 boards. Each pin of the D1 Mini is broken out to its own screw terminal, plus there are some additional...
Read More…It is a screw terminal breakout and prototype for the Wemos D1 Mini style ESP8266 boards. Each pin of the D1 Mini is broken out to its own screw terminal, plus there are some additional screw terminals for power and ones that are user configurable.
If you are not familiar with the D1 Mini, it's an ESP8266 development board that can be bought extremely cheaply from China. It's fully programmable via the built-in USB port
Recently I built a project that required two boards pretty similar to these but using protoboard. While I was in the middle of building the second one I promised that it would be the last one I would ever make! Those two boards where not my first ones to build like that, when I am making a project where components are not attached to the perfboard directly, I use screw terminals for flexibility, and it is surprisingly time-consuming to strip and solder wires just to break out the pins. It's not a great use of the limited time I get making stuff to spend an hour building a simple platform for the project to go in!
I came across a board somewhat similar for this for an Arduino Nano and thought that something like this could be incredibly useful for speeding up development of projects.
I don't believe anything like this exists for ESP8266 based boards. It also uses large screw terminals compared to the Nano board mentioned above. I think it's the fastest way of building semi-permanent prototype projects. Did I just make up the term "semi-permanent prototype"? Maybe, but it sounds good!
It has the following features:
All 16 pins of the D1 Mini broken out to screw terminals.
Extra screw terminals for 5V and Ground, you can never have enough!
6 additional screw terminals connected to pads near the prototype area, these can be used for custom input or outputs to the project (e.g. if the output of a pin needs to go through a transistor)
Prototype area with all GPIO pins broken out beside it for convenience.
Flexible power options - projects can be either powered from the 2.1mm DC jack (5V only, but useful for projects with larger current demands, such as neopixels), The D1 Mini micro USB port or via the 5V screw terminals
NOTE: Does not include a D1 Mini!
The PCB is 5cm x 8cm.
Why is there no option to buy a D1 Mini? Honestly, it's because I would have to charge too much for it compared to what you are able to buy it yourself directly. A D1 mini is $2.70 delivered from Aliexpress or eBay, I would probably need to charge at least $7.50 for it to make sense for me to sell it. Let me know if this would be something you would still be interested in and I can look into it.
Why is the DC Jack Pre-soldered on the kit? Because I am an idiot! I don't know what layout I used for the DC jack, but even breadboard friendly DC Jacks didn't fit through the hole! Luckily I was able to fix the boards by drilling the holes through, but the DC jack needs to be soldered both sides of the board for the 5V pin. Rather than try explain this in instructions, I think I should just pay for my mistakes by pre-soldering them all! Full details of the fix can be found here on my YouTube channel.
What does the jumper block do? It controls connecting the D1 Mini 5V pin to all the other 5V pins. When the jumper is on the right two pins, the D1 mini will receive power from the DC jack, but the D1 mini 5V from the micro USB will not connect to the circuit because of the diode. I found that I had this problem with large neoixel projects, where I was trying to program the D1 Mini and the USB was then going to be trying to power 100 neopixels as soon as I plugged it in!
When the jumper is on the left two pins, the diode will be bypassed so the micro USB power will be connected to all the 5V pins.
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Gary | Oct. 27, 2018
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Hey everyone! My name is Brian and thanks for checking my Tindie Store.
I'm a software developer by trade but I've recently gotten into Arduino development after discovering the ESP8266, a WiFi enabled Arduino chip for $5 delivered blew my mind!
I started looking at Arduino stuff late 2016 and I'm really enjoying it. I did Electronic and Computer Engineering in college so I had some base knowledge of electronics but I'm having fun learning it again.
Check out my YouTube channel or Twitter for more info!