Have you tried to google for the part name?
Posts made by deshipu
RE: Solarshield 5V on the battery shield
Everything is possible, but I don't think the outcome will satisfy you. There are solar panel controllers dedicated for the task that will perform much better (and safer). The boost converter on the battery shield is not really well suited for this task.
RE: Wemos D1 mini motor shield i2c address issue
Looks like that firmware skipped the reading of the address pins, and instead hardcoded the address. I think it would be best to report an issue on github and ask the author to add it: https://github.com/pbugalski/wemos_motor_shield/issues/new
You can also change the hardwired address, I think it's being set on this line: https://github.com/pbugalski/wemos_motor_shield/blob/master/src/main.c#L72 (The value of the address is doubled there, so if you want 0x2e, you have to set it to 0x5c, etc.)
Buttons Shield for D1 Mini
I'm continuing my quest of designing the shields that I'm missing for the D1 Mini, and selling them on Tindie so that perhaps some manufacturer will pick them up and produce them cheaper in bulk.
This time it's a very simple one: 8 buttons and an I²C gpio expander to handle them. The buttons are arranged in a familiar pattern, well known from the handheld game consoles — four arrows and four fire buttons. It's designed to friction-fit on under shield (to make the whole as thin as possible), so there are no pin headers on it
It works very well with the OLED shield or any other display you might want to use, so that you can make simple games, menus, remote control for a robot or anything else you can think of.
Link to the store: https://www.tindie.com/products/deshipu/x-pad-20-buttons-shield-for-d1-mini/
RE: Wemos D1 pinout diagram
Reset pin is not a GPIO pin, so it doesn't have a number.
Here is a diagram I made for my workshops, maybe that helps: http://micropython-on-wemos-d1-mini.readthedocs.io/en/latest/setup.html#development-board
D1 Mini 12-channel Analog Shield
It took me some time to fabricate the PCBs, but finally, after 4 months of waiting the analog shields are available in my Tindie store.
This is another one of my homebrew (unofficial) shields for the D1 Mini. This one comes with a MAX1238 analog-to-digital converter chip, effectively giving your additional 12 analog pins, with range 0-4.2V.
You no longer need to connect an Arduino to your ESP8266 just to use some analog pins!
You read the measurements over I²C, simply reading the 12-bit values (read 2 bytes) from registers corresponding to the pins (1 for channel 0, 3 for channel 1, 5 for channel 2, 23 for channel 11, generally channel×2+1).
Unfortunately, since the chip has a fixed I²C address, it's not possible to stack those shields — you can only use one at a time, but you can use it together with any other I²C devices.
The project page is: https://hackaday.io/project/21500-d1-mini-analog-shield