If you have a Wemos D1 mini card and you want to test the series of sensors contained in the package "37 in 1 Sensor Module Board Set" which is sold by many sites you can use this shield.
On the shield are available many connectors that are already properly connected with the digital or analog ports of the Wemos D1 mini card. On the board there is also already a power supply stage that allows powe...
Based on Great Scott idea:
Simple (yet powerful :P ) ATTiny programming shield.
Pin 4 connected to LED for simple blink test etc.
Design was enhanced since photo was made. "Yellow LED" is now further from IC,
so ATTiny is easier to grab :)
If you see any mistakes - let me know :)
Sheld for Arduino with an H-bridge L293D which allows to drive two DC motors
Prototype of the shield
New version [New version] with there is an integrated 74LS06 in which are present within six logical NOT gates (inverters).
Two of these are used to invert the logic value present on the input. In this way it is possible to reduce the number of ports required to dr...
Template (PCB and interface symbol) to copy for any kind of shield designs for Raspberry Pi B+. The PCB contains 6 layers with layer display at the lower edge. The assignment of layers is:
- top: signal, polygon connected to GND
- bottom: signal, polygon connected to GND
- layer 1: inner, signal
- layer 2: inner, polygon VCC
- layer 3: inner, polygon GND
- layer 4: inner, signal
A custom shield for using a SIM800L-based GPRS transceiver to connect to the internet over GSM. This is designed to be driven by a SparkFun SAMD21 Mini board, and includes a 128x64 OLED display and an NRF24L01+ 2.4GHz RF module. It's powered by a lithium-ion battery (18650), and has a microSD port to archive data.