Dash button emergency style

thingiverse

This emergency-style button can easily accommodate a Wemos Mini D1 with Battery Shield and a Li-ion battery 18650, 3350mAh. A simple push-button is conveniently added to the center piece. The button type matches the one seen in the picture. All parts are carefully screwed together without any need for glue, allowing them to be detached again at will. Wires from the Wemos to the button must be soldered, of course. The red cap needs to accommodate a spring in its center. You'll have to slide the spring over the rectangular portion of the central cylinder. A Micro USB female-to-male extension cable is inserted for easy recharging without having to reopen the case. This setup is used as an Amazon Dash Button clone. When pressed, my Wemos wakes up from deep sleep, connects to Wi-Fi, sends an MQTT message, and returns to deep sleep. This setup boasts 60 days of autonomy when the button is pressed three times a day. The button measures 86x86mm, while the case stands at 30mm high, with the button height being 60mm.