New project almost complete.

Pi-star Hotspot, custom Nextion screen design, Pi Zero 2W, geekworm X306 "UPS", MMDVM dual hat with built in antennas (shorter range, but easier installation for a portable node), 3000mAh 18650 battery. The case design is my own, spun up in #openscad and 3d printed.

I have some internal wiring to do. As it sits the fan runs whether the Hotspot is powered on or not. I'm going to use a 2n2222 to switch the ground side of the fan based on whether the nextion screen is receiving power or not.

I also need to add a power switch to shut the UPS off once the system has been shut down... and power it back up again.

#dmr #HAMradio #pistar #mmdvm #nextion #geekworm #3dprinted

EDIT:
Power switch (push-button, using the header on the X306) has been installed.
Transistor installed with a 680 Ohm bias on the base (to reduce current to the transistor but keep the NPN junctions in the saturation/full on region) installed to switch the negative/ground wire on the fan.

This thing is ready to take on the road with me.

I built a touchscreen desk controller with @esphome and @homeassistant to replace my boring desk controller!

Check it out here! 👇🏻👀https://youtu.be/jZzNDveuDVY

Enclosure needs some work 😂 but it’s a fun weekend project!

#ESPHome #ESP32 #SmartHome #Nextion #HomeAssistant

A Modernized Metric Clock https://hackaday.com/2023/11/22/a-modernized-metric-clock/ #frenchrevolutionarycalendar #frenchrevolution #particlephoton #clockhacks #nextion #seconds #french #metric #clock #IoT

[Перевод] Прямая загрузка прошивки в дисплеи Nextion фирмы ITEAD без использования IDE. Протокол v 1.1

Загрузка прошивки в дисплей фирмы ITEAD Nextion без использования IDE. Это перевод официальной инструкции производителя. Протокол версии 1.1 Актуален на конец 2023.

https://habr.com/ru/articles/775540/

#NEXTION #NEXTION_FIRMWARE #NEXTION_UPDATE #NEXTION_IDE

My lunch box #MMDVM hat has had added 3.5" #Nextion enhanced display to the lid, also added a 24V fan for air circulation. The power to all this is via a 12V to 5V buck converter and the fan is connected to the 12V input to that, and the Pi and MMDVM Dual at is connected to the USB socket with short cable.

Also has room to have a battery bank to be add to it in the future if needed

#hamradio #digital #DMR #DMR2YSF

So nice the #Nextion Enhanced drivers are included with the #W0CHP PiStar Dash, so I have connected the display back to my #MMDVM hat attached to the lid of the lunch box

From idea to #FreeCAD design to #3Dprinted case and assembled device in a couple of hours - I love rapid prototyping! This is a #nextion display connected to an #esp8266 (d1 mini) interfacing to #HomeAssistant to show temperature and humidity readings for several rooms 😎