Not another AhoyDTU/OpenDTU-Box

thingiverse

This is my design for a problem already solved by countless others. I wanted a sturdy little box that can be assembled without screws or glue, is easy to print and I did not want to resolder anything. So this is the design I came up with. I used the parts as listed on the Ahoy-DTU website. So my design fits for an ESP32 WROOM with the NRF24L01+ with an external antenna, a SH1106 display and jumper wires.https://ahoydtu.de/getting_started/But I sourced the parts from Alibaba, where they were much cheaper in comparison to the shops listed by Ahoy-DTU. The assembly is a little tricky, because the bracket for the display does not seem to fit at first glance. This bracket uses the flexebility of pla. You need to rotate it 90° stick it in the upper part between the holder for the pcbs and rotate it in there.You need to flex the upper arm of the bracket to do so. I would put the cables on the display before installing it with the bracket.Afterwards, cable everything up, I made an Y-cable for the positive wire, and put the bottom and top side together and the box is rdy.I used the wiring as shown on the Ahoy-DTU website, but positive and ground on my screens were switched.https://ahoydtu.de/img/fritzing/esp32-38_nrf_ssd1306.pngI sanded the pcb of one NRF24L01+ with 180grit a little down, so it fits better.The other one fit from the start.