Programmer PCB for Skyper Pager e.g. NEC21A
The connection to the pager is realized by 4 wires (GND, RX, TX, EN). These need to be connected as outlined in the picture.
First THT version produced with Kicad
SMD Version to be mounted inside a RS-232 Plug case and powered by USB cable. There is a Mouser Cart for the parts except the 2.54mm pins and Sub-D 9 connector.
This project is released under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 (CC-BY-NC-SA 3.0, https://creativecommons.org/licenses/by-nc-sa/3.0/) license. You may edit and share it as you like, as long as credit is given and the license is not changed. You can build as many boards for you and your friends as you like and you can even sell it to them to cover your costs, however it is strictly forbidden to turn this into a commercial product! You are not allowed to build and sell these boards for profit!