Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung Nächste Überarbeitung Beide Seiten der Revision | ||
skyperdescription [2018/10/10 11:54] df2et [Re-aligning the RF components] |
skyperdescription [2019/06/16 19:46] dg5ffn |
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You need an interface that supplies 3v0 to the pager to activate its programming mode. A small SMD PCB that fits into a DB9 connector case is described here: https://github.com/dk4pa/SKYPER_PROGRAMMER. Power is drawn from a USB port and converted to 3v0. A small amount of PCBs is available at cost from the authors. Please contact DK4PA or DF2ET. The Skyper has a programming interface which is located inside the battery compartment. It requires the wiring of GND, 3v0 as well as RX/TX lines. All experiments to build some sort of plug failed so far. Thus we normally solder the 4 wires to the pads after opening the case. | You need an interface that supplies 3v0 to the pager to activate its programming mode. A small SMD PCB that fits into a DB9 connector case is described here: https://github.com/dk4pa/SKYPER_PROGRAMMER. Power is drawn from a USB port and converted to 3v0. A small amount of PCBs is available at cost from the authors. Please contact DK4PA or DF2ET. The Skyper has a programming interface which is located inside the battery compartment. It requires the wiring of GND, 3v0 as well as RX/TX lines. All experiments to build some sort of plug failed so far. Thus we normally solder the 4 wires to the pads after opening the case. | ||
- | {{ :skyper:skyper_prog.jpg?direct&600 |}} | + | {{ :skyper:skyper_prog.jpg?direct&600 | Skyper Programmer }} |
+ | The connection between programming interface mentioned above and Skyper are as follows: | ||
+ | |||
+ | {{ :skyper:skyper_progger_connection.jpg?direct&600 | Connection of progammer and Skyper }} | ||
==== Software ==== | ==== Software ==== | ||
Zeile 72: | Zeile 75: | ||
{{ :skyper:upgrom.jpg?direct&600 |}} | {{ :skyper:upgrom.jpg?direct&600 |}} | ||
+ | |||
+ | ===== Removing the display from the case ===== | ||
+ | |||
+ | The display is mounted in the case with clips. You can use a small screwdriver to *carefully* pull away the case from the display and lift the display (each side after each other) | ||
+ | |||
+ | |||
+ | {{ :skyper:skyperoeffen0.jpg?400 |}} | ||
+ | {{ :skyper:skyperoeffen1.jpg?400 |}} | ||
+ | |||
+ | {{ :skyper:skyperoeffen2.jpg?400 |}} | ||
+ | |||
+ | {{ :skyper:skyperoeffen3.jpg?400 |}} | ||
+ | {{ :skyper:skyperoeffen4.jpg?400 |}} | ||
+ | |||
+ | Photos courtesy DK7TD | ||
+ | |||
+ | |||
+ | |||
+ | ===== Preset of display contrast ===== | ||
+ | |||
+ | Have you ever asked yourself what this tiny trimpot on the rear side of the display board does? | ||
+ | |||
+ | Well if your display is working fine and contrast setting can be done via setup menu there is | ||
+ | probably no need to. | ||
+ | |||
+ | The initial setting was done by the manufacturer and normally this should work all right. | ||
+ | |||
+ | In case you have trouble with your display contrast it may be helpful to check this alignment according to the picture shown below. | ||
+ | |||
+ | Turning this trimpot clockwise will increase display contrast while turning counterclockwise will decrease it. | ||
+ | Please be aware that this is a very coarse setting. This SMD-trimpot has no upper or lower limitations. It can be turned around the full 360 deg. | ||
+ | |||
+ | The fine adjustment is done afterwards in the Skyper setup menu using the up and down keys. | ||
+ | |||
+ | |||
+ | {{:p4240071.jpg|}} | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | ===== Separating the display board from the case ===== | ||
+ | |||
+ | In case you have trouble with the silicone rubber keyboard or with the microswitches underneath | ||
+ | you may want to take display board and case of your Skyper apart. | ||
+ | |||
+ | Another reason to do this may be that you want to clean the display and case from the inside. | ||
+ | |||
+ | |||
+ | {{:p6160003y.jpg|}} | ||
+ | |||
+ | Of course you can do this the way DK7TD describes it using a small screwdriver. | ||
+ | |||
+ | If you are unlucky you may end up with a display where some lines of pixels are missing | ||
+ | when you power up your Skyper afterwards. | ||
+ | |||
+ | What has happened? While pulling out the display board this way the flexible board connector | ||
+ | atop of the LCD display may move and some pins can get loose. | ||
+ | |||
+ | Should this ever happen there is no way to fix this. | ||
+ | |||
+ | |||
+ | |||
+ | {{:p6160026y.jpg|}} | ||
+ | |||
+ | After experiencing this twice up to now (I have modified >20 Skyper) I asked myself: | ||
+ | |||
+ | Is there a safer way to work on the display board? | ||
+ | |||
+ | YES there is one. | ||
+ | |||
+ | You can fix the LCD to the display board applying a few drops of 2K glue at the positions | ||
+ | shown below. | ||
+ | |||
+ | After hardening for some hours you can pull out the board using a simple smartphone | ||
+ | opening tool at the two shown positions. | ||
+ | |||
+ | One tool is enough - you don't need two of them. | ||
+ | |||
+ | |||
+ | |||
+ | {{:p6160081z.jpg|}} | ||
+ | |||
+ | |||
+ | |||
+ | {{:p6160091y.jpg|}} | ||
+ | |||
+ | If you did the soldering and the modification on the RF board of your Skyper yourself | ||
+ | it should be no problem for you to get the old microswitches out and new ones in. | ||
+ | |||
+ | For me it was difficult to get them here in Germany. The dimensions are listed below. | ||
+ | I found them on eBay. They are quite inexpensive even if you have to order 100 pcs. | ||
+ | |||
+ | In my opinion its a good idea to replace all 4 microswitches even if only one | ||
+ | is faulty. So the look and feel is the same on all 4 keys afterwards. | ||
+ | |||
+ | {{:p6160079y.jpg|}} | ||
+ | |||
+ | |||
+ | |||
+ | {{:smd_kurzhub_mikroschalter.jpg|}} |