en:projekte:ovi40-sdr:aufbautipps-ui-pcb

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en:projekte:ovi40-sdr:aufbautipps-ui-pcb [07.11.2017 11:45] – more information for Linux usage df8oeen:projekte:ovi40-sdr:aufbautipps-ui-pcb [07.02.2018 06:06] (current) df9ts_user
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 +{{tag>english}}{{tag>review}}
 ====== In General ====== ====== In General ======
-2do...+ 
 +SMD components are a reality in electronic gear since at least 15 years. Refusing to use SMD would mean refusing to accept reality. Soldering SMD components is quite different from soldering wired components. But soldering SMD is by far "impossible". SMD soldering may seem difficult at first. It is quite feasable to do SMD soldering with standard soldering tools that you may have already. Please find below some general hints on SMD soldering that you may try before starting to solder your mchf or OVI40. Better to know the SMD soldering basics in advance than to have to make tedious soldering corrections later...
  
  
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 So the I40 UI pcb should have the male connector strips on it. Its very useful to keep that rule which makes testing with the RF boards of different owners very easy. If you use a 24LC1025 type serial EEPROM fit R101. For all other EEPROM versions leave it out. So the I40 UI pcb should have the male connector strips on it. Its very useful to keep that rule which makes testing with the RF boards of different owners very easy. If you use a 24LC1025 type serial EEPROM fit R101. For all other EEPROM versions leave it out.
  
-===== Preparing the 3.2" LCD display ===== +===== 3.2" LCD is now obsolete - standard LCD of OVI40 becomes 3.5" ===== 
-The LCD display needs to be "treated" with a dremel driver or small coping or jig saw first. + 
-The supporting pcb must be cut at the upper, bottom and left side flush to the level of the LCD panel housing itself. The left soldering holes need to be also cut off here. Holes or pins on the right side of the panel, where the flat ribbon cable runs out, need to mandatory kept in place ! +3.5" LCD panel has exactly the same measurement as 3.2LCD PCBPlease pay attention to solder the two buttons S7 and S8 **to the bottom position** (in one row with the function buttons under the LCD) so that they do not conflict with LCD. 
-{{:projekte:ovi40-sdr:lcd.png?200 |}} +
-On the left side where the soldering holes were cut off, we have the potential danger that copper strips from the pcb can be possibly shorten by the metal frame of the panel. This can easily be avoided with a small piece of scotch tape. +
-To place the tape lift the panel approximately 0.5mm very carefully with a cutter knife and place the scotch tape under it. Fold it over the pcb edge. +
-If you do not have an LCD with double line connector strips at the right end, you need to place the connector strips with the long side of the pins from above (!into the soldering holes. Solder them into place from the bottom side. +
-This way you do not need to remove the plastic carrier afterwards which may damage the panel connectors.  +
-The short ends of the connector strip pins on the upper (plastic) side need to be cut off to finalize this step. +
-Special attention need to be payed here to the very sensitive flat ribbon cable to not damage it. A damage of the cable will most likely end up in totaling the LCD. +
-Attention should also be payed to not use too much solder to avoid little "humps" here. These humps keep the panel connectors from a flat connection to their male counterparts on the UI pcb.+
  
 ===== Detailed photos ===== ===== Detailed photos =====
 +
 One picture says it all - The following photos show the fully populated UHSDR I40 UI pcb.: One picture says it all - The following photos show the fully populated UHSDR I40 UI pcb.:
  
-{{:projekte:ovi40-sdr:ui-top.jpg?200 |}}{{:projekte:ovi40-sdr:ui-stm32f7.jpg?200 |}} +Pictures coming soon!
-{{:projekte:ovi40-sdr:ui_audio_codecs.jpg?200 |}}{{:projekte:ovi40-sdr:ui_encoders_left.jpg?200 |}} +
-{{:projekte:ovi40-sdr:ui_lcd.jpg?200 |}}{{:projekte:ovi40-sdr:ui_sc-card-usb-plugs.jpg?200 |}}+
  
  
  • en/projekte/ovi40-sdr/aufbautipps-ui-pcb.1510055133.txt.gz
  • Last modified: 07.11.2017 11:45
  • by df8oe