VACS:Projects:LPS:Issues
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;2007-07-28: I've succeeded in creating 4 single sided boards (LPS supply, positive rectifiers, positive outputs and positive voltage regulator). Before doing the final boards I checked on small scratch boards. This time I've used a transparent slide for the insolation (instead of a laser print on 80g paper). The printed board failed when the insolation time was 2mn and when I used only one slide. I tested with 2 slides, it was better. With 3 transparent slides that were above each other, the insolation succeeded. The insolation time was 1mn30, revelation 1mn. | ;2007-07-28: I've succeeded in creating 4 single sided boards (LPS supply, positive rectifiers, positive outputs and positive voltage regulator). Before doing the final boards I checked on small scratch boards. This time I've used a transparent slide for the insolation (instead of a laser print on 80g paper). The printed board failed when the insolation time was 2mn and when I used only one slide. I tested with 2 slides, it was better. With 3 transparent slides that were above each other, the insolation succeeded. The insolation time was 1mn30, revelation 1mn. | ||
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| + | ;2007-11-04: With the emergence of small Ethernet controllers I'm wondering if I should switch to Ethernet instead of an RS2323 isolated solution. Ehternet is isolated by default so this would solve that issue. Second, an Ethernet device is easier to connect compared to an RS232 device. However, the software that I'll have to run within LPS will probably be more complex. The Ethernet solution is also a little bit more expensive (arround 30 euros). | ||
Revision as of 12:34, 4 November 2007
This page keeps track of the issues found during the conception or building of LPS.
Software
- Must have a GNU Ada compiler for ATmega16 (GCC 4.1 is the target)
Hardware
- 2006-12-22
- The creation of several single sided boards failed. The clear reason is unknown. I have used different insolation time and the boards were not good enough. I suspect this is because the printed board were old (bought in 2001 or so) and the UV light has less effect on them.
- 2007-07-28
- I've succeeded in creating 4 single sided boards (LPS supply, positive rectifiers, positive outputs and positive voltage regulator). Before doing the final boards I checked on small scratch boards. This time I've used a transparent slide for the insolation (instead of a laser print on 80g paper). The printed board failed when the insolation time was 2mn and when I used only one slide. I tested with 2 slides, it was better. With 3 transparent slides that were above each other, the insolation succeeded. The insolation time was 1mn30, revelation 1mn.
- 2007-11-04
- With the emergence of small Ethernet controllers I'm wondering if I should switch to Ethernet instead of an RS2323 isolated solution. Ehternet is isolated by default so this would solve that issue. Second, an Ethernet device is easier to connect compared to an RS232 device. However, the software that I'll have to run within LPS will probably be more complex. The Ethernet solution is also a little bit more expensive (arround 30 euros).
