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fhdm-dev 2023-03-11 16:20:00 +11:00
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53
docs/wiki/fscope-dso-500k-4b-unpopulated.md 100644
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@ -0,0 +1,53 @@
---
title: FSCOPE/DSO-500K Revision 4b and lower
---
### Unpopulated holes/pads
> If you have Rev. 2 of the FSCOPE board please see [FSCOPE-250K-Rev2](fscope-250k-rev2)
There will be some unpopulated holes/pads on your board. Depending on your board revision these may include:
_H9, H10_
<br>
These are tiny prototyping areas. One hole is connected to GND. The others are not connected to anything.
_R32, R33_
<br>
Extra current limiting resistors for the Wi-Fi and Trigger LEDS. Add resistors here (and possibly remove R30/R31) to adjust
LED brightness.
_SWCLK, SWDIO_
<br>
Debug headers
_H11_
<br>
Not used
_+3.3V, VSYS_
<br>
Test points
_-2.5V_
<br>
Test point for the -2.5V rail. Do not draw current from this rail as it will adversely affect the performance
of the oscilloscope.
_H17, RESTART_
<br>
Shorting these will restart the Pico (W). A momentary switch could be soldered to these holes/pads to make it easier to restart
the oscilloscope.
_H7, H15, R35, R36_
<br>
For connecting external Wi-Fi and Trigger LEDS if the board is to be enclosed in a case.
_H16, R32_
<br>
For connecting an external status LED if the board is to be enclosed in a case (no firmware support for this as yet).
## See also
{% include wifi-links.md %}
<br>
{% include scoppy-links.md %}

29
docs/wiki/fscope-dso-500k-v2-usage.md
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@ -67,26 +67,11 @@ See [here](fscope-dso-500k-dimensions)
#### Unpopulated holes/pads
> If you have Rev. 2 of the FSCOPE board please see [FSCOPE-250K-Rev2](fscope-250k-rev2)
<br>
> If you have Rev 4, 4a or 4b please see [FSCOPE-500K 4b](fscope-dso-500k-4b-unpopulated)
There will be some unpopulated holes/pads on your board. Depending on your board revision these may include:
_H9, H10_
<br>
These are tiny prototyping areas. One hole is connected to GND. The others are not connected to anything.
_R32, R33_
<br>
Extra current limiting resistors for the Wi-Fi and Trigger LEDS. Add resistors here (and possibly remove R30/R31) to adjust
LED brightness.
_SWCLK, SWDIO_
<br>
Debug headers
_H11_
<br>
Not used
_+3.3V, VSYS_
<br>
Test points
@ -96,19 +81,19 @@ _-2.5V_
Test point for the -2.5V rail. Do not draw current from this rail as it will adversely affect the performance
of the oscilloscope.
_H17, RESTART_
_H17_
<br>
Shorting these will restart the Pico (W). A momentary switch could be soldered to these holes/pads to make it easier to restart
the oscilloscope.
Restart/Reset. Shorting these will restart the DSO-500K. A momentary switch could be soldered to these holes/pads to make it easier to restart the oscilloscope. Double clicking the switch will cause the Pico W on the DSO-500K to enter USB mass storage mode.
_H7, H15, R35, R36_
_H7, H15_
<br>
For connecting external Wi-Fi and Trigger LEDS if the board is to be enclosed in a case.
_H16, R32_
_H9, R32_
<br>
For connecting an external status LED if the board is to be enclosed in a case (no firmware support for this as yet).
#### Miscellaneous
The holes at the corners of the board are 3.3mm (130 mil).