R-DAS Tiny user’s manual V1.4
©2007 AED Electronics
Optionally, the user can supply an external igniter supply as shown in Fig. 3.
1. VCC - Purple
2. GND - Blue
3. Vcap - Green
4. Vign - Yellow
5. Drogue - Orange
6. Main - Red
7. Igniter 3 - Brown
8. Igniter 4 - Black
R-DAS Board
User supplied
Battery for power supply
Firing capacitor
Pyro outputs
Igniter supply
Safe/Arm switch
Drogue igniter
Main igniter
10k-Ohm dummy
Breakwire
External igniter supply
Figure 3:
R-DAS Tiny wiring with optional igniter power supply, breakwire, and un-used Pyro 3 output.
Note:
Earlier versions of the wiring loom had a white #1 wire color.
LED’s
There are four red LED’s on the R-DAS board. These LED’s are used to indicate continuity of the igniters.
When a breakwire is selected the LED for igniter #4 will flash once every second to indicate that this pin is
configured as a breakwire input. When the breakwire is triggered the LED will be on for one second. After this it
will remain off.
X-acceleration
The R-DAS is factory configured for dual axis acceleration measurement. The acceleration in the Z-axis is
always enabled and cannot be switched of by the user. The acceleration in X-direction is connected to ADC5 by
means of a solder jumper. If storage of the X-acceleration is desired, ADC5 should be selected in the sampling
section of the R-DAS configuration menu. If ADC5 is to be used as a regular analog input, the solder jumper
should be set to E (external) instead of A (acceleration).
5
