fotoopa wireless slave flash controller 4 flashes.
Shema of the smaller slave wireless controller. Use the Atmega328 AVR controller. This slave controller have 4 flash outputs in TTL mode.
All settings are transfert via the mastercontroller at 868 MHz. The slave version is small. Power via 3xAA batteries.
Today tests are done at 35m from indoor to outside without any problem. All settings are done via the remote master controller. Powercontrol is done via TTL mode of the flashes and are set via the remote master controlbox. A few leds are used to see the powerlevel of the battery and one led confirm the received commands. A buttom a be used to manual fire the flashes as test on the small box. Software can be updated via a DB9 connector. Batterys can be charged via a 2.1mm power connector. 4 flashes can be connected to this small box.
Update 2009 Nov 07:
More tests are done to optimise the distance and the reliability. Now I've 100% flash results at 30m from indoor to outdoor. The new results are recovered from the optimal transfertspeeds and also from the correct bandwidth setting. I turndown the DRSSI signal also a little and slower the VDI setting. All this new settings results into a very reliability signaal between TX and RX. Now I'm tunning the timings to be perfect equal between the direct flashes on the master and the wireless on the Slave. This difference will be zero for the same powerlevel on the flashes. Here the link to the master controller:
www.flickr.com/photos/fotoopa_hs/4025994993/in/set-721576...
The results are now really good. I'm very happy with this controlsystem!
fotoopa wireless slave flash controller 4 flashes.
Shema of the smaller slave wireless controller. Use the Atmega328 AVR controller. This slave controller have 4 flash outputs in TTL mode.
All settings are transfert via the mastercontroller at 868 MHz. The slave version is small. Power via 3xAA batteries.
Today tests are done at 35m from indoor to outside without any problem. All settings are done via the remote master controller. Powercontrol is done via TTL mode of the flashes and are set via the remote master controlbox. A few leds are used to see the powerlevel of the battery and one led confirm the received commands. A buttom a be used to manual fire the flashes as test on the small box. Software can be updated via a DB9 connector. Batterys can be charged via a 2.1mm power connector. 4 flashes can be connected to this small box.
Update 2009 Nov 07:
More tests are done to optimise the distance and the reliability. Now I've 100% flash results at 30m from indoor to outdoor. The new results are recovered from the optimal transfertspeeds and also from the correct bandwidth setting. I turndown the DRSSI signal also a little and slower the VDI setting. All this new settings results into a very reliability signaal between TX and RX. Now I'm tunning the timings to be perfect equal between the direct flashes on the master and the wireless on the Slave. This difference will be zero for the same powerlevel on the flashes. Here the link to the master controller:
www.flickr.com/photos/fotoopa_hs/4025994993/in/set-721576...
The results are now really good. I'm very happy with this controlsystem!