I am looking into getting some of these this week to test. There are two goals. 1. uC on each end with the Nordic device, one is sender and one is a receiver. Multiple receivers, the master can send a string with some lighting CV data including in the string, plus a receiver ID, and start byte. This is not time critical, any reliable baud rate, even 9600. 2. Off a hotshoe trigger, remotely fire all flash heads. This needs to happen as fast as possible. Is there some method on a Nordic that can do the flash without strings? Just a pin toggle of 50uS is the flash trigger, but the leading edge is all I need to trigger the processor from the Nordic.
If a string is required, then whatever the minimal string length the device(Nordic) will send MAY be fast enough after parsing. However, I am wondering is someone knows if these devices will allow a single bit to be transmitted and the uC can act with the utmost minimum of parsing, ideally none… if a pin goes high( or active low ), fire the strobe output. Xbee is a quick and simple method of strings, but someone told me on another forum to explore the Nordic for possible raw modes. Any thoughts appreciated.
If you don’t need the antenna connector, similar modules are available much cheaper from lots of suppliers on Ebay. If you just need to trigger a camera flash, there are simpler ways to do it. What is the range?
Leon, I want to control the flash, but using the same connection I am sending data to set control voltages for flash power and modeling light power. So the Prop will control 0 - 4V on the flash, 0 -4V on the model lights. The power controls are not time sensitive. The flash needs to happen as close to instantaneously as possible off the trigger from the hot shoe. Mode 1. the Hotshoe fires a pin on the Nordic, which fires a bit or byte(whatever is minimum length packet). A Nordic on the other end receives(no more than 100’). A Prop parses the packet, and outputs the trigger to the flash head. Now, if there is a way to bypass the Prop for flash purposes, that is great for timing expedite purposes. Mode 2. A PC or MAC has USB>FTDI>PROP>NORDIC Nordic>PROP>flash head via Prop DAC for power settings.
Two functions: Flash power control, requiring data, PWM on two pins. Sync control, simple 50uS pulse at the flash head, output sits high at 7VDC, 0V trigger for 50uS.