looking for someone who can make a prototype product for long term project
I need a timer with led screen that can be attached to:
Idea is to count up and display the time that the valve is operating (switched on).
timer should be in 4 digit ss:msms format, (similar to this) and should keep the last value for 60 sec or until the valve is switched on again
power is available form valve but have to plan to hold the value on screen so probably small battery is needed.
by activating the valve, timer resets and starts to count.
display has to be small and on a long (10cm) flexible cord as it will be mounted by magnet away from valve.
would be good to have tolerance to measure this for 220/60 and also 230/50 current
Hoping to develop a simple, plug and play device (connect to the valves pins), that novices can attach to valve without extra tools or interfering with existing setup of machine
physically would be good to look like http://imgur.com/a/4Jeju
Cheers, and looking forward to your offers