OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Bee (OSBee) › Running: Esp8266 Open Sprinkler on OS Bee 2.0 hardware? › Reply To: Running: Esp8266 Open Sprinkler on OS Bee 2.0 hardware?
Sure, send an email to [email protected] and we will ship one to you.
Latching valves generally have a coil resistance of only a few ohms (like 3 to 5 ohm). So upon activating or deactivating, it really draws a high impulse current (several amps). The good thing is that it only needs such high impulse current for 25 to 100 milliseconds. That’s why using a large capacitor to provide this impulse current is the best solution, that can avoid depleting the battery or power adapter, or trigger a power reset.