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wiki:make_treat_dispenser [2020/09/28 16:23]
vizycam
wiki:make_treat_dispenser [2022/03/08 12:01] (current)
vizycam
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-{{wiki:​treat.mp4|800x10|loop,​autoplay}}+{{wiki:​treat.mp4|680x10|loop,​autoplay}}
  
  
-You can make a treat dispenser for your pet out of some fairly basic ingredients,​ the main ingredients being cardboard and a solenoid. ​ Here's what you will need:+You can make a treat dispenser for your pet out of some fairly basic ingredients,​ the main ingredients being cardboard and a solenoid.  ​It's pretty fun, and after you're done you can say "I made a robot to feed my precious <insert pet's name>, what did you do today?" ​  
 + 
 + 
 +Here's what you will need:
  
  * Some corrugated cardboard -- it can be used/​recycled  * Some corrugated cardboard -- it can be used/​recycled
  * Sharp X-acto knife  * Sharp X-acto knife
  * White glue  * White glue
- * 12V solenoid (like [[https://​www.amazon.com/​Tulead-Solenoid-Electronic-Actuator-Electromagnet/​dp/​B07VC5JKYG|this one]])+ * 12V solenoid (like [[https://​www.amazon.com/​Tulead-Solenoid-Electronic-Actuator-Electromagnet/​dp/​B07VC5JKYG|this one]].  If you use a different solenoid, make sure that it doesn'​t consume more than 1.75A @ 12V!)
  * A jar  * A jar
  * Some patch wire  * Some patch wire
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-We'll start by making a box.  We're making a gravity-fed treat dispenser, so we need a fair amount of height to keep things moving along and not getting ​clogged. ​ Our box is 7"​x7"​ on the base and 8" high.  ​+We'll start by making a box.  We're making a gravity-fed treat dispenser, so we need a fair amount of height to keep things moving along and not get clogged. ​ Our box is 7"​x7"​ on the base and 8" high.  ​
  
  
-Cut out five 8"​x7"​ rectangles. ​ We'll use four of the rectangles for the sides of the box and save one for later. ​+Cut out five 8"​x7"​ rectangles. ​ We'll use four of the rectangles for the sides of the box.  Save the extra for later. ​
  
  
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-Then attach the extension cord to pins and on Vizy's terminal block.  ​+Then attach the extension cord to pins 1 (ground) ​and 2 (12V) on Vizy's terminal block.  ​(We recommend these pins because the solenoid'​s operating current may exceed Vizy's maximum I/O current of 1000mA, whereas the 12V signal can switch up to 4A. You can verify that the solenoid you're using consumes less than 1000mA with an ammeter and then you can use one of the I/O signals to switch the solenoid if you wish.  If you're using a larger solenoid that consumes more than than 1.75A @ 12V, it will likely cause Vizy's 12V power supply to brown-out and reset Vizy.)
  
  
-[{{wiki:p1000667_result.jpg}}]+[{{wiki:image_771.jpg?640}}] 
 + 
 + 
 +And don't forget to plug the terminal block into Vizy. 
  
  
 ===== Testing ===== ===== Testing =====
  
-Test the treat dispenser with the  [[wiki:​pet_companion|Pet Companion application]], or with some simple Python. ​ Just type into a Python instance (you can bring up a Python instance by pointing your browser to ''​http://​vizy.local/​python''​+Test the treat dispenser with the [[wiki:​pet_companion|Pet Companion application]] ​by clicking on ''​Dispense treat''​. ​  
 + 
 + 
 +Or you can type in some simple ​lines of Python. ​ Just type into a Python instance (you can bring up a Python instance by pointing your browser to ''​http://​vizy.local/​python'' ​or by selecting **Python** in the [[wiki:​vizy_editor#​the-settings-menu|Settings Menu]].)
  
 <​Code:​python>​ <​Code:​python>​
-import ​vizy +from Vizy import ​VizyPowerBoard 
-power = vizy.VizyPowerBoard(+power = VizyPowerBoard()
-power.vcc12(1) +
-power.io_set_mode(vizy.IO_MODE_HIGH_CURRENT)+
 </​Code>​ </​Code>​
  
-You can then turn trigger the solenoid with:+You can then trigger the solenoid ​(open shutter) ​with:
 <​Code:​python>​ <​Code:​python>​
-power.io_write_bits(1)+power.vcc12(True)
 </​Code>​ </​Code>​
  
-then turn off with:+and turn off (close shutter) ​with:
  
 <​Code:​python>​ <​Code:​python>​
-power.io_write_bits(0)+power.vcc12(False)
 </​Code>​ </​Code>​
  
wiki/make_treat_dispenser.1601328201.txt.gz · Last modified: 2020/09/28 16:23 by vizycam