/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---5-circuit-designMost of the heavy work was complete, it is still missing the water tank and pump connection thought. Now is time to describe how the system will work and establish bases to start sketching the program. We will start with a very basic design...en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---5-circuit-designFri, 05 May 2017 19:27:32 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b91b6f32-38cc-470f-b942-57e02af27df1DAB0<p>I agree with Scott.</p><p>&nbsp;</p><p>Usually you do not want to exceed more than about 20mA on the outputs.</p><p>Use a driver transistor or a MOS FET and you can do the job.</p><p>&nbsp;</p><p>DAB</p><img src="https://community.element14.com/aggbug?PostID=2984&AppID=147&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---5-circuit-designFri, 05 May 2017 14:09:09 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b91b6f32-38cc-470f-b942-57e02af27df1rsc1<p>Hi Fernando,</p><p>The Edison Arduino board may not be able to drive your relays directly (32mA @ 5V).</p><p>I&#39;ve had problem with some Arduino shields on the Edison board because of this. </p><p>Scott</p><img src="https://community.element14.com/aggbug?PostID=2984&AppID=147&AppType=Weblog&ContentType=0" width="1" height="1">