EnviroDIY | Cdavis | Activity https://www.envirodiy.org/members/craig607/activity/ Activity feed for Cdavis. Fri, 10 Apr 2026 13:58:25 -0400 https://buddypress.org/?v= en-US 30 hourly 2 328001705acb16f39a5cb5e79b423dfb Cdavis replied to the topic DIY auto sampler in the forum Infrastructure and Equipment https://www.envirodiy.org/topic/diy-auto-sampler/#post-16890 Thu, 31 Mar 2022 20:57:16 -0400 @neilh20 so the board here is called a MKS Base V1.4 if i remember correctly. It’s an old 3d printer board. There are a slough of options and which is used really doesn’t matter. They are all, like the mayfly, a modified arduino. Though these use the arduino mega as their main design.

I have the relay controlling the power to the board itself.…[Read more]

]]> 80587b8223825fe6fcb9a8d3eae9f5c2 Cdavis replied to the topic DIY auto sampler in the forum Infrastructure and Equipment https://www.envirodiy.org/topic/diy-auto-sampler/#post-16888 Thu, 31 Mar 2022 19:38:09 -0400 @neilh20 For my sediment machines I use a high torque 920z Nema 17 motor and is rated for 3.36v and 2.1amps. It works very reliably. The one I prototyped is a 76oz Nema 17 which is rated for  4.2v and 1.5amps. I have a pancake motor as well but they are lower torque. Here is a reference to a number of steppers from the 3d printing side of things:…[Read more]

]]> 8f5801f2ef4dfd9c3a871fa5e9bf8d37 Cdavis replied to the topic DIY auto sampler in the forum Infrastructure and Equipment https://www.envirodiy.org/topic/diy-auto-sampler/#post-16886 Thu, 31 Mar 2022 15:14:00 -0400 @heather, I would consider that. I still need to figure out the details on implementation and code.

]]> 42506fc007a5af47475ad42ab0eab48f Cdavis replied to the topic DIY auto sampler in the forum Infrastructure and Equipment https://www.envirodiy.org/topic/diy-auto-sampler/#post-16870 Wed, 23 Mar 2022 21:55:55 -0400 The pump project that I used can be found here: https://www.thingiverse.com/thing:3148717

Marlin: https://marlinfw.org/

Here is how I currently put this strategy into action. A wifi connected outlet turns the machine on and off.

https://youtu.be/c7tz9yOD6Wc

]]> 80404429064effa5ee5042d4bfa2d712 Cdavis started the topic DIY auto sampler in the forum Infrastructure and Equipment https://www.envirodiy.org/topic/diy-auto-sampler/ Wed, 23 Mar 2022 20:12:42 -0400 During my lunch break today I managed to slap together a prototype auto sampler that could potentially complement the mayfly. It’s also pretty cheap. I borrowed a 3d printed peristaltic pump design that I have borrowed before for an automated sediment toxicity renewal system that I have built for our lab. It has been very reliable and I already…[Read more]

]]> 6e021aa4d11771259ff2102e1ed11b81 Cdavis became a registered member https://www.envirodiy.org/activity/p/6892/ Thu, 17 Feb 2022 00:17:11 -0500 0