Using section control board for other purposes

Hardware Section Control
1

I was able to score a couple John Deere hydro handles from a 7750i forager cheap, same as S680, 9770 etc with different stickers. I’m going to be using one in my 1688 and swather and since I have 20 or so of the sectional boards seemed like a good way to control the functions / relays in a nice self contained package. Question being, with the relays being single acting on the board, will I need one for each function on the header?

https://d3lp4xedbqa8a5.cloudfront.net/imagegen/cp/black/800/600/assets/FarmTraderNZ/GalleryMedia/John-Deere-7550i-Forage-Harvester-4.jpeg

2

IF you want up and down on the same relay, then yes you would need SPDT relays. Or 2 single relays for up/down

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3

Too easy, should work with the board as it has SPDT relays on it. Thanks Brian

4

Finally got around to building these, is there a schematic anywhere? Most is pretty self explanatory but I’m drawing a blank on the resistors.

5

There is no software, they are driven by i2c so you would have to write all the code :frowning:

One of those things i never got done. Please share if you do get it working

Resistor values are on the schematic in github source folder or the support folder on desktop when installing

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Thanks for that, just had to get Eagle to view it. Only thing so far is the holes for the diodes needs to be enlarged slightly, I can post one to you once I get it going if you’d like

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That would be great. I was going to base it off of this site. really simple use, could be straight code.

https://tronixstuff.com/2011/08/26/arduino-mcp23017-tutorial/

8

There is also a adafruit Library on github here:

Maybe it gets easier with using this?

Something different:
Could it get a problem with the single arduino on the autosteer board to run one or even multiple relay-boards over I2C this way?

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Well that was the original plan, do it all off the autosteer board and use the i2c for relay control. Just never got to it :frowning:

10

Cool idea, my mcp23017 is laying on the table since november, but so less time.
I thought about a scalable system: esp32 or Arduino + mcp linked relaisboard + mcp linked switchboard. So you can make a PCB direct under the frontpanel and place the swichtes and LEDs thru hole mouted. Only power and i2c cable from the main pcb to the lid of the box.