The adapter for the CEO789 e-ink display appears to cover all the Pico pins.
Is there a way to access the unused pins?
Pity it is not like your PiicoDev expansion board CEO7693 with double females.
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Adding a breakout board with dual headers in between the display and the pi is probably the way to go. It’s what I used for my led clock project where I needed to break out connectors for a TOF distance sensor between an ESP32 Feather and a Featherwing display module.
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Thanks Politas
I have searched for such a breakout board without success.
I will just use jumpers to connect data and power.
I have ordered an epaper display to try it out.
Cheers,
Brian
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Should be able to jury rig one by cutting down a breadboard, perhaps? Or, if you want multiples, you could look into getting a custom PCB made. They’re incredibly cheap.
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Hey Brian,
Some stacking headers on the Pico should work: https://core-electronics.com.au/36-pin-stacking-header-pack-of-5.html (These ones would have to be cut down to 20pins) or two of these 10pin ones per side https://core-electronics.com.au/arduino-stackable-header-10-pin.html
I couldn’t track down any 20pin variants.
How much room were you working with? You could use something like an expander, even just for prototyping.
- https://core-electronics.com.au/pimoroni-pico-decker-quad-expander.html
- https://core-electronics.com.au/pimoroni-pico-omnibus-dual-expander.html
@Politas - was something like this what you were after? https://core-electronics.com.au/pimoroni-pico-proto.html it would be great if everyone stuck with a name ahaha. I know of them going by protoboards, breakouts boards, expanders, expansions, the list goes on
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Thanks Liam. I have ordered an epaper module and the Pimoroni dual expander.
Cheers,
Brian
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No worries Brian! Keen to see what you make!
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I am making a battery protector for my shed.
I receive a good feed in tariff for my small solar system so I don’t want to upgrade.
I have installed a solar panel on my shed connected to an AGM battery and an inverter which I use to charge my eBike etc.
I know it is illegal to do 240v work so I want to measure the voltage in the battery and switch off the 12v to the inverter so it doesn’t flatten the battery.
I plan on using a voltage divider (R1 39K and R2 10K to get a voltage 2.07 to 3.1 to feed into analog on the Pico and switch a relay at about 11.5 volts.
Oh and the ordered epaper display will show current voltage, updating only when it changes by .5V.
Perhaps when I have the code tested and a picture of the setup, I should start a new subject on the forum.
Cheers,
Brian
3 Likes
Hi Brian,
Absolutely! I love the aspect of removing the inverter from the equation entirely to keep the quiescent draw of your system low.
Keen to see how you go on this one, it definitely deserves its own thread!
-James
