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Forum Index : Microcontroller and PC projects : Newer RP2040 Zero
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Quazee137 Guru  Joined: 07/08/2016 Location: United StatesPosts: 567 |
I was looking for cad files for Waveshare RP2040 Zero and ran across this Flat 2040 zero I am redoing my E-Trike Display and control's. I have a MM170 with 3" Display and now thinking of a Small RP2040 board with 4" LCD or 10" VGA. Question Trike has 48VDC 20A battery. I have a box of 12VDC led lamps was going to use convert module but now thinking each lamp could be PWM with a 20% duty cycle and that makes wiring and power simpler also no drain from down convert module. High side switching because all returns are grounded. Quazee137 Edited 2024-07-16 20:30 by Quazee137 |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6781 |
That's nice. A version that can be surface mounted without slotting out the board. If you're going to do that with the lamps be careful. :) It might be an idea to at least put some sort of fastish fuse in (too fast and the lamp cold current will blow it, too slow and the lamp will blow to protect the fuse) just in case the Pico freezes with a lamp or lamps on. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4223 |
Quazee, Don't take the risk. Chances of frying the LED's with 48V are huge. Make 12V 60V->12V Volhout PicomiteVGA PETSCII ROBOTS |
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Rickard5 Guru Joined: 31/03/2022 Location: United StatesPosts: 463 |
@ Quazee those are neat little RP2040 board, but their pricey little buggers I may be Vulgar, but , while I'm poor, I'm Industrious, Honest, and trustworthy! I Know my Place |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9306 |
WS also do a flat version, with the USB socket and buttons on another little PCB. The two are connected via a FPC cable. WS Zero FLAT VERSION I've used a few of these, and they are also still only five bucks. $4.50 if you don't want the USB connector/button board and FPC cable. I bought ten or so without the cables/USB socket boards, and two or three with the socket/button boards and FPC, then you can use the same USB board and FPC on all the other ones. Edited 2024-07-17 11:47 by Grogster Smoke makes things work. When the smoke gets out, it stops! |
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| Quazee137 Guru Joined: 07/08/2016 Location: United StatesPosts: 567 |
I got a few of those and for me the FPC cable is a pita more than half the time also makes it harder to use as there are two boards to make it complete. A better option would be through hole solder pads for the USB like the 10 of these I have on the way RP2040-CORE-A Looks to be a quick and easy way to have two or more RP2040 in a prototype design. Quazee137 side note my very old network printer died and all I find under the $250 range has WiFi and I live near a collage and my neighbors WFied printers get spammed all the time. Something I didn't know could happen. I don't need a printer to have WiFi, only ethernet port. Here google has not been my friend I search "all-in-one printer with ethernet port" and get a ton of WiFi printers. Know of any good ethernet only printers under $250? Edited 2024-07-17 16:03 by Quazee137 |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4223 |
My printer has WIFI, and in the setup menu you can simply turn it off. Volhout PicomiteVGA PETSCII ROBOTS |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6781 |
Have a look at the Brother models. I have one of their small LED colour printers and I can't imagine ever going back to inkjet now. It's way cheaper to run. You can switch it off when it's not needed and comes up in a minute or so when you switch it on. It can be connected using USB, Ethernet or WLAN (they also do versions without the WLAN). Brother also provide fully functional software for Linux, not just Windows. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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