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Forum Index : Microcontroller and PC projects : rp2350 - any modules with SD ? / Moroni Tiny
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| zeitfest Guru  Joined: 31/07/2019 Location: AustraliaPosts: 482 |
Any 2350A modules with SD micro available ? There is/was adafruit rp2350 Metro (sometime) but it is now being rejigged to the B so that will delay things. I hope the Pico2 can be wired up for the SD. In the meantime the "Tiny" is more available, not many pins though. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6779 |
A Pico 2 can almost certainly work with a SD card. I must admit that I haven't tried it personally yet but I have no reason to suspect that it won't. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1113 |
The Pico 2 works fine with the SD Card, connected and set uo, like on a "normal" Pico. VGAVersion runs in the PicoGameBoard, ith the HDMI Firmware I used Peters Settings for SD Card. Cheers, Martin 'no comment |
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stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2120 |
I just soldered headers to pico2 and testing  I swapped usbvga 2040 with pico2 usbvga and it reads sd card reader. usb keyboard doesn't respond though. it has usb c and micro usb and 2040 had usb c but pico2 is micro.try different usb full size kb tomorrow. asteroids works as does bubble universe. just testing as requested :) |
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| al18 Senior Member  Joined: 06/07/2019 Location: United StatesPosts: 205 |
The Adafruit PiCowbell Adalogger ($7.95) was designed for the original Pico and looks like it may work with the Pico2 https://www.adafruit.com/product/5703 Pinout connections for this board are described here https://learn.adafruit.com/adafruit-picowbell-adalogger-for-pico/pinouts |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6779 |
If anyone wants one I'm sure I could do a board with a micro SD card socket that plugs into a breadboard adjacent to a Pico. It would be adjacent to pins 29 to 36 (GP22 to 3V3). It would pinch all the ADC pins and GP22 though, but there's nowhere else to get 3V3 from. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| zeitfest Guru Joined: 31/07/2019 Location: AustraliaPosts: 482 |
Thanks, that is good. ATM I have tried using SD with the Pimoroni Tiny 2350 but no luck so far, I think the power supply (small regulator + caps) isn't designed for driving the SD as it only has 1 uF capacitors, so I will try putting a heavier capacitor on the supply output and sd power pins and see if that helps. I have a sd card on a standard pico working ok so hopefully the pico 2 will just drop in once the software is sorted out (what could go wrong ?  ) The picowbell connections (i2c/sd) are a little different to the ones I was using, it should work with a bit of wrangling. The RTC looks like it is handled by most rtc libraries so that is good. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6779 |
I don't know about the Tiny, but the RP2040-Zero has driven SD cards reliably with no problem so it's probably not a regulator issue. I bet the one on the Zero is a nastier and cheaper version than the one on the Tiny. I know the RP2350 will drive a micro SD card as I've done it on a Pico 2. I was playing WAV files from one last night. With a micro SD card you wouldn't normally need a cap bigger than 1uF. I'm running it without one at all. I had to fit the series resistor because I'd left a space for it on the PCB so it wouldn't work without. :) Try not setting up System SPI. Use the four arguments for SDCARD. If you want the RTC (which also works on the Pico 2) you'll need System I2C. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| zeitfest Guru Joined: 31/07/2019 Location: AustraliaPosts: 482 |
"Tiny" RP2350 with SD micro hanging on. Not elegant but it works ok for a trial.  Took some time sorting out the SD !! It is running my interpreter programs from the card, driving I2C display etc so it is OK.[ not MMBasic ]  |
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