# RV3028 BreakoutRTC - Pico 2W + Breakout Garden - device not recognised **URL:** \ **Category:** Support\ **Created:** [August 5, 2026, 9:55am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034 "2026-08-05T09:55:58Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![Vortrax](https://avatars.discourse-cdn.com/v4/letter/v/54ee81/32.png) [@Vortrax](https://forums.pimoroni.com/u/Vortrax)\ **Post date:** [August 5, 2026, 9:55am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/1 "2026-08-05T09:55:58Z")
**Problem** : RV3028 RTC Breakout not recognised in Breakout Garden (BG) with Pico 2W and latest standard Pimoroni firmware. All new components purchased August 2026. **Checks** : RV3028 shows up in an i2c.scan() at address 0x52 (82). AI generated test code works with the RV3028; module tested in other BG I2C slots and on another BG, none work. **Search** : an internet search suggested that the Pimoroni BreakoutRTC module may be supporting an earlier version of the RTC chip on a different I2C address **Question** : Has any one else encountered the same problem, and is there a Pimoroni fix? ---
**Author:** ![MikeB\_50](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@MikeB\_50](https://forums.pimoroni.com/u/MikeB_50)\ **Post date:** [August 5, 2026, 10:43am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/2 "2026-08-05T10:43:56Z")
Yes, I purchased two RV3028 RTC Breakout boards in the birthday sale and both of them show up in an i2c scan at address 0x52, but neither of them is found when I try to initialise them using the Micropython version of set\_time.py. I also have some older RV3028 breakout boards which work fine on the same i2c address. I sent an enquiry to Pimoroni Support yesterday and received an acknowledgement, but no further response yet. ---
**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\ **Post date:** [August 5, 2026, 11:08am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/3 "2026-08-05T11:08:02Z")
I have an older RV3028 plugged into a Pico Breakout Garden **Base**. ```auto import machine sda=machine.Pin(4) #20 Explorer 4 Breakout scl=machine.Pin(5) #21 Explorer 5 Breakout i2c=machine.I2C(0,sda=sda, scl=scl, freq=400000) print('Scan i2c bus...') devices = i2c.scan() if len(devices) == 0: print("No i2c device !") else: print('i2c devices found:',len(devices)) for device in devices: print("Decimal address: ",device," | Hex address: ",hex(device)) ``` gets me ```auto MPY: soft reboot Scan i2c bus... i2c devices found: 1 Decimal address: 82 | Hex address: 0x52 ``` And ```auto # This example grabs the time/date from your Pico's RTC and uses it to set the time on your RV3028 RTC breakout # Your Pico/RP2040 board will only know the correct time if you're running this script through Thonny! from pimoroni_i2c import PimoroniI2C from breakout_rtc import BreakoutRTC import machine PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5} # i2c pins 4, 5 for Breakout Garden PINS_PICO_EXPLORER = {"sda": 20, "scl": 21} # Default i2c pins for Pico Explorer rtcpico = machine.RTC() i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN) rtcbreakout = BreakoutRTC(i2c) # this sets up the battery switching mode on your breakout rtcbreakout.setup() print(f"Getting time from Pico RTC/Thonny: {rtcpico.datetime()}") year, month, day, weekday, hour, minute, second, microsecond = rtcpico.datetime() print("Setting the breakout RTC!") rtcbreakout.set_time(second, minute, hour, weekday, day, month, year) print(f"New breakout time: {rtcbreakout.string_date()} {rtcbreakout.string_time()}") ``` gets me ```auto MPY: soft reboot Getting time from Pico RTC/Thonny: (2026, 8, 5, 2, 8, 3, 41, 0) Setting the breakout RTC! New breakout time: 05/08/2026 08:03:41 ``` My Pico 2W was flashed with Pimoroni’s rpi\_pico2\_w-v1.26.1-micropython.uf2 The current set time file is looking for address 52. My set time is using i2c = PimoroniI2C(\*\*PINS\_BREAKOUT\_GARDEN) I’d double check that your’s is too. ---
**Author:** ![hel](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/hel/32/6075_2.png) [@hel](https://forums.pimoroni.com/u/hel)\ **Post date:** [August 5, 2026, 11:54am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/4 "2026-08-05T11:54:09Z")
I’ve just tried a new board and I’m getting the same - will do some digging! If you have an affected board and still have the packaging please could you let me know the batch number? Close up photos of the board might be helpful too. ---
**Author:** ![MikeB\_50](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@MikeB\_50](https://forums.pimoroni.com/u/MikeB_50)\ **Post date:** [August 5, 2026, 12:04pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/5 "2026-08-05T12:04:42Z")
Thanks, Hel. I’m not sure which the batch number is, but there is a barcode that says 0-606034-879188 and little round labels that say 892 on one and 893 on the other. ---
**Author:** ![hel](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/hel/32/6075_2.png) [@hel](https://forums.pimoroni.com/u/hel)\ **Post date:** [August 5, 2026, 12:10pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/6 "2026-08-05T12:10:53Z")
Round labels are the batch ones, thanks! ---
**Author:** ![MikeB\_50](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@MikeB\_50](https://forums.pimoroni.com/u/MikeB_50)\ **Post date:** [August 5, 2026, 12:43pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/7 "2026-08-05T12:43:47Z")
I’m having trouble getting photos off my camera, and my phone camera is not good enough, but the numbers on the 3028 chip are: M609C4 3028 in case that helps. ---
**Author:** ![hel](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/hel/32/6075_2.png) [@hel](https://forums.pimoroni.com/u/hel)\ **Post date:** [August 5, 2026, 4:45pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/8 "2026-08-05T16:45:56Z")
Thanks! I think I’ve figured it out - it’s a problem specific to our C++/MicroPython driver so didn’t show up on our tests as production test breakouts using big Raspberry Pis. Turns out newer RV3028 chips have a different hardware identification number (0x44 instead of 0x33) so we’ll need to update the driver to accommodate this. I created an issue here if you want to follow it: [RV3028: `BreakoutRTC: breakout not found when initialising` · Issue #1135 · pimoroni/pimoroni-pico · GitHub](https://github.com/pimoroni/pimoroni-pico/issues/1135) and some fixed builds here (just RP2040 boards at the moment): [rv3028: add new chip ID/version · pimoroni/pimoroni-pico@73bfb7f · GitHub](https://github.com/pimoroni/pimoroni-pico/actions/runs/31024951781) ---
**Author:** ![Vortrax](https://avatars.discourse-cdn.com/v4/letter/v/54ee81/32.png) [@Vortrax](https://forums.pimoroni.com/u/Vortrax)\ **Post date:** [August 5, 2026, 5:46pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/9 "2026-08-05T17:46:39Z")
My ‘faulty’ unit is batch number 893, purchased 3/8/26 ---
**Author:** ![MikeB\_50](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@MikeB\_50](https://forums.pimoroni.com/u/MikeB_50)\ **Post date:** [August 5, 2026, 9:54pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/10 "2026-08-05T21:54:06Z")
Excellent, thanks very much, Hel. I will be waiting for the Pico Plus 2W driver. Can you let us know how to install the driver when it becomes available, please. ---
**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\ **Post date:** [August 6, 2026, 10:30am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/11 "2026-08-06T10:30:47Z")
> [@MikeB\_50](#): > > Can you let us know how to install the driver when it becomes available, please. It will be included in a new uf2 file that you flash to your Pico 2W. And it will likely show up here. > **[Workflow runs · pimoroni/pimoroni-pico-rp2350](https://github.com/pimoroni/pimoroni-pico-rp2350/actions)** > > MicroPython builds for Pimoroni Pico 2 / RP2350 boards. - Workflow runs · pimoroni/pimoroni-pico-rp2350 ---
**Author:** ![hel](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/hel/32/6075_2.png) [@hel](https://forums.pimoroni.com/u/hel)\ **Post date:** [August 12, 2026, 11:39am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/12 "2026-08-12T11:39:00Z")
I think team software are hoping for an updated version of MicroPython to drop before they do a new release, but you should now be able to download a pre-release RP2350 build with the RV3028 fix in from [here](https://github.com/pimoroni/pimoroni-pico-rp2350/actions/runs/31590122160). (I think you’ll need to be logged in with a Github account to see the download links). ---
**Author:** ![MikeB\_50](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@MikeB\_50](https://forums.pimoroni.com/u/MikeB_50)\ **Post date:** [August 12, 2026, 12:42pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/13 "2026-08-12T12:42:29Z")
Thanks very much @hel and @alphanumeric. I’ll give the new version a try shortly. I worked around my original problem by downloading the new 2040 picow uf2, once I realised I had to be logged in to Github before I could see it, and flashed it on to an old I75W. Then I swapped an old RV3028 from the I75W with a new one, and it worked fine. ---
**Author:** ![hel](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/hel/32/6075_2.png) [@hel](https://forums.pimoroni.com/u/hel)\ **Post date:** [August 12, 2026, 1:00pm UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/14 "2026-08-12T13:00:26Z")
Oops, tagging @Vortrax as well - apologies, I’d missed it was your post originally! Fixed RP2040 builds are available [here](https://github.com/pimoroni/pimoroni-pico/actions/runs/31589801717) and RP2350 builds [here](https://github.com/pimoroni/pimoroni-pico-rp2350/actions/runs/31590122160). ---
**Author:** ![Vortrax](https://avatars.discourse-cdn.com/v4/letter/v/54ee81/32.png) [@Vortrax](https://forums.pimoroni.com/u/Vortrax)\ **Post date:** [August 16, 2026, 9:35am UTC](https://forums.pimoroni.com/t/rv3028-breakoutrtc-pico-2w-breakout-garden-device-not-recognised/29034/15 "2026-08-16T09:35:32Z")
@hel Thanks for the quick fix, my RV3028 is working fine now. I also hadn’t realised that i needed to log in to my GitHub account to download the updated firmware.