Morserino-32
The new way to practice Morse code.
The new M32 Pocket is here!
What is the Morserino-32?
It is a multi-functional Morse device (Keyer, Trainer, Decoder, even Transceiver etc.). It is ideal for learning and practicing Morse code, useful for everybody from beginner to high-speed pro.
To update your Firmware through your browser:
For M32 1st & 2nd edition: click here
For M32Pocket: click here
(You may now also select beta versions!)
Other update methods are documented in the user manual.
User Manual is here.
Here is a nice configuration tool for your M32
Requires firmware > 8.0 (beta) later than 2026040.
This is a stand-alone html/js utility that also works locally from you computer (it is also on GitHub, the file m32_pref_help.json contains the tool tip texts). You need Chrome or Edge and a USB connection to your M32.
Join the Morserino User Group!
You get information about common problems and how to solve them, as well as announcements of firmware updates. The group is managed by groups.io.
A really helpful and friendly community, highly recommended!
Join here:
Features of the Morserino-32 Pocket
The Morserino-32 is a multi-functional Morse code device for everyone from absolute beginners to high-speed operators. Three generations — the original kit, the 2nd edition, and the new M32 Pocket — share the same proven firmware, giving every user access to the full range of features.
Learn. The Koch Trainer introduces characters one at a time at full speed, following the proven Koch method. Choose from four established character sequences (M32/JLMC, LCWO, CW Academy, LICW Carousel), or define your own. The Adaptive Random mode automatically focuses on the characters you struggle with.
Practice. The CW Generator produces random groups, realistic callsigns, common CW abbreviations, English words, or plays your own uploaded text files — all with configurable Farnsworth and Wordsworth spacing. The Echo Trainer challenges you to copy and key back what you hear, with immediate feedback. Adaptive speed pushes you to your limit automatically.
Key. A full-featured iambic keyer (modes A, B, Ultimatic, Non-Squeeze) with built-in capacitive touch paddles, or connect your own external paddle or straight key. Eight programmable memories. Use it as a standalone practice oscillator or connect it to your transceiver.
Decode. The built-in CW decoder works from a straight key, the touch paddles, or audio input from a receiver — with adjustable bandwidth filtering.
Communicate. Talk to other Morserino users over WiFi (via your local network, across the Internet, or peer-to-peer using ESPNow without any infrastructure). Earlier editions also include a LoRa transceiver for direct communication on 433 MHz. Connect to online services like QSO bots, iCW, and VBand.
Play. The M32 Pocket introduces CW games that make practice fun. Morse Invaders challenges you to destroy falling characters by keying their Morse code — with difficulty that adapts to your Koch lesson and speed.
Extend. Open-source firmware, USB serial protocol for computer integration, Bluetooth keyboard output, and a growing ecosystem of third-party training software. Update firmware easily via WiFi, USB, or a web browser.
All documentation and software is in the Public Domain and can be downloaded from here:
"The Echo Trainer may well be my favourite feature of the Morserino. It has helped me get faster at decoding and sending morse code. [...] This mode has been the most helpful to me in improving my morse code."
— N2EC, Morserino-32 (Version 2) Review
"To me, the Echo mode is worth the full cost of the kit."
— Nuts & Volts Magazine, Learn to Send and Receive Morse Code with the Morserino-32
"I highly recommend you get your hands on one of these. In CW keyer mode it provides great feedback on your ability to key. If you screw up for example and pound out 4 dots instead of 3 for 'S', you get an H on the display. This immediate feedback is helpful when you are learning."
— N1CLC, My Tips for Learning Morse Code
"As an owner of a Morserino I highly recommend you buy and assemble one — it's a great tool and also functions as a very well implemented keyer you can use with any rig."
— QRPLabs forum user, groups.io discussion
"The capacitative paddles are surprisingly good and with a bit of practice you can send quite well with a very light touch."
— N2EC, Morserino-32 (Version 2) Review
"What's really great about it — as a keyer it translates what you send into text on the screen. If it's connected to a radio it would decode the Morse code coming into it."
— Brightleaf Amateur Radio Club, Morserino 32 Adventure
Morserino-32 Pocket FAQ
This FAQ is compiled from the official user manual and recent community discussions on groups.io.
1. Power Supply, Battery, and Charging
- What type of battery should I use?
- Use a 14500 Li-Ion (3.7V) cell. 14500 cells have the same form factor as common AA batteries, but we need 3.6-3.7 V cells, i.e. Li-Ion. The maximum size is a length of 52mm and a width of 14.5 mm.
- Recommendation: Use a protected cell (one with built-in protection against deep discharge) to prevent early battery death. Community members frequently recommend high-quality brands like Keeppower (800mAh) or XTar.
- Where can I buy a 14500 battery in the US?
- While not explicitly in the manual, community discussions suggest retailers like Amazon (brands such as JESSPOW) or specialized battery shops.
- Do I need a specific USB-C charger?
- No. Any normal 5V USB charger (like a standard phone charger) will work.
- The M32 Pocket consumes a maximum of 500 - 600 mA when charging the battery.
- How do I charge the battery?
- Connect the USB-C cable and ensure the Power Switch is in the ON (I) position. The battery will not charge if the hardware switch is OFF.
- Status Indication: As of firmware version 8, The M32 Pocket displays a battery/charging icon on the top line of the display whenever you are in a menu.
- Low Battery "Gotcha": If the battery voltage is dangerously low, an empty battery symbol will appear and the device will not boot. Symptoms like loss of audio during keying suggest that the battery voltage is too low and the battery needs recharging.
2. Cases and 3D Printing
- Where can I find 3D printing files?
- While the manual doesn't list URLs, community members point to Printables (e.g., Model 1550518 by Michael K Johnson/KZ4LY) for FreeCAD, STEP, and STL files for the M32 Pocket.
- How do I move the sensor pads to a new case?
- The touch paddles are capacitive and made from single-sided PCB material.
- Process: The PCB material is glued to the case - a bit of acetone can be used to weaken the glue so that you can carefully remove the PCBs from the original case and attach them to the new one. Be careful to reconnect the wires in the same way as they were with the old case.
- The "Missing" Red Button: On the M32 Pocket, the "red button" (FN button) is integrated into the case rather than being a separate protruding part. It is a cut-out in the case, located to the lower right of the rotary encoder.
3. External Keys and Connections
- Which jack do I use for external keys?
- Use the 3.5 mm 3-pole (TRS) jack labeled "External Paddle". It is the jack closest to the USB connector.
- Wiring Guide:
- Dual-Lever Paddle: Tip = Left, Ring = Right, Sleeve = Ground.
- Straight Key: Tip = Key, Sleeve = Ground.
- Configuration: To use a straight key or a bug in Echo Trainer or Transceiver modes, you must change the Keyer Mode preference to Straight Key.
4. Audio Input and Output
What is the pinout for the Audio I/O jack?
- The M32 Pocket uses a 3.5 mm 4-pole (TRRS) jack.
- M32 Pocket Pinout: Tip and 1st Ring = Audio/Headphones Out; 2nd Ring = Ground; Sleeve = Audio In.
- Note: This is different from the 1st/2nd edition Morserinos where the sleeve was audio out.
How to get an audio signal from a transceiver into the M32Pocket for CW decoding?
- First of all, you need a splitter audio jack Y Adapter Cable Stereo - 1x 3.5 mm Plug CTIA 4-Pin TRRS to 2x 3.5 mm Female.
- Plug in the 4-male plug into the M32/P headset socket and plug your headphones into the green socket of your splitter cable. Turn on your Receiver and tune in a good, clean CW station. Turn the volume down to very low! It is crucial not to override the M32/p input when decoding.
- Now connect your TRX output (for headphones or external speaker) with a 3,5mm cable to the pink female socket of the splitter cable. The TRX will silence now (of course).
- Set M32/p to decoder-mode. You will hear nothing in your headphone. WSte teh volume on the M32 1/3 approx.
- Slowly turn the TRX volume up. When M32/p detects a decodable audiosignal it will begin to work. With every detected dit or dah you will hear a beep. And simultaneously the M32Pocket will show a little black square in the upper left corner of the display (blinking).
- Be careful not to overload the input, as in that case decoding stops and no sound is sent to your headset.
How do I adjust audio input levels?
- Use the FN button to toggle between speed and volume control while a mode is active.
- For the M32 Pocket, a long press of the FN button in a menu keys the transmitter/sidetone, which can be used to set levels on connected external devices.
5. Bluetooth and VBand
- How to enable Bluetooth?
- Use the preference BLT Kbd Output.
- How do I connect to VBand?
- The Morserino can connect to VBand (hamradio.solutions/vband) via Bluetooth.
- Community tips suggest ensuring your browser supports the necessary protocols and setting the VBand input to "Straight Key" if your paddles aren't recognized correctly.
Bluetooth Keyboard: The M32 Pocket can act as a Bluetooth keyboard. Decoded characters are sent as if typed on a US QWERTY keyboard.
Can I use Bluetooth to stream audio?
- No, this is not possible. It would also not be useful, as Bluetooth audio introduces a noticeable delay, which makes correct keying very hard.
6. Firmware Updates
- What is the easiest update method?
- Webserial: Using Google Chrome or Microsoft Edge to visit
morserino.infois the easiest method as it requires no command-line tools or firmware downloads.
- Webserial: Using Google Chrome or Microsoft Edge to visit
Major "Gotchas":
Use the correct firmware flasher: On
morserino.infothere are links to two different instances of the firmware flasher, one for the older Morserino-.32 versions, and one for the M32 Pocket.Stay Awake: The M32 Pocket must be turned ON and must not be in sleep mode when connecting for an update.
Cable Quality: Ensure you use a data-capable USB cable, not just a "charging-only" cable.
What users say:
"The Echo mode is worth the full cost of the kit." — Nuts & Volts
"It has helped me get faster at decoding and sending." — N2EC
"I highly recommend you get your hands on one." — N1CLC
"A great tool and also a very well implemented keyer." — QRPLabs forum
