In my last post, I had the incorrect number for the encoder. The correct p/n is: PEC11R-4215K-S0024-ND The JST battery connector and short female headers can be ordered from Adafruit. Ken WB2ART

The encoder Bruce used is oot of stock at Digikey. I used this one: ROTARY ENCODER MECHANICAL 24PPR ‎PEC11R-4225F-S0024-ND‎ It works fine. Since I did not want to use knobs, this one has a fluted shaf

When I built the Pocket Tutor, I had never worked with mcu's, audio chips and speakers. So I have attached an annotated pcb just to assist if your confused on part orientation, like I was. Ken WB2ART

Hi guys. I finished the Pocket Tutor this morning. The Pocket Tutor software works great. I did make a change to the defaults. Changed the default code speed to 21, the default call to my call and use

I am wondering if anyone on the list ordered and received any pc boards for Bruce's pocket tutor and would be willing to share? Also has anyone found or made a 3D case for it? If so, are the 3D files

A few people have asked me how to configure Arduino IDE for the Blue Pill and other STM32 microcontrollers. I am not an Arduino expert, but here are some instructions for anyone interested: http://w8b

Hello Bruce Now I have picked up your new software for the ’old’ tutor. And it’s seems to Work fine. I can change colours and preselect the wanted exercise . Very nice. But I find that the screen upda

Hello Bruce You did it again! Nice work with the portable tutor and the documentation. Top class! I hope to get the new software implemented to my 'old' tutor, and need a hint for the display improvem

I have a few tips for anyone building the Pocket Tutor: 1. The power supply needs a decoupling capacitor across the battery. You should solder an additional 10uF cap across the pins of the battery jac

I added a few features to Pocket Tutor: - battery icon: displays current battery charge in bars & voltage - low battery warning that is audible and visual - adjustable screen brightness 10-100% - user

I posted a draft of part 4 (audio): http://w8bh.net/PocketTutor4.pdf - Bruce w8bh.net

Attached are photos of a Morse Tutor prototype I built. Some features: Handheld: 110 x 60 x 20 mm (roughly) Li-poly battery or USB powered, with built-in battery charger Larger 3.2" display. Built-in

Greetings, I received an email today announcing a USA division of RobotDyn. https://us.robotdyn.com/ I have purchased Mega2560 Pro Mini boards from RobotDyn in the past. They seem to be good little bo

I recently put together one of the very cheap ($15) toy digital oscilloscope products from JYE Tech, the DSO150, see https://jyetech.com/dso-150-shell-oscilloscope/ The main board comes fully assemble

Has anyone done the Blue Pill programming using Windows that has written up the procedures? I was trying to find the binaries as the group home page https://groups.io/g/w8bhMorseTutor and going to the

Here is an example of my latest approach to prototyping, a POC (proff of concept) breadboard with an Arduino Nano in an expansion board prewired to an I"C 16x2 LCD, a rotary encoder that can be switch

Here is short video of my STM32 W8BH Morse Tutor build using point to point wiring, unit is powered by a 5V mobile phone powerbank, speaker is recycled from a broken TomTom satnav. The initial build s

John, N6API, created nice 3D printed cases for the rectangular and square Morse Tutor PCBs. Thanks John! I've posted them on my github account at: https://github.com/bhall66/morse-tutor/tree/master/Ca

I'll send the STL files separately. In order to elevate the screen above the level of the STM, I added an extra header section as shown. The stand is from Thingiverse - I'll send the link in the next

(Sorry two queries in one day...) Building the stm32 version with the "long" 2a board for travel. Has anybody tried running a USB to barrel cable and powering it off your laptop? Spec says 500ma limit