What OS are you using? With windows I can do any of that

Sometimes just blow hard into the hole, or hit the table with it when the solder is liquid. I even used compressed air once to do it.

Ojo con el conector XH, ya que el modelo otiginal de JST tiene paso de 2.5mm, y eso puede dar lugar a encontrar copias de 2.5mm o 2.54mm. En 2 pins no se nota, 3 ya se ve raro, 4 o más no entran

Ahora se estrena una serie en Disney+ de un chaval de izquierdas que se hace colega de un torero y que se vende como "un canto a la tolerancia".

No quiero tolerancia, quiero quemar contenedores y que todos los nazis se mueran de repente.

To control rows and columns individually, you just need to wire output enable of the shift registers to uC. There would be also many other ways to do without shift registers like I2C GPIO expanders or multiplexers.

Really interesting sink driver as it includes freewheel diodes. I prefer MOSFETS, but that made me realize you only need one diode from each column to 19V rail, given that you power off first the column MOSFET, wait some ms for energy to dissipate, then power off row MOSFET.

Yes Hbridges normally include emf diodes. But I don't think this is a good application for you. You need double of upper half bridges than lower half bridges, you will end using one HBridge per row (and use only upper part) and one HBridge per each pair of columns. You need to make BOM and see cost

That's a good catch!. There are switching converters packaged in easy packages. Something like TR10S05 or equivalent, you need to be sure about the required current.

I think that you need to put diodes from each column "exit" to each row "input", so every time a inductor is "charged" has a diode to dissipate that energy. That's a diode for each inductor in the end.

Don't you have access to both sides of the inductor? Can't you include a diode in parallel with each one? Maybe taking a look at the actual schematic will help.

Without EMF diodes you may damage your MOSFETs due to Vds overvoltage. Maybe are they somehow already included?

Also it would be wise to use a pull down resistors on the bottom MOSFETs

Tambien útil para leer currículums

I've found it on 9.0, don't know when it was implemented

If you select two lines that make a corner, then right button shape modification

Last version has it integrated.

I would have used thicker lines given the space. Or at least teardrops, they strengthen the joint and do the PCB more durable if it has some physical stress.