Align objects diptrace11/9/2023 ![]() ![]() Here's my attempt using 2mm spaced holes. I wondered if using 2mm pitched pins would save space on a board and make it easier to make these sensor boards small. I've noticed much of the space of these boards is taken up by the various header pins. If the extra caps aren't needed, then the top of the board will be flat to make mounting the magnet hardware easier. I placed the non-essential capacitors on the top with the sensor. I included places for the caps and resistor recommended when using long wires with SPI communication. I included pins and jumpers to allow the chip to be used in any of its possible modes. There are other modes these chips can be used in that don't require cut wires. There's a second pair of jumpers for connection these pins. The chip also includes an interrupt pin and an enable interrupt pin that would also require alternating cut wires. A pair of jumpers would need to be set on each board to connect the MOSI and MISO pins to the appropriate wire. ![]() The wire cut would need to alternate from one board to the next. A 10-wire ribbon cable would allow many of these sensors to be easily daisy-chained together.īecause of the need for one boards MISO pin to be connected to the next board's MOSI pin, one of the wires on the 10-wire ribbon cable would need to be cut between each board. The pins not inside the center circle are there to make it easier to make connections with the board.Ī 2x5 header could be used to connect with a 10-wire ribbon cable. The center 1/2" circle could be cut out and it would have the same functionality as the larger board. ![]() I tried to see how many would fit on a 5cm x 5cm board that Itead Studio uses. I wondered if I could design a PCB with one of these sensors small enough to fit in the 1/2" spot left by the pot.įor my first attempt, I used the sensor in 3-wire, read only mode. One application I hope to use this chip for is as an encoder on continuous rotation servos.Ī lot of the servos I've converted have potentiometers 1/2" in diameter. The holes that aren't on either the far left or far right of the board are for jumpers used to configure the chip. The above board could be daisy-chained by having the incoming wires connect to the left side of the board and the outgoing connect to the right side. The above board can use any of the AS5055 communication modes including the 4-wire SPI daisy-chain mode. I think I still have another week or two before I'll receive it. I've got a little better with the silkscreen but I still can't turn off the patterns' silkscreen component (for example the box around a set of headers). I didn't submit the silkscreen layers because I couldn't get the silkscreen items to behave the way I wanted. ![]()
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