OSH Park
Profile for bwshockley
Shared projects
MINI_SAM_TQFP_1.27_SIMPLE_2016_12_12_001.brd
by
bwshockley.
4
layer board of
0.96x1.55
inches
(24.36x39.47
mm).
Shared on
December 12th, 2016 16:42.
This is a LEGO minifigure sized development board using an Atmel SAMD21E M0 chip. I basically followed the recommended layout/setup from the SAMD21 spec sheets.
R3 may or may not be needed during programming.
SDA/SCL lines have 4.7k pull-up resistors
Included a 3.5mm WS2812B LED for fun.
Latest version removes the 0.8mm 8 pin connector that I really wanted to use because of the very low profile. Instead I went to a 10-pin 1.27mm pitch SMT connector. Should be easy to find - they are the same as Cortex Programming/Debugging connectors. Makes for a high profile backpack for MINI SAM, but oh so much easier to solder.
More details on Github
MINI_SAM_TQFP_8-Pin_SIMPLE_2016_12_09_001.brd
by
bwshockley.
4
layer board of
0.96x1.55
inches
(24.36x39.47
mm).
Shared on
December 9th, 2016 20:41.
Details https://github.com/bwshockley/Minifigure-SAMD21E
MINI_Sam_2016_10_24_002.brd
by
bwshockley.
4
layer board of
0.96x1.55
inches
(24.38x39.47
mm).
Shared on
October 25th, 2016 21:56.
Minifigure SAMD21 Board
by
bwshockley.
4
layer board of
0.96x1.53
inches
(24.28x38.76
mm).
Shared on
October 6th, 2016 16:23.
Minifigure-SAMD21E
SAMD21E based Minifigure shaped development board.
Github
Sources files available on Github.
About
This circuit board was designed as a fun project for a SAMD21E microcontroller based development board. The circuit design follows the recommended design from the SAMD Datasheet - including section 39. Schematic Checklist. The USB protection may be overkill, but it is complete. I made this just for fun - I am not going to provide any special support, but always welcome recommendations, suggestions, and ideas for improvements. You are free to take it and run with it, but do not sell this design.
Etc
I have not yet tested the design. As it sits, it should pass DRC for OSHPark manufacture with two major unknowns. 1) Wether or not the cutouts for the hands will be manufactured as intended and 2) The exact outline of the board - there may be some corners, nooks, and crannies that are not manufactured by OSHPark and will require additional filing/work by me. I will update once I get a set manufactured.
BOM
The schematic has all items listed and values and should be easily sourced. Additionally, I have setup a project on mouser.com that can be found here. The BOM through mouser is roughly 12 USD at this time (Oct 2016). It does not include the WS8212B 3535 LED - these can be sourced from Adafruit or eBay among others. The LED does not need to be populated for the board to function, but it is fun.
Firmware
I plan on trying to implement both Arduino and possibly Micropython on this board, but need some significant help with this. I will update as I can.
License
For personal use only - do not sell. You may modify as you wish.
TouchPad Demo Board
by
bwshockley.
2
layer board of
1.86x2.14
inches
(47.27x54.43
mm).
Shared on
September 16th, 2016 14:47.
Simple demonstration board for various touch pad manufacturing techniques.
It should have four surface touch pads, and 7 side touch pads in two groups of 3 and 4. Group of 4 side touch pads are created with one technique, and the group of 3 side touch pads are created with another.
No real BOM. The top jumper can be a MOLEX 20 pin attached such that one row is on the top and the second row is on the bottom.
NOTE I have not tested this yet and am not 100% sure it will be manufactured correctly.
Additional information and source: Github