Making the board
I decided on making a board for my final project wich will be a Nerf gun turret mount with IR sensors and servos to move it to its target.
For that project i needed a control board for thise functions so i had to splice togeather two boards one for the IR sensors and annother
for the servo motros so i used thise boards as referance for it
Servo
and Motion.
Assembeld the parts in the schematic and then reuted the board so it would be reddy to be milled out the next day but i ran in to a problem of the files compleatly
dissapering form my computer after it froze, ive not found out any couse to why they were gone but i had repeatedly saved them. so i had to desing it again working from
my screenshots.
first board that got lost
second board
The BOM
- 1 ATtiny 44
- 2 six pin hedders
- 1 four pin hedder
- 1 20 MHz resinator
- 5 0k resistors (I had 6 but that was becouse i forgot to remove a now useless one can just be copper trace now)
- 1 5.0 Regulator
- 1 10k resistor
- 1 22uF capasitor ( u used a 10uF becouse we did not have 22uF )
- 1 1uF capasitor
- 3 three male pins
Pin Map
- pin 1 VCC
- Pin 2 PB0 Resinator
- Pin 3 PB1 Resinator
- Pin 4 PB3 Reset
- Pin 5 PB2 IR 1
- Pin 6 PA7 IR 2
- Pin 6 PA6 IR 3 / Extra , MOSI
- Pin 14 GND Ground
- Pin 13 PA0 Servo 1
- Pin 12 PA1 Servo 2
- Pin 11 PA2 Servo 3
- Pin 10 PA3 Servo 4
- pin 9 PA4 SIK
- Pin 8 PA5 MISO
My board and schematic
Testing the board
ive only tested the servo part with the hardware PWM code and yet to combine and test with the sensors but ill do that when they are asembeld in the final project
The board worked like it should and worked well as the command board for the NERF Turret. as is documented in Week 19
and most of the probmlems and tinkering more with the board came in that week. but the main probelm with the board was that the early version of it I had placed the reglulator the wrong way round
so that the servos were not getting enogh power to them but that was fixed by ripping up routs and soldering on wires to the correct path.