update hw motors

azimut · azimut · commit 82ad6c75e4bb · 2025-06-17T08:24:07.000-03:00
diff --git a/hardware/analog/components/active/7-segment-display.org b/hardware/analog/components/active/7-segment-display.org
@@ -1,13 +1,31 @@
 - https://en.wikipedia.org/wiki/Seven-segment_display
-  - 1903 (1970 Leds)
-  - Multiple digit ones need to use multiplexing
-    by alternating power between each digit.
+- 1903 (1970 Leds)
+- You need an extra resistor for each pin.
+- Types
+  - common cathode (more common)
+  - common anode
+
+*  1 digit
 
 #+CAPTION: in DIP-10 form + segment names
 #+ATTR_ORG: :width 150
 [[https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Seven_segment_01_Pengo.jpg/485px-Seven_segment_01_Pengo.jpg]] [[https://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/7_Segment_Display_with_Labeled_Segments.svg/225px-7_Segment_Display_with_Labeled_Segments.svg.png]]
 
-- multiple digit:
-  - 7 pins for each segment
-  - 1 pin for each digit, connecting all the cathodes of each segment of a digit
-  - you select the digit, draw, clear, move to next digit
+- 10 pins
+- common 1 digit pinout
+  #+CAPTION: DP=decimalpoint  COM=common
+  #+begin_src
+  G F COM A B
+
+  E D COM C DP
+  #+end_src
+
+* >1 digit
+
+- Multiplexed (aka alternating power between each digit)
+  - 7 pins for the segments
+  - 1 extra pin *for each* digit, to select them
+
+* matrix
+
+- https://www.circuitspecialists.com/blog/build-8x8-led-matrix/
diff --git a/hardware/analog/components/active/motor/brushed.org b/hardware/analog/components/active/motor/brushed.org
@@ -0,0 +1,3 @@
+- https://en.wikipedia.org/wiki/DC_motor
+- https://en.wikipedia.org/wiki/Brushed_DC_electric_motor
+- 1827
diff --git a/hardware/analog/components/active/motor/brushless.org b/hardware/analog/components/active/motor/brushless.org
@@ -3,3 +3,5 @@
 - synchronous
 - DC
 - intended for continuos rotation
+- 3/4 wires
+- have to be driven by a ESC (Electronic Speed Controller)
diff --git a/hardware/analog/components/active/motor/ics.org b/hardware/analog/components/active/motor/ics.org
@@ -10,6 +10,8 @@
   - h-bridge, for bipolar driver
     - example arduino https://www.instructables.com/H-Bridge-Motor-Driver-for-Arduino-Using-Transistor/
 
+- ULN2003 - "High voltage and high current darlington transistor array"
+  - Can work for unipolar stepper motors
 - DM542T
   - up to 128 microsteps
 - L297 - "Stepper Motor Controller"
@@ -26,6 +28,7 @@
   - configurable to work on 1/2/4/8/16 step modes (through MS1/MS2/MS3 pins)
   - NO phase sequence tables
 - SN754410 - Quadruple Half-H Driver
+- L298N
 - L293D - Quadruple Half-H Driver
 - SMA7023M* - "2-Phase Stepper Motor Unipolar Driver"
   - 10v-44v - Control Supply Voltage - Vs
diff --git a/hardware/analog/components/active/motor/stepper.org b/hardware/analog/components/active/motor/stepper.org
@@ -1,25 +1,38 @@
 - https://learn.adafruit.com/all-about-stepper-motors/what-is-a-stepper-motor
 - https://en.wikipedia.org/wiki/Stepper_motor
-  - brushless DC electric motor
-  - given a step position
-  - don't need a position sensor for feedback
-
-- Wirings types: 4,5,6 cables
-  - 4 for each side of winding
-  - 5/6 for common
-
-- Driving types: unipolar, bipolar
-  - unipolar needs at least 5 cables
+- brushless DC electric motor
+- given a step position
+- don't need a position sensor for feedback
+
+- Driving types:
+  - bipolar (4 cables)
+    - +torque
+    - -maxspeed
+    - voltage polarity reversal
+  - unipolar (5,6 cables)
+    - -torque
+    - +maxspeed
+    - no voltage polarity reversal
+    - needs at least 5 cables
+    - 1 extra for a tap to the center of a pair of coils
+
+- Shafts: round, D, geared, lead-screw
 
 - Drivers:
   - L/R (aka constant voltage)
   - Chopper
 
+- Inductance:
+  - in millihenries
+  - higher means less maxspeed
+
 - Microstepping:
   - affects max velocity
 
 * hardware
 
+- 28YBJ-48 - Unipolar 5v, 32 steps, 248 steps with (64) gear reduction
+
 - NEMA - National Electrical Manufacturers Association
   - a standard for having same..., on different brands:
     - shape: front step size, N/10 in inches
diff --git a/hardware/analog/components/active/speaker.org b/hardware/analog/components/active/speaker.org
@@ -0,0 +1,3 @@
+- https://simple.wikipedia.org/wiki/IP_code
+- Ingress Protection Code
+- measures the level of protection given by the enclosure
diff --git a/hardware/circuits.org b/hardware/circuits.org
@@ -3,12 +3,17 @@
   - SMT https://en.wikipedia.org/wiki/Surface-mount_technology
   - FreeForm https://en.wikipedia.org/wiki/Point-to-point_construction
     - aka dead-bug, air wire, point to point soldered circuit
-    - brass bars
+    - bars: 0.8mm or 0.5mm, 18AWG or 20AWG
+      - YES: brass, copper, music wire, templated steel, brazing rods, silver coated steel
+      - NO: stainless steel, alluminum
     - https://hackaday.com/tag/circuit-sculpture/
     - video howto https://www.youtube.com/watch?v=UV9_SqKqZQ8
+    - project: clock+temperature (mcu+clock) https://www.youtube.com/watch?v=hNpcRpxVWbk
+    - [[https://www.youtube.com/watch?v=gEs6vb6mWzY][Wire Modeling and Soldering Basics for Designers Architects hobbyists & crafters]]
     - artist: Peter Vogel
     - artist: Eirik Brandalf [[https://eirikbrandal.com/][home]] [[https://www.youtube.com/@EirikBrandalf][youtube]]
     - artist: Mohit Bhoite [[https://www.youtube.com/user/mohitbhoite][youtube]]
+      - [[https://www.youtube.com/watch?v=p5GvcxMcR74][Circuit Sculptures Workshop]] by Jiří Praus, Kelly Heaton & Mohit Bhoite
       - [[https://www.youtube.com/watch?v=LqVFxNFGNbc][Building Free-Formed Circuit Sculptures]]
 
 - PHDL (vhdl extension) https://sourceforge.net/p/phdl/wiki/Home/
@@ -79,6 +84,7 @@
 
 - gEDA
 - fritzing
+- https://www.freepcb.com/
 
 ** KiCad
 
diff --git a/hardware/digital/components/processing/cpu/32/esp8266.org b/hardware/digital/components/processing/cpu/32/esp8266.org
@@ -1,5 +1,6 @@
 - forum https://www.esp8266.com/index.php
 - wiki https://github.com/esp8266/esp8266-wiki/wiki
+- tuto https://web.archive.org/web/20161025042934/https://espressif.com/en/support/explore/get-started/esp8266/getting-started-guide
 - https://en.wikipedia.org/wiki/ESP8266
   - 2014
   - CPU:
@@ -13,13 +14,18 @@
   - 3.3v
 
 * Models
+
 - Adafruit Huzzah Feather
 - Adafruit Huzzah Breakout
 - NodeMCU
   - based on the ESP8266-12E
   - includes 4 Mbytes of Flash
+
 ** ESP-01
 
+- 5 more gpio pins not connected
+
+#+DESCRIPTION: CH_PD == EN
 #+CAPTION: pinout, from above-bottom
 #+begin_src
 GND GPIO2 GPIO0 RXD
diff --git a/hardware/ics/555/555.org b/hardware/ics/555/555.org
@@ -1,3 +1,4 @@
+https://hackaday.com/2019/03/25/the-worlds-fastest-555-timer-and-the-state-of-the-555/
 https://en.wikipedia.org/wiki/555_timer_IC
 
 1972
diff --git a/hardware/tools/cnc/self.org b/hardware/tools/cnc/self.org
@@ -90,6 +90,8 @@
 - controller
   - pcb http://flatcam.org/
   - pcb https://www.galaad.net/coppercam-eng.html
+  - pcb https://www.easylogix.de/products_detail.php?prog_id=1
+    - windows
   - https://en.wikipedia.org/wiki/LinuxCNC
   - https://winder.github.io/ugs_website/
   - https://grbl-controller.software.informer.com/

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+- https://en.wikipedia.org/wiki/DC_motor`
	`2`	`+- https://en.wikipedia.org/wiki/Brushed_DC_electric_motor`
	`3`	`+- 1827`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+- https://simple.wikipedia.org/wiki/IP_code`
	`2`	`+- Ingress Protection Code`
	`3`	`+- measures the level of protection given by the enclosure`
Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+https://hackaday.com/2019/03/25/the-worlds-fastest-555-timer-and-the-state-of-the-555/`
`1`	`2`	`https://en.wikipedia.org/wiki/555_timer_IC`
`2`	`3`
`3`	`4`	`1972`