DIY Canon Power Winder A
DIY Canon Power Winder A for Canon Ax-1 series.
Be aware motor rotation!!! Check this before connecting to camera.
Hardware needed:
- 18350 cell (I used 8A discharge VariCore VC-18390 18350)
- TP4056 charger module with protection (charge current set to 400mA, don't use protection)
- IRLZ44N mosfet
- Motor 1218-050 geared single shaft (27 RPM at 12V) (https://aliexpress.com/item/1005007447997805.html)
- TPS61088 module set to 12V (https://aliexpress.com/item/1005006072690195.html)
- SR240 Schottky diode (across motor to protect mosfet)
- 100uF ceramic capacitor across motor as noise filter
- 1/4" camera screw long (cut to around 28mm) (longest one you need to cut it anyway: https://aliexpress.com/item/1005007981321616.html)
- 2x pogo pin: diameter 1.5mm, 2mm spring leap, 7mm body heigh (7mm variant here: https://aliexpress.com/item/1005010237469282.html)
- 3mm SS12D00 slide switch (aliexpress.com/item/1005005633418066.html)
- 100kR resistor
- 47R / 50R resistor
- Aluminum pipe (10mm outside diameter, ~7.5 inside diameter)
- Screws: 5x M3x8mm, 1x M3x15mm
- Spring 17mm length, 5.5mm outside diameter, 4.5 inside diameter
- Some wires, soldering iron
Schematics:
[BATTERY +] ------ [TP4056 charger BAT +]
[BATTERY -] ------ [TP4056 charger BAT -]
[BATTERY +] ------ SS12D00 switch ON/OFF -------- [TPS61088 VIN]
[TPS61088 VOUT] ------ [MOTOR +]
[TPS61088 VOUT] ------ [POGO PIN 1] (doesn't matter which one)
[GND] ------ [TPS61088 GND IN]
[BATTERY -] ------ [IRLZ44N SOURCE]
[IRLZ44N DRAIN] ------ [MOTOR -]
[IRLZ44N GATE] ------ [100kR] ------ [BATTERY -]
[IRLZ44N GATE] ------ [47R / 50R] ------ [POGO PIN 2]
[SR240 -] ------ [IRLZ44N DRAIN]
[SR240 +] ------ [IRLZ44N SOURCE]
To create shaft coupler from motor to camera you have to cut aluminum pipe (outside diameter 10mm, inside diameter ~7.5mm).
Cut 9mm of pipe and using file/dremel create coupler as presented on screenshot. Glue inside "pipe_insert.stl" with some strong glue.
Instead of printing "pin". You can use M3 screw thread cut to 3mm. Glue this thread into body pin hole. Use file to shrink the diameter as the hole in camera body inside is around ~2.5mm.
There are 2 variants of bottom "plates" the flush one and bulky one. Bulky one make the camera more stable on shelf with standard 50mm lens.