Node Spacedeur

PoE powered Node on Ethernet voor de deur van de space zelf.

SpaceDeur node

"Motherboard" with POESP en all ext. components connected

Electronics

Todo: Add schematic / POESP pinout NB: currently POESP v1.1 is used, as the USB/UART and Eth ICs are heating much less in this version. Schematics above is for v1.0 (any major differences?)

On the motherboard there are:

• resistor between "Set V++" and GND, setting the voltage output for the stepper motor ("Vmot" terminal of A4988) to 12V
• transistor for amplifying the pulses on GPIO16 for the buzzer
• pull-up resistor for MS1, ensuring the motor is making half-steps (?)
• R-C circuit for the a.k.a. "Grote Schakelaar"
• socket for A4988-type stepper motor driver
• header for the POESP board
• 8-pin RFID reader connector (brown/red pin is rightmost)
• 4-screw terminal for the stepper motor
• 2-screw terminal for powering auxillary devices (not connected)
• 2-pin terminal for the buzzer, which sounds when RFID is read successfully
• 2-pin terminal for the a.k.a. "Grote Schakelaar". High when switch is off (or wire broken). Goes low when the switch is on.

The pinning on the RFID reader is (most probably):

pin	function
1	SDA
2	SCK
3	MOSI
4	MISO
5	IRQ
6	GND
7	RESET
8	3v3

Software: https://github.com/MakerSpaceLeiden/AccesSystem/blob/master/lib-arduino/ACNode/examples/SpaceDeur/SpaceDeur.ino

Pinning ESP32

ESP GPIO	functie
2	Stepper DIR
4	Stepper Enable
5	Stepper STEP
16	Buzzer
34	Grote Schakelaar
13	MOSI
12	MISO
14	SCK
15	SDA
32	RESET (optioneel)
33	IRQ (optioneel)

Stepper schroef terminal

see labels on each wire, match with those on terminals

Pin	functie
1	A - kleur onbekend
2	iA - kleur onbekend
3	B - kleur onbekend
4	iB - kleur onbekend

Grote Schakelaar header

Pin	functie
1	Deur sensor; pulled up; naar pin 34 van de ESP 32
2	Digital ground

2-screw terminal

Pin	functie
1	12Volt
2	power ground