Control Electronics

Assembly

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Main PCB coordinating paper position, hammer timing, and solenoid power delivery via an 8-channel darlington driver array.

Direct parts	7
Total parts	10
Used in	1 assembly
Class	Assembly

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Main PCB coordinating paper position, hammer timing, and solenoid power delivery via an 8-channel darlington driver array. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Control Electronics parts and their functions

7 top-level parts · 10 parts in total · full bill of materials below

Control Electronics parts diagram: 1 microcontroller, 2 solenoid driver array, 3 USB connector, 4 power distribution relay, 5 bare PCB, 6 SMD passive (R/C/L), 7 relay. 10 parts in 7 top-level items. — Control Electronics parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Microcontroller	1×	ATmega328P or similar, running embosser firmware
2	Solenoid Driver Array	1×	ULN2803A or TIP120 array driving 8 solenoids in parallel
3	USB Connector	1×	USB-B or USB-C for receiving documents from host
4	Power Distribution Relay	1×	Solid-state relay switching solenoid coil string on/off
5	Bare PCB	1×	2-layer PCB for motor and USB control
6	SMD Passive (R/C/L)	1×	Filtering caps, pull-up resistors, diodes across solenoid coils
7	Relay	4×	SPDT relay banks for mode switching and fault isolation

3D model

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Build & assembly graph

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Bill of materials for Control Electronics

7 top-level lines · 7 rows shown · 10 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Microcontroller	braille-embosser-mcu	1×	1	·	part
2	Solenoid Driver Array	braille-embosser-solenoid-driver	1×	1	·	part
3	USB Connector	braille-embosser-usb-connector	1×	1	·	part
4	Power Distribution Relay	braille-embosser-power-distribution	1×	1	·	part
5	Bare PCB	pcb-bare	1×	1	·	part
6	SMD Passive (R/C/L)	smd-passives	1×	1	·	part
7	Relay	relay	4×	4	·	part

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Where the control electronics is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Computing & Peripherals 1 Braille Embosser

Used in 1 assembly

Braille Embosser

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks